What Expenses Are Deductible on Form 706? (w/Examples)+ FAQs

In 2024, only about 0.14% of U.S. estates paid any federal estate tax – but those few estates often saved millions by leveraging every available deduction. Form 706, the federal estate tax return, allows a wide range of deductible expenses to reduce the taxable estate. This means everything from funeral costs and debts to administrative fees and even major gifts to a spouse or charity can potentially slash the estate’s tax bill. Understanding exactly what expenses are deductible on Form 706 (and what aren’t) is crucial for effective estate planning and minimizing estate taxes.

💕 Unlimited Marital & Charitable Deductions: Transfers to a surviving spouse or qualified charity escape estate tax entirely, no matter the amount, thanks to the unlimited marital deduction and charitable deduction.
💳 Debts and Final Bills Reduce Taxable Estate: Mortgages, loans, credit cards, medical bills, and other legitimate debts owed at death are deductible, immediately lowering the estate’s taxable value.
⚖️ Admin & Funeral Costs Are Deductible (Choose Wisely): Necessary estate administration expenses (executor fees, legal/accounting costs) and funeral expenses can be written off on Form 706 – but some can instead be taken on an estate’s income tax return (Form 1041), so plan for the best tax benefit.
🌐 State Taxes and Nuances Matter: State estate or inheritance taxes paid can be deducted on the federal return, offering relief from double taxation. However, state laws also affect what’s considered an allowable claim or expense, so local nuances can impact your deductions.
🚫 Not Everything is Deductible: Bequests to individual heirs, routine property maintenance, and any expense already deducted elsewhere (or not truly an obligation) generally cannot be deducted on Form 706. Double-dipping or misjudging a deduction can lead to costly IRS challenges.

Estate Tax 101: From Gross Estate to Taxable Estate

To grasp Form 706 deductions, it helps to understand how an estate is taxed in the first place. When someone dies, their gross estate is the total fair market value of all they owned or controlled at death – including real estate, investments, bank accounts, business interests, life insurance they owned, retirement accounts, and even certain lifetime gifts. This gross estate can be a hefty number, but fortunately not all of it is taxable. After death, the law allows specific deductions to be subtracted from the gross estate, yielding the taxable estate, which is the portion actually subject to the federal estate tax (after accounting for any remaining tax-free exemption).

For example, suppose someone dies with a $15 million gross estate. If that estate pays $500,000 in debts and funeral costs and leaves $5 million to a surviving spouse, those amounts are deductible. The taxable estate would then be $15 million minus $500,000 minus $5 million = $9.5 million. In this way, deductions on Form 706 shrink the taxable estate that the IRS uses to compute the tax due.

At the federal level, each estate can also apply a high estate tax exemption (the unified credit) – for 2025, this exemption is $13.99 million – which means estates under that size owe no federal estate tax at all. If an estate’s taxable value exceeds the exemption, the excess is taxed at a top rate of 40%. Because the tax rate is so steep, every deductible expense on Form 706 can translate into substantial tax savings (each dollar deducted can save up to 40 cents in tax for a taxable estate). In other words, deductions are a vital tool in estate tax planning, ensuring that only the net value actually passing to heirs (after paying debts, expenses, or charity bequests) is taxed.

It’s worth noting a couple of legal terms. The adjusted taxable estate generally refers to the taxable estate after certain adjustments. Historically, this term was used in computing some credits (for example, it once meant the taxable estate minus $60,000 for the old state tax credit calculation). In modern practice, you may rarely encounter “adjusted taxable estate” outside of older references, but it essentially means the taxable estate after all deductions (and sometimes after adding back certain lifetime gifts to form the tax base). The main point is that identifying all allowable deductions is key to reducing the estate’s taxable amount as much as possible.

Now, let’s dive into the specific categories of expenses and transfers that are deductible on Form 706 – and how each works.

💑 Unlimited Marital Deduction: Tax-Free Transfers to Your Spouse

One of the most powerful deductions on Form 706 is the marital deduction. Under IRC §2056, any assets passing outright to a surviving spouse are completely deductible from the gross estate, effectively making those assets free from estate tax at the first spouse’s death. This is often called the unlimited marital deduction because there is no dollar limit – whether the spouse inherits $100,000 or $100 million, the entire amount qualifies as a deduction (as long as certain requirements are met).

How it works: Suppose a husband dies and leaves $8 million to his wife. That $8 million is included in his gross estate, but by listing it on Schedule M (Bequests to Surviving Spouse) of Form 706, the estate can deduct the full $8 million. If the marital deduction is the only significant deduction, the husband’s taxable estate could be reduced to nearly zero, meaning no federal estate tax would be due at his death. Essentially, the tax is deferred until the surviving spouse’s death (since the inherited assets will be part of her estate then).

Key requirements: The marital deduction is only available for transfers to a legal spouse of the decedent, and critically, the surviving spouse must be a U.S. citizen to get the unlimited deduction. If your spouse is not a U.S. citizen, special rules apply – you generally must leave assets to a qualified trust (a QDOT, or Qualified Domestic Trust) for the spouse’s benefit in order to still get a marital deduction. This rule prevents non-citizen spouses from taking assets abroad without U.S. estate taxation. With a QDOT, the estate can still deduct the transfer to the trust (deferring the estate tax), but there are requirements like having a U.S. trustee and possibly withholding tax on certain distributions.

Additionally, the property must pass outright or in a qualifying manner to the spouse. If you leave assets to your spouse with strings attached – for example, in a trust that ultimately passes to children (a terminable interest) – it normally wouldn’t qualify for the marital deduction. However, there is an exception: the QTIP election (Qualified Terminable Interest Property) allows a deduction for certain trusts that give the spouse income for life while meeting IRS requirements.

By electing QTIP on the estate tax return, the trust assets are treated as passing to the spouse (qualifying for the deduction now), but they will be taxed in the spouse’s estate later. Estate planners often use QTIP trusts to provide for a spouse while ensuring children inherit later, all while still securing the marital deduction at the first death.

What this means in practice: The marital deduction often allows wealthy couples to avoid any estate tax when the first spouse dies. For example, if a couple has $20 million and one dies leaving everything to the other, the entire $20 million can pass estate-tax-free using the marital deduction. The surviving spouse then potentially faces estate tax on what’s left at their own death, but they also have their own exemption to apply. This deferral is a huge tax-saver, giving the surviving spouse full use of the assets in the meantime; indeed, most estate plans ensure each spouse’s will or trust optimizes both the marital deduction and each spouse’s own exemption. In short, the marital deduction defers tax rather than eliminates it – the assets could be taxed in the second estate (unless further planning or exemptions apply) – but it’s an indispensable tool for married couples to delay or reduce estate taxes.

🕊️ Charitable Deduction: Leave It to Charity, Not the Taxman

Another deduction with no dollar limit is the charitable deduction. If the decedent leaves part of their estate to a qualified charitable organization, that amount can be deducted from the gross estate under IRC §2055. In essence, any portion of the estate that goes to charity is exempt from estate tax, much like transfers to a spouse are exempt.

Qualifying charities: The bequest must be made to an organization recognized by the IRS as a charitable, public, or religious entity that qualifies under the tax code. This includes 501(c)(3) charities, religious institutions, educational organizations, governments (for public purposes), and similar nonprofits. For example, leaving $1 million to the Red Cross or to a university endowment would qualify for the deduction. The donation can be outright or in trust, but if in trust, it must meet certain tests (for instance, a charitable remainder trust where the charity’s interest is irrevocable and satisfies IRS requirements) to ensure the charity’s portion is guaranteed.

Unlimited and powerful: Like the marital deduction, the charitable deduction is unlimited – whether you leave $10,000 or $100 million to charity, the estate can deduct the full amount. High-net-worth individuals often use this to reduce estate tax while supporting causes they care about. In fact, some estates are structured so that a large charitable bequest brings the taxable estate down to zero. For instance, if someone dies with a $30 million estate and leaves $20 million to various charities, that $20 million is fully deductible, and estate tax would only apply to the remaining $10 million (above the exemption), drastically cutting the tax bill.

Partial interests and trusts: It’s important that the charitable gift be a direct contribution or a qualified split-interest. Generally, no estate tax deduction is allowed for a charitable gift of a partial interest in property unless it’s structured as a special trust like a Charitable Remainder Trust (CRT) or Charitable Lead Trust (CLT) that meets strict IRS rules. For example, a CRT might give an heir income for life and then pay the remainder to charity – the estate can get a partial deduction (calculated by actuarial formula) for the charity’s portion, because the charity’s benefit is assured. The key is that the charity’s portion must be guaranteed. Outright charitable bequests or a fixed percentage to charity are simplest and fully deductible.

Why use the charitable deduction: Aside from the altruistic reasons, leaving money to charity means those funds won’t be taxed by the government. Essentially, you’re deciding that you’d rather a charity benefit than have 40% of that portion go to taxes – a win-win situation since the tax code incentivizes charitable giving. Many estates include charitable bequests precisely to take advantage of this; if the estate is large enough to be taxable, the deduction can save enormous tax dollars. For example, without the deduction, a $1 million gift to charity would cost the estate $400k in taxes, whereas with the deduction, that $1 million goes fully to the charity instead of to the IRS. In short, charitable giving is a key strategy in estate tax reduction for the charitably inclined, permanently removing those assets from taxation while supporting meaningful causes.

💳 Debts of the Decedent: Loans, Mortgages, and Bills You Can Deduct

When a person dies, any legitimate debts and obligations they owed at the time of death can generally be deducted on Form 706 as claims against the estate (under IRC §2053). The rationale is that the estate must pay these debts, so that portion of the estate isn’t really passing to heirs – it’s going to creditors. Thus, it shouldn’t be subject to estate tax. Deductible debts include a wide range of items, such as:

Mortgages and Liens: If the decedent owned real estate with a mortgage, the outstanding mortgage balance is deductible. For example, if a home valued at $500,000 had a $200,000 mortgage, the gross estate includes the full $500k value of the home, but the $200k debt can be deducted (usually on Schedule K of Form 706) as a mortgage or lien. The net effect is that only the equity ($300k) contributes to the taxable estate.
Loans and Notes: Any other personal loans, bank loans, auto loans, student loans, business loans, or promissory notes the decedent was obligated to pay can be deducted. The full unpaid balance at death can be listed as a claim against the estate.
Credit Card Bills and Personal Debt: Outstanding credit card balances or personal debts owed (including, say, a bona fide loan from a friend or family member) are deductible. Estates will typically pay off these balances during administration, and claiming them on the estate tax return reduces the taxable estate accordingly.
Unpaid Bills and Taxes: This category includes unpaid household bills (utilities, etc. as of the date of death) and any taxes assessed before death that remained unpaid (for example, property taxes that had accrued, or income taxes for any period prior to death). If the decedent died during the year and still owed some federal or state income taxes for that final year (or earlier years), those taxes due at death are debts deductible on Form 706. Similarly, any business expenses or liabilities the decedent incurred before death but hadn’t paid (such as an invoice for services rendered) would be claims against the estate.

In short, any enforceable obligation of the decedent reduces the estate, but the IRS requires that these debts be bona fide and legally enforceable. That means you can’t deduct a “debt” that’s really a disguised gift or not an actual liability. For example, if a parent left behind “IOUs” to their children that were not legitimate loans, or a family member claims the decedent “intended to pay me $50k” without documentation, those would not qualify. The debt deduction only applies to obligations that a creditor could legitimately pursue against the estate under state law.

Documentation and proof: When taking debt deductions, the executor should have records proving the debt (promissory notes, statements, etc.) and showing it was outstanding at death. If the estate later settles a debt for less than the full amount, only the amount actually paid is ultimately deductible. For instance, if the decedent owed $100,000 on a loan but the lender agrees to accept $80,000 from the estate in settlement, the allowable deduction would be $80,000 (because that’s what the estate actually paid to satisfy the claim). The IRS regulations emphasize that claims against the estate are deductible only to the extent of the amounts actually paid or expected to be paid out of estate funds.

Special notes: Some debts have unique treatment:

Medical Expenses from last illness: These are debts (hospital and doctor bills, for example) that can be deducted on Form 706. However, there’s a special choice: such expenses paid within one year of death can instead be claimed on the decedent’s final Form 1040 as a medical deduction, but you cannot double-dip. If the estate is taxable, using them on Form 706 can save about 40% in estate tax; if no estate tax is due, claiming them on the final 1040 might yield an income tax deduction (subject to AGI limits). Executors must elect on the final income tax return to take that route; otherwise, the expenses remain deductible on 706.
Taxes accrued before death: As noted, income taxes or property taxes that the decedent owed but hadn’t paid by the date of death are debts of the estate. These can actually be deducted on both the estate tax return and (for the final income taxes) on the estate’s income tax return as a deduction in respect of a decedent – a rare situation where an item can hit both forms without being considered a double deduction, because one is the decedent’s obligation and the other is the estate’s expense. The key point is that such taxes owed at death are valid deductions on Form 706 in the debts category.
Joint debts: If a debt was joint with someone else (e.g., a co-signed loan or a joint mortgage with a surviving co-borrower), typically only the decedent’s share of the debt is deductible. If the surviving co-borrower is expected to pay the rest, the estate should only deduct the portion it actually must pay. State law and the loan documents determine who owes what after death, but generally the estate can deduct only the portion of a joint debt that is charged to the estate.
Contingent or disputed debts: If a debt is disputed or not yet certain, the estate usually cannot deduct it upfront without resolution. For instance, if someone claims the decedent owed them money but the estate is contesting it, the IRS won’t allow a deduction until the claim is settled or adjudicated. In such cases, estates often file a protective claim for deduction (using Form 706 Schedule PC) to preserve the right to deduct it later once the amount is decided and paid.

Deducting debts ensures that the estate is taxed only on net wealth, not on amounts that must go to creditors. It’s important to be thorough in listing all valid debts on Form 706 – every mortgage, loan, credit card, and final bill – because each dollar deducted is a dollar less subject to the 40% tax. Always be prepared to substantiate each debt, and be cautious not to claim anything that isn’t a true obligation of the decedent.

⚖️ Claims Against the Estate: Settling and Deducting Liabilities

Beyond straightforward debts, an estate might face other claims that arise after death. These are also deductible on Form 706, provided they are enforceable and actually paid. Claims against the estate can include:

Lawsuits or legal claims for which the decedent or estate is liable. For example, if the decedent was in a pending lawsuit and after death the estate ends up paying a settlement or judgment, that amount is deductible. Suppose the decedent was being sued for $500,000 in a personal injury case; if the estate settles and pays $300,000, that $300,000 payment is a deductible claim.
Guaranteed or co-signed obligations that fall to the estate. If the decedent had guaranteed a loan or co-signed someone else’s debt, and the primary borrower defaults after death, the estate might have to pay. Such payments can be deducted as claims (again, only the amount actually paid).
Family or spousal claims under state law. Some states give a surviving spouse or minor children rights to a portion of the estate (such as an elective share or a family allowance for support) which are considered claims against the estate. If a surviving spouse exercises the right to an elective share beyond what the will provided, any extra amount the estate must pay to satisfy that right is often treated as a deductible claim. However, if the will’s bequest to the spouse was already covered by the marital deduction, then treating it as a claim is neither necessary nor allowed. This issue typically arises when a spouse waives certain inheritance rights and takes a settlement from the estate instead (e.g., in Estate of Kyle, a spouse’s legal claims were settled by giving her part of the estate, and courts scrutinized whether that was a deductible claim or a marital transfer).
Unfulfilled obligations of the decedent. For instance, if the decedent had entered a contract to purchase something or perform services and died before fulfilling it, the other party might have a claim for damages. Any such amount the estate must pay would be a deductible claim.
Late-filed or barred claims: State probate law sets a window for creditors to file claims. Only claims filed (or paid) within that process are enforceable. If a creditor misses the deadline, the estate likely won’t pay it (and thus can’t deduct it). From a deduction perspective, valid claims are typically those that are timely, allowed by state law, and ultimately paid.

The IRS is particularly cautious with large or unusual claims. Executors should keep solid evidence of a claim’s validity and payment. If a claim is contingent or not resolved by the time Form 706 is due (9 months after death, plus any extension), there are a couple of approaches:

Wait to deduct: You can delay taking the deduction until the claim is resolved. This might mean filing the estate tax return and paying the tax as if the claim won’t be paid, then later (when the estate actually pays the claim) filing for a refund of the overpaid tax.
Protective claim: File a protective deduction claim (Schedule PC) with Form 706. This alerts the IRS that the estate is aware of a potential liability and intends to deduct it once it becomes certain. Filing the protective claim keeps the statute of limitations open for that deduction. Once the claim is finalized and paid, the estate can supplement the return to claim the deduction and get a refund of the corresponding estate tax.

A real example: in Estate of Smith (a 1980s case), an estate deducted the full amount of a pending lawsuit claim before it was settled. The estate later settled for far less, and the IRS disallowed the excess deduction, insisting that only the paid amount was deductible. Today, IRS regulations codify this principle — you must “pay to deduct”. Estates can no longer deduct speculative or inflated claims; they should only deduct what will actually be paid (and use protective claims for anything uncertain).

In summary, claims against the estate operate much like debt deductions: they reduce the taxable estate because they represent obligations that diminish what can go to heirs. Properly handling claims may require legal guidance, especially when negotiating settlements, to minimize the payout while maximizing the deduction within the rules. Always ensure claims are legitimate – the IRS will not allow a friendly relative’s “claim” for uncontracted services, for example, unless there was a real legal obligation. But bona fide claims, once paid, provide valuable deductions on Form 706, trimming the estate tax to reflect only the wealth that truly passes on.

🏛️ Funeral and Administration Expenses: The Cost of Settling an Estate

Paying for someone’s final arrangements and wrapping up their affairs isn’t free – and fortunately, those funeral and administration expenses are deductible on Form 706. These costs fall under deductible administrative expenses in Section 2053. Here’s what counts and how to use these deductions wisely:

Funeral Expenses: A decedent’s funeral and burial costs are explicitly deductible on the estate tax return. This includes a range of funeral-related expenses:

Funeral home charges, embalming or cremation costs.
The cost of a burial plot or mausoleum, casket or urn.
Expenses for a memorial service ceremony.
The cost of a headstone, tombstone, or monument.
Transportation of the body and family for the funeral (e.g., hearse, and any family travel paid by the estate).
Amounts paid for perpetual care of a gravesite or cemetery plot.

For example, if the estate paid $15,000 in funeral home and burial expenses, that $15,000 is fully deductible on Schedule J of Form 706. Even the purchase of a burial plot or monument for the decedent is included as a funeral cost. One caveat: subtract any reimbursements or death benefits – the estate can only deduct the net expense after such offsets. If the decedent had, say, a $5,000 Veterans Affairs burial benefit or a $255 Social Security death benefit that went toward the funeral, the estate must reduce the deductible amount by those benefits.

It’s worth noting that funeral expenses are not deductible on any individual’s income tax return – only on the estate’s Form 706. Many people ask if they can personally deduct funeral costs they paid; the answer is no, since only the estate can potentially claim that deduction (and only if the estate files Form 706). In practice, if an estate is small enough not to require a Form 706, the funeral deduction exists in theory but provides no benefit because no estate tax return is filed. That’s why most families don’t encounter any tax deduction for funeral costs unless they’re dealing with a taxable estate.

Administration Expenses: These are the myriad costs of administering the estate – the expenses needed to collect the decedent’s assets, pay debts and taxes, and distribute property to heirs. Common administration expenses that are deductible include:

Executor’s Commissions: If the executor (or personal representative) charges a fee for their services (as allowed in many states, often based on a percentage of the estate or a reasonable hourly rate), that fee is deductible. For example, an executor’s commission of $50,000 on a sizable estate directly reduces the taxable estate. (If the executor is also a beneficiary and they waive the fee to save estate tax, then no deduction is taken since no fee was paid.)
Attorney’s Fees: Estates typically hire attorneys for probate and legal matters. All legal fees related to administering the estate – probating the will, handling estate tax filings, dealing with creditors or any litigation involving the estate – are deductible. For instance, $30,000 in legal fees paid by the estate would be fully deductible. (It’s wise to ensure these fees are itemized and solely related to estate matters, not personal services to beneficiaries.)
Accounting and Tax Prep Fees: If the estate hires CPAs or accountants to prepare the estate tax return (Form 706) and/or the estate’s income tax returns (Form 1041), those fees are deductible administrative expenses. Preparing the decedent’s final Form 1040 can also be considered part of estate administration. For example, if an accountant charges $5,000 to handle all the estate’s tax filings, that $5,000 is deductible.
Appraisal Fees: The estate often needs professional appraisals of property (real estate, jewelry, artwork, business interests) to establish accurate date-of-death values. Fees paid to appraisers are deductible. If the estate paid $2,000 for appraising the decedent’s home and collectibles, that $2,000 can be deducted.
Probate Court Fees and Costs: Filing fees paid to the court, the cost of publishing required notices to creditors, fees for certified copies of court documents, and similar probate costs are deductible administrative expenses.
Expenses to Manage or Preserve assets during administration: This might include insurance premiums the estate pays to keep property insured until distribution, storage fees for personal property, or maintenance costs necessary to preserve an asset’s value prior to sale or distribution. However, there’s a fine line: expenditures that improve or add value (e.g., renovating a house before sale) are usually not deductible as administration expenses because they’re not necessary for settling the estate – they benefit the heirs by increasing value. Routine maintenance (lawn care to prevent a property from deteriorating, security costs, minor repairs to prevent decay) can be considered necessary to preserve the estate and thus deductible. The IRS distinguishes “estate management” expenses (investment or maintenance costs) from “transmission” expenses (the costs of transferring assets to heirs); generally, both types can be deductible on 706 or on the estate’s income tax return, depending on how they’re handled.
Miscellaneous Costs: Other necessary expenses such as postage for mailing notices or distributions, shipping costs to deliver personal property to heirs (if paid by the estate), or even the costs of an estate sale or auction if the estate must sell property to raise funds, can be deductible. For example, if the estate hires a company to clean out and auction household items to generate cash to pay debts or taxes, those costs are arguably deductible as part of settling the estate.

Many administrative expenses are considered “elective deductions.” Simply put, certain admin costs can be claimed either on Form 706 (to reduce the estate’s taxable estate) or on Form 1041 (to reduce the estate’s taxable income), but not on both forms. This rule prevents double-dipping but gives the executor flexibility. For instance, executor fees, attorney and accounting fees, and similar expenses can go on one return or the other. How do you choose? If the estate’s total value exceeds the estate tax exemption (making it taxable), claiming those expenses on Form 706 can save estate tax at ~40%. If the estate is under the exemption (no federal estate tax due), a deduction on Form 706 provides no tax benefit – in that case, you’d prefer to deduct those expenses on Form 1041 to save on income tax. In short, use deductions where they have impact: on 706 for taxable estates, or on 1041 if the estate tax doesn’t apply but the estate has income.

To make this election, you must be careful not to double-claim. The estate tax return has a line to indicate if you are waiving the right to deduct certain expenses on the income tax side. Likewise, on Form 1041, you should attach a statement if you’re claiming expenses there that could have been on 706, affirming that they haven’t been (and won’t be) deducted for estate tax. Good communication between the preparers of Form 706 and Form 1041 is essential to avoid errors.

Here’s a quick comparison of the pros and cons of deducting expenses on Form 706 versus Form 1041:

Deduct on Form 706 (Estate Tax)	Deduct on Form 1041 (Estate Income Tax)
Pros: Reduces the taxable estate and estate tax if the estate is large enough to owe tax. Each dollar deducted on 706 saves up to 40¢ in estate tax. There are also no AGI-based limits to worry about on the estate tax return.	Pros: Best for estates that owe no estate tax – the deduction isn’t wasted. It can reduce the estate’s income tax on any earnings (interest, dividends, capital gains) during administration, potentially saving 10–37% in federal income tax (plus state income tax). This is valuable for estates with significant post-death income or long administrations.
Cons: If the estate is below the exemption (no estate tax due), using deductions on 706 produces no tax benefit. Also, once you use the expenses on 706, you forfeit using them on 1041 (so you might miss out on an income tax reduction).	Cons: For a taxable estate, using deductions on 1041 instead of 706 means you lose out on up to 40% estate tax savings in exchange for a smaller income tax benefit. Additionally, on Form 1041 some deductions may be subject to limitations (and if the estate has minimal income, the deductions might not be fully utilized).

In practice, taxable estates nearly always take all allowable admin expenses on Form 706, because reducing a 40% tax is priority. Non-taxable estates (those under the threshold, perhaps filing a Form 706 only for portability or state reasons) are better off using those deductions on the income tax return, where they can actually produce savings. And remember: never deduct the same expense on both forms. The executor should file the proper statements and maintain records to show which return is claiming each expense.

One subtle point – the marital deduction can be affected by where you deduct expenses. The marital deduction only covers what actually goes to the surviving spouse. If you pay large admin expenses out of assets that would have gone to the spouse, the net amount reaching the spouse (and thus the marital deduction) is reduced. If those expenses are deducted on Form 706, it all comes out in the wash (the taxable estate is reduced accordingly). But if you deduct them on Form 1041 instead, you haven’t reduced the taxable estate for those expenses – effectively the spouse’s share was lowered without a corresponding estate tax deduction, slightly shrinking the marital deduction. The calculation can get complicated, but the practical takeaway is: when estate tax is in play, it’s usually best to take deductions on Form 706 to maximize the marital deduction and overall tax efficiency.

🌐 State Estate Taxes and Other Tax Deductions: Don’t Overlook Them

The federal estate tax isn’t the only death-related tax to consider – many states impose their own estate or inheritance taxes. To prevent double taxation, the IRS allows a deduction on Form 706 for any state-level death taxes paid by the estate. This is the state death tax deduction (Part 2, line 3b of Form 706, under IRC §2058).

State estate vs. inheritance tax: Some states (e.g., Massachusetts, New York, Illinois) have an estate tax, which is charged against the overall estate (with its own exemption, often much lower than the federal). Other states (e.g., Pennsylvania, Kentucky, Iowa) have an inheritance tax, which is levied on the shares received by individual beneficiaries (rates often depend on the heir’s relationship to the decedent). Regardless of whether it’s called an estate, inheritance, legacy, or succession tax – if it’s a tax imposed by a state (or D.C.) because of the decedent’s death and based on the value of property, it qualifies for the federal deduction.

How the deduction works: Say an estate pays $100,000 in state estate tax to New York. On the federal Form 706, the estate can deduct that $100,000, thereby reducing the taxable estate. This isn’t a dollar-for-dollar credit against the tax, but it effectively saves up to 40% of that amount in federal estate tax (if the estate is taxable), softening the blow of the state tax. Important detail: you can claim the deduction even if the state tax isn’t paid by the time you file Form 706, as long as it’s paid within 4 years of filing (per Section 2058(b)). Often you’ll attach proof of payment later or estimate it on the return and adjust when actual figures are known.

Keep in mind that some estates might pay state tax even when no federal tax is due. For example, an estate of $5 million for a Massachusetts resident owes state estate tax (Mass exemption $1M) but owes nothing federally (federal exemption $13.99M). In such a case, the federal return (if filed for portability or other reasons) can list the state tax deduction, but since the estate owes no federal tax, the deduction doesn’t create a benefit (other than completeness). The deduction is most valuable when an estate straddles both systems – i.e., above the federal exemption, or in cases where federal tax is due.

Also note that states have their own rules mirroring or deviating from federal. Generally, state estate tax calculations start with the federal gross estate and deductions, but there can be quirks. For instance, a state might not recognize certain federal deductions (though this is uncommon). Most states with estate taxes allow similar deductions for debts, admin expenses, etc. But check your state’s forms – occasionally, a state might require an add-back or have limits (for example, some states don’t allow a state estate tax marital deduction for a noncitizen spouse unless a state QDOT is elected, similar to federal rules).

One more nuance: if the estate has foreign property and pays a death tax to a foreign country, that is handled by a separate foreign tax credit on the federal return (not as a deduction). The state death tax deduction on Form 706 applies only to U.S. state (and D.C.) taxes.

Casualty and Theft Losses: The tax code also permits a deduction for certain losses during estate administration (IRC §2054). If estate property is lost due to casualty (fire, storm, other disaster) or theft before it’s distributed to beneficiaries, the estate can deduct the unreimbursed loss. For example, if a painting in the estate worth $50,000 is stolen during probate and insurance covers only $20,000, the estate could deduct the remaining $30,000 loss. These deductions have conditions: the loss must occur before distribution of the asset, must not be reimbursed by insurance or otherwise, and must meet the IRS definitions of casualty or theft. Often, an estate can choose to claim such a loss either on Form 706 or on the estate’s income tax return (Form 1041), but not both. In practice, since estate tax is usually the bigger bite, you’d deduct a significant loss on Form 706 if the estate is taxable.

Summary: Always deduct any state estate or inheritance taxes paid – they directly cut the federal estate tax. Track any losses during administration too – those are often overlooked, but they ensure the estate isn’t taxed on value that was destroyed or stolen. By covering state taxes and casualty losses, you make sure the estate tax is imposed only on what truly remains for the heirs.

🚫 What’s Not Deductible on Form 706

We’ve focused on what you can deduct, but it’s equally important to know what you cannot deduct on Form 706. Here are common items that might be mistakenly thought of as deductions but are not allowed:

Gifts or Bequests to Individuals: The value of inheritances given to children, grandchildren, other family, or anyone other than the spouse or a charity is not deductible. For example, if a father’s will leaves $500,000 to his daughter, that $500k is part of the taxable estate, not a deduction. It might seem like that money isn’t “staying in the estate,” but the estate tax provides no deduction for it – transfers to individual beneficiaries are exactly what the tax is designed to tax. In short, don’t list gifts to your kids or friends as deductions; you simply cannot deduct those distributions.
Personal Expenses of Beneficiaries: If the estate pays expenses that are really the personal responsibility of an heir (like a family member’s travel costs to attend the funeral, or utility bills for a house after it’s already been given to a beneficiary), those are not deductible. The estate might cover such costs as a courtesy or convenience, but they aren’t necessary obligations of the estate, so the IRS will disallow them.
Unnecessary Estate Expenses: Deductible administration expenses must be necessary and incurred in settling the estate. Costs that are lavish or that primarily benefit the heirs (rather than the estate) are not deductible. For instance, an extravagant memorial reception at the estate’s expense might be nice, but it isn’t “necessary” to administer the estate – so it wouldn’t be deductible. Similarly, if the estate maintains the decedent’s vacation home for two years solely so the family can use it before distribution, those carrying costs (utilities, taxes, etc.) aren’t deductible because they weren’t essential to preserving the estate (they just benefited the family). The general principle: if an expense is not essential to settling the estate (or could have been avoided), it likely isn’t deductible on Form 706.
Double Deductions: You cannot deduct an expense on Form 706 if it’s also been deducted on the estate’s Form 1041 or on the decedent’s personal Form 1040. No double-dipping is allowed. The IRS will reject deductions that appear on both returns. For example, if the decedent’s medical bills were claimed on the final 1040’s Schedule A, you cannot also deduct them on Form 706. Or if you took executor fees on the estate’s income tax return, you must not list those fees on the estate tax return. Trying to claim the same expense twice will not only be disallowed but could draw penalties.
Unpaid or Forgiven Claims: You might list a claim or debt on the original Form 706, but if the estate never actually pays it (say the claim was later dropped or the creditor forgave the debt), then it ultimately isn’t deductible. The IRS can revisit (and increase) the taxable estate if a deduction was claimed for an amount that the estate didn’t end up paying. For instance, if you deducted a $200,000 lawsuit claim but the suit was dropped with no payment, the IRS will expect the estate to add that $200k back into the taxable estate (and pay the additional tax). So make sure not to deduct amounts that the estate is not actually going to pay.
Fines and Penalties: Debts like taxes are deductible, but penalties owed by the decedent to a government (for example, IRS penalties for late filing, or court fines) are generally not deductible. For income tax purposes, such penalties are never deductible, and for estate tax, while one might argue a fine at death is a debt, the IRS does not favor allowing a deduction for punitive charges. The reasoning is that the tax code doesn’t want to reward or incentivize wrongdoing by granting a deduction for penalties. So assume that government fines or punitive damages are not deductible claims. (If you have a very large fine and it’s arguable, consult a tax attorney—but expect pushback on deductibility.) Paying the base tax owed is deductible; paying a penalty or fine is not.
Interest on Estate Tax or Related Loans: If the estate borrows money to pay the estate tax, or if it elects to pay the estate tax in installments (for certain businesses, IRC §6166), the interest the estate pays on that loan or installment plan is not deductible on Form 706. In general, interest accruing after death on any obligation is considered a cost of estate administration, not a debt the decedent had at death, and thus it’s not deductible as a claim against the estate. The regulations explicitly disallow deducting interest on the federal estate tax itself. So, while interest that the decedent owed up to the date of death (say, on a mortgage or other loan) can be deducted as a debt, interest incurred by the estate after death (on new loans, on extension of tax payments, or on overdue taxes) cannot be deducted on Form 706.
Expenses Belonging on the Estate’s Income Tax: Some expenses the estate pays are valid estate costs but are the kind meant for the estate’s income tax deduction, not for the estate tax return. For example, investment advisory fees or costs incurred to produce income during administration are typically deductible on Form 1041 (they’re considered expenses of managing estate assets). If you try to put purely investment or maintenance expenses on Form 706, the IRS may disallow them, saying they were not necessary for estate settlement. Conversely, if you accidentally take a true administration expense on Form 1041, you miss the estate tax benefit. So make sure each expense goes on the correct return – know whether it’s an estate settlement expense (deductible on 706) or an income-related expense (deductible on 1041).
Voluntary Family Allowances or Gifts: Some states provide for a statutory “family allowance” that an estate must or may pay to support a surviving spouse or minor children during administration. If it’s mandated by state law, that payment can often be deducted as a claim. But if any such payments are purely at the executor’s discretion or above the statutory amount, they would not be deductible. In general, required payments by law (family allowances, elective share settlements) can be deductible claims, whereas extra, voluntary distributions to family members are treated as part of their inheritance (not as expenses) and thus not deductible.

In summary, Form 706 deductions are tightly defined. If an expense or payout doesn’t clearly fall into the allowed categories (or if it’s being counted elsewhere), it likely isn’t deductible. Misidentifying something as a deduction can lead to an IRS audit or adjustment later, so when in doubt, consult the Form 706 instructions or a tax professional to confirm. By avoiding these non-deductible items, you’ll keep the estate tax return accurate and defensible.

🌎 State-Level Nuances: How Local Laws Affect Deductions

Every state has its own legal and tax framework, and these can influence Form 706 deductions in subtle ways. Here are some state-level nuances to be aware of:

1. State Law Determines Validity of Claims: Whether a claim or debt is enforceable is often a matter of state law. The IRS generally allows a deduction for a claim only if that claim is allowable under the laws of the state where the estate is administered. This means if a creditor doesn’t follow state procedures (for example, misses the claim filing deadline), and the estate isn’t obligated to pay, then no deduction is permitted on the federal return. On the flip side, if state law mandates paying something (like a court-approved settlement or a spouse’s elective share), then fulfilling that obligation can be deducted. Always check local probate statutes on claims, as the timing and validity under state law will govern the deduction.

2. Limits on Fees and Commissions: Many states cap or guide what is considered a “reasonable” executor commission or attorney fee for an estate (often a percentage of the estate or based on services rendered). If fees exceed those limits, a probate court may not approve them – and if they’re not allowable under state law, they wouldn’t be deductible. The IRS typically respects amounts approved by a state court. So, while you want to maximize deductions, don’t inflate executor or legal fees beyond what’s reasonable or legal in your jurisdiction. Staying within state guidelines ensures the full amount is deductible without challenge.

3. Community Property Considerations: In community property states, only the decedent’s half of the community property is included in the gross estate, and likewise only that half of any community debt is a claim. Community property law can affect the starting values on Form 706 and, by extension, deductions. For example, if a community property house had a mortgage, only half the mortgage might be deducted on the decedent’s estate (since the surviving spouse is typically responsible for the other half). Also, because the surviving spouse already owns half the community property, the marital deduction might effectively apply only to the decedent’s half passing to the spouse. While community property rules don’t change federal deduction categories, they do change the amounts that go on the return.

4. State Estate Tax Planning Differences: If you live in a state with its own estate tax, deduction planning may differ from the federal. Some states have much lower exemptions than the federal government and do not offer portability of unused exemption to the surviving spouse. This often leads to planning where not all assets go outright to the spouse (to use the first spouse’s state exemption in a family trust, for instance), which means the state estate tax return might intentionally claim fewer marital deductions than the federal return. It’s possible that on the federal Form 706 you’ll claim an unlimited marital deduction, but on the state estate tax return you do not, in order to reduce state tax. Executors should be conscious of these differences – what’s optimal federally (no tax at first death via marital deduction) might not be optimal for state tax. Always coordinate federal and state strategies.

5. QDOTs for State Purposes: As noted, a noncitizen surviving spouse requires a QDOT for the federal marital deduction. States with estate tax usually mirror this requirement. Some states may have you make a separate QDOT election on the state estate tax return if the federal Form 706 wasn’t required (or even if it was). Be mindful that compliance for the federal marital deduction via a QDOT will generally satisfy the state, but you must follow each jurisdiction’s procedure to secure the deduction on all fronts.

6. Inheritance Tax Paid by Beneficiaries: In inheritance tax states, the tax might technically be the liability of the beneficiary rather than the estate. However, the federal estate tax deduction under Section 2058 applies as long as the tax was paid “as the result of the decedent’s death” on property included in the gross estate. This means if, for example, a child paid a state inheritance tax out of their inherited share, the estate can still claim that amount as a deduction on Form 706. It’s an unusual scenario: the estate tax return can deduct a tax not directly paid by the estate. But economically, it reduces what the heir receives, similar to an estate paying it. The key is to gather proof of what inheritance taxes were paid by each beneficiary so the preparer can include those amounts in the state tax deduction.

7. State Allowances and Deductions: States also have their own rules for what’s deductible on a state estate tax return. Generally, they follow federal concepts, but small differences exist. For instance, some state estate tax forms might not allow a deduction for state estate tax itself (you can’t deduct the state tax to compute its own amount – that’s circular), whereas on the federal you deduct state tax. Also, if a state estate tax return allows a state-only QTIP election (for estates where federal 706 wasn’t filed), that can affect the marital deduction on the state level but not change the federal return. These nuances mean the executor must sometimes keep two sets of calculations: one for federal, one for state. Consulting the state’s instructions and possibly a local estate attorney can help avoid missteps.

8. Real-World Example – New Jersey’s Old Estate Tax: As an illustration, New Jersey (which had an estate tax until 2018) tied its tax to the old federal credit system and had a low exemption. Estate planners in NJ often did not leave the entire estate to the spouse, because any amount over $675,000 would incur NJ estate tax if not sheltered. They would use a credit shelter trust up to that amount for kids, and the rest to spouse. On the federal return, the whole estate might be under the large federal exemption so no tax and no issue, but on the NJ return, the marital deduction was limited to the amount above $675k. This kind of state-level planning meant the federal Form 706 and NJ estate return looked different in terms of deductions. The lesson: depending on the state, you might intentionally not take a full marital deduction on the state return even though you do on the federal (or vice versa), due to different exemption rules. The federal estate tax deduction framework is uniform, but state estate tax regimes can lead to strategic deviations.

The bottom line is that state nuances can affect estate tax deductions and strategy. Executors should be aware of their state’s laws on claims, allowable expenses, and estate/inheritance tax requirements. Always adjust the Form 706 preparation for these considerations (and attach any required supporting documentation for state tax deductions claimed). In complex cases, involving a professional with multistate knowledge is wise to ensure no deduction is missed and no improper deduction is taken.

🔍 Comparing Deduction Types: Which Ones Save You the Most?

Not all deductions on Form 706 are created equal. It helps to compare how the different deduction categories function and impact the estate:

Marital & Charitable vs. Others (Scope of Reduction): The marital deduction and charitable deduction can potentially remove huge portions of an estate from taxation – they are unlimited and can even reduce the taxable estate to zero. In contrast, debts, claims, and administrative expenses are limited to the actual amounts spent or owed. Often, marital or charitable deductions account for millions of dollars in large estates, while the other deductions (funeral, debts, fees) might total in the hundreds of thousands. Marital and charitable deductions are thus the primary tax eliminators for very large estates, whereas the other deductions serve to fine-tune and ensure fairness (taxing net value).
Deferral vs. Permanent Savings: The marital deduction generally defers estate tax to the surviving spouse’s estate (it’s a tax postponement – the assets may be taxed later when the spouse dies). The charitable deduction, on the other hand, is a permanent tax saving – those assets will never be taxed, as they’ve left the pool of private wealth and gone to charity. Debts and administrative expenses also permanently reduce the taxable estate (that money is gone to creditors or used up), so they save tax as well. But if you think of it this way: marital = maybe taxed later; charitable/debts/expenses = not taxed at all. This can influence planning (e.g., someone may prefer to give to charity rather than have it taxed or even than give to spouse if spouse’s estate will be huge).
Conditional Nature: Marital and charitable deductions are straightforward in concept but come with conditions (spouse citizenship, qualifying charity, etc.). Debts and claims require that the estate actually has those obligations and pays them – you can’t “create” them for a deduction (at least not legally!). Administrative expenses require that you actually incur them and they’re necessary. So, while one can plan a marital or charitable deduction by bequest decisions, one generally cannot (and should not) manufacture debts or expenses just for a deduction – the IRS would disallow anything not bona fide. In comparison, marital/charity deductions are fully within the control of the decedent’s estate plan, making them powerful planning tools.
Planning Flexibility: Estate planners can decide how much to leave to a spouse or charity to optimize taxes – that’s flexible. Debts and final expenses are not really planning tools (nobody takes on extra debt just to get a deduction because that’s economically unfavorable; you wouldn’t spend a dollar to save 40 cents unless that dollar needed to be spent). However, there is some planning in timing or characterizing expenses (for example, deciding whether to pay the executor a fee – generating a deduction – or have them waive it to pass more to a spousal bequest, which might or might not matter depending on tax situation). Generally, though, marital and charitable bequests are deliberate choices to reduce tax, whereas debts and admin costs are what they are.
Impact on Beneficiaries: Marital and charitable deductions direct wealth to favored recipients (spouse or charities) instead of the IRS. Debts and admin expenses, while deductible, are essentially money out the door that neither the IRS nor the heirs get – they benefit creditors or service providers. Of course, paying them is necessary, but from the heirs’ perspective, a dollar to a charity or spouse stays in the family or society’s benefit, whereas a dollar to a creditor is gone. This psychological aspect doesn’t affect deductibility, but it’s why from an heir’s viewpoint, they’d rather maximize marital/charitable deductions (which mean more to spouse/causes) and minimize debts/expenses.
Unlimited vs. Capped by Reality: There’s no ceiling on marital and charitable deductions – if 100% of the estate goes to a citizen spouse or to charity, you can deduct it all. Debts and expenses are naturally capped by what the decedent owed or what it costs to settle the estate. Typically, those come nowhere near 100% of the estate (if they do, there might be nothing left to tax anyway). So, practically, the unlimited deductions are the only ones that could zero out a very large estate’s tax.
Interrelationship: These deductions can interact. For example, the choice to use the marital deduction extensively might leave a very large second estate which then uses the charitable deduction or other planning. A large charitable deduction could reduce the estate so much that state estate tax or GST tax planning might change (if the taxable estate drops below certain thresholds, etc.). Also, if you have both spouse and charity beneficiaries (e.g., some to spouse, some to charity), the executor might decide how to allocate certain expenses between those portions (for instance, paying debts out of the portion going to heirs versus the portion going to charity doesn’t change total tax, but paying out of the charitable portion effectively wastes a deduction because you’re reducing a tax-free bequest). In short, while each deduction stands on its own, a good plan considers how they work together to minimize tax.
Credits vs. Deductions: For completeness, recall that deductions reduce the taxable estate, whereas credits (like the unified credit from the exemption) reduce the tax after it’s calculated. The deductions we’ve been discussing can greatly shrink the amount on which the estate tax is computed. The estate tax credit (exemption) then shelters a chunk of that taxable estate (currently $13.99M worth). Very large estates will use up the credit and then pay 40% on the rest. That’s where every deduction matters—each dollar not taxed saves 40 cents. Smaller estates may be brought entirely under the credit by deductions. This interplay means deductions can actually bring an estate below the taxable threshold, eliminating tax entirely.

In summary, marital and charitable deductions are the heavy hitters, often dictated by the decedent’s wishes and offering total escape from tax for those assets. The other deductions are critical too – they ensure fairness and can significantly reduce a tax bill, but they usually don’t overshadow the big picture the way a marital or charitable deduction can. An expert executor or planner will use all available deductions in harmony: pay legitimate expenses and debts (and claim them), ensure the spouse is taken care of (marital deduction) or charities get their bequest (charitable deduction), and by doing so, whittle the taxable estate down to the smallest possible size.

📝 Real-World Examples: How Deductions Lower the Estate Tax

To see these principles in action, let’s look at a few simplified scenarios and how deductions can affect the estate tax outcome:

Scenario	Deduction Impact
1. All to Spouse (Marital Deduction Eliminates Tax) John dies with a $10 million estate and leaves everything to his wife.	Deductible: The entire $10 million qualifies for the marital deduction. John’s Form 706 would deduct $10M on Schedule M, making his taxable estate $0. Result: No federal estate tax is due on John’s death. (The $10M will be part of his wife’s estate, but she can use her own exemption or planning at that time.)
2. Estate with Debts and Expenses Mary’s gross estate is $20 million. She leaves $2 million to her children and the rest to various beneficiaries (no spouse or charity). She also had $1 million in debts and administration/funeral costs.	Deductible: About $1 million (the mortgage, credit cards, final medical bills, funeral, executor fees, etc.) is deductible on Mary’s Form 706. That reduces her taxable estate from $20M to $19M before the exemption. Result: The $1M in deductions saves roughly $400,000 in federal estate tax (40% of $1M). Mary’s estate will pay tax on the remaining $19M minus her exemption, but every dollar of debt/expense deducted directly cut the tax.
3. Charitable Bequest Lowers Tax David has a $15 million gross estate. His will leaves $3 million to a charity and the rest to his children. Debts and expenses total $100,000.	Deductible: The $3M to charity is fully deductible, and the $100k of expenses are deductible. That makes David’s taxable estate roughly $15M – $3.1M = $11.9M. Result: The charity bequest reduces the taxable estate by 20%. In terms of tax, assuming he’s over the exemption, the $3M charitable deduction saves about $1.2 million in estate tax that would have been due. His children benefit not only from the remaining $11.9M of estate assets (most of which may be covered by his exemption), but also from knowing $3M went to a good cause rather than to taxes.

These examples illustrate how deductions can dramatically change the tax landscape. In Scenario 1, the unlimited marital deduction means an enormous estate can escape taxation (at least until the second death). In Scenario 2, even without spouse or charity, ordinary deductions like debts and fees shaved down the taxable estate and saved a substantial amount in tax – essentially, the estate only paid tax on what beneficiaries actually received. In Scenario 3, a mix of a charitable deduction and regular expenses significantly lowered the taxable estate, directly translating to tax saved and more money going to intended recipients (kids and charity instead of IRS).

Most real estates are a combination of these elements. The executor’s job is to capture every deduction possible – it can mean the difference between a large tax bill and none at all.

🚫 Avoid These Common Mistakes

Even experienced filers can slip up on estate tax returns. Here are some common mistakes to avoid when dealing with Form 706 deductions:

Failing to Document Deductions: Don’t claim deductions without proper backup. Keep invoices, receipts, and records for every debt and expense. If the IRS audits, you’ll need to show, for example, that a “$50,000 attorney fee” was actually paid for estate administration or that a “$200,000 loan payoff” was a genuine debt of the decedent. Mistake to avoid: claiming a deduction you can’t substantiate – it will likely be disallowed.
Double-Dipping Expenses on 706 and 1041: Coordinate between the estate tax return and the estate’s income tax return. Each deductible expense should be on one return only. If you deduct an attorney fee on Form 706, do not also deduct it on Form 1041 (and vice versa). Always attach the required statement to one return indicating those expenses are not claimed on the other. Mistake to avoid: deducting the same expense on both forms, which will be caught and denied (and could incur penalties).
Overlooking Deductions in Small Estates: If no tax is due, some executors get lax about detailing deductions. But even if the estate isn’t taxable, list all allowable deductions on Form 706 if you’re filing one (for portability or other reasons). This provides a complete record and could matter for state estate taxes. Also, if asset values are later adjusted upwards, what was non-taxable might become taxable – you’ll want those deductions already on record. Mistake to avoid: skipping the effort to report deductions just because the estate owes no tax initially.
Misusing the Marital Deduction for Noncitizen Spouses: Remember, if the surviving spouse isn’t a U.S. citizen, you generally need a QDOT to qualify for the marital deduction. Failing to set up a QDOT (or claiming the marital deduction outright in that scenario) is a big mistake that can invalidate the deduction. Similarly, be careful with terminable interest trusts – if you intend to take a marital deduction via a QTIP, you must properly make the QTIP election on the return. Mistake to avoid: assuming the marital deduction applies automatically in all cases – watch for the noncitizen spouse issue and make required elections for QTIP trusts.
Forgetting the State Tax Deduction: If the estate paid any state estate or inheritance taxes, make sure to claim the deduction on line 3b of the federal return. A surprising number of filers forget to take this, essentially leaving money on the table. It’s often an “afterthought” deduction because the state tax might be resolved later or handled by someone else – but it can be significant. Mistake to avoid: failing to deduct state death taxes paid, thereby overpaying federal estate tax.
Incorrect Asset Valuations: While not a “deduction” issue per se, sloppy valuations can indirectly mess up deductions and taxes. If you undervalue assets to cut tax, you risk penalties and a reduced marital or charitable deduction (since those are based on values). If you overvalue, you might pay more tax and possibly not utilize deductions fully (e.g., an executor fee might be higher than it should be). Use qualified appraisals to get values right. Mistake to avoid: guessing asset values – inaccurate values can ripple through the return and undermine your deduction strategy.
Not Filing Protective Claims: If the estate has a big unresolved claim or lawsuit, don’t omit it and hope for the best. File a Schedule PC protective claim to reserve the deduction. If you don’t and the claim gets paid after the estate tax return is filed, you could end up paying more tax than necessary and then have to fight for a refund later (possibly after the statute of limitations). Mistake to avoid: ignoring contingent claims – always file a protective claim for deduction if there’s a significant uncertain liability.
Missing the Portability Deadline: This isn’t a deduction, but it’s related to getting the most out of an estate. If the decedent is survived by a spouse and the estate is under the exemption, failing to file Form 706 to elect portability (transfer of unused exemption) is a common mistake. It doesn’t cause an immediate tax, but it can cost the surviving spouse’s estate a lot in future taxes. The window to file for portability (within 2 years of death, under Rev. Proc. relief if not timely) shouldn’t be missed. Mistake to avoid: skipping Form 706 when it could save the surviving spouse’s estate millions by preserving unused exemption.
Math and Transcription Errors: Form 706 has a lot of schedules and totals. It’s easy to add a column incorrectly or carry a subtotal to the recap page wrongly. Double-check every calculation. The IRS will correct math errors, but a mistake might cause them to think you left something out. Use software or have a second pair of eyes review the math. Mistake to avoid: simple arithmetic errors that could inflate the taxable estate or understate a deduction.
Lack of Professional Guidance: Estate tax law is complex and changes over time. Especially for larger estates or tricky assets (like family businesses, foreign assets, or unique trusts), not consulting an experienced estate attorney or CPA can lead to missed deductions or compliance issues. The cost of professional advice is usually tiny compared to the stakes of estate tax. Mistake to avoid: going it alone on a complicated Form 706 – the form is daunting and an expert can help ensure you don’t pay a penny more than necessary or omit required information.

By being vigilant about these pitfalls, you’ll file a more accurate and advantageous estate tax return. In essence, maximize valid deductions, document everything, don’t cheat (because it backfires), and seek help when needed. That will keep the estate administration smooth and the tax bill as low as legally possible.

📌 FAQ: Common Questions About Form 706 Deductions

Are funeral expenses deductible on Form 706?
Yes. Funeral and burial costs paid out of the estate are deductible on Form 706, reducing the taxable estate (they are not deductible on personal income tax returns).

Can I deduct the same expense on Form 706 and Form 1041?
No. Each estate expense can be deducted only once – either on the estate tax return (Form 706) or the estate’s income tax return (Form 1041), but not both.

Is the federal estate tax marital deduction unlimited in amount?
Yes. There is no cap on the marital deduction for assets passing to a U.S. citizen surviving spouse – an unlimited amount can qualify and eliminate estate tax on those assets.

Do I need to file Form 706 if no estate tax is due?
No. If the estate’s value is under the federal exemption and you’re not electing portability for a surviving spouse, a Form 706 is generally not required.

Are debts like credit cards and mortgages deductible from the estate?
Yes. Legitimate debts of the decedent (mortgages, loans, credit cards, bills owed at death) are deductible on Form 706, since they reduce the value of the estate passing to heirs.

Is a bequest to my children deductible on the estate tax return?
No. Inheritances left to children or other individuals (other than a spouse) are not deductible; those transfers are part of the taxable estate and do not qualify for any deduction.

Can medical bills from the decedent’s last illness be deducted?
Yes. Unpaid medical expenses at death can be deducted on Form 706 as debts of the estate – provided they were not already deducted on the decedent’s final income tax return.

Does paying state inheritance or estate tax help with federal estate tax?
Yes. Any estate or inheritance taxes paid to a state (or D.C.) because of the decedent’s death can be deducted on the federal Form 706, reducing the taxable estate and potentially the federal tax.

Will my non-U.S. citizen spouse get the marital deduction?
No. A surviving spouse who isn’t a U.S. citizen does not directly qualify for the marital deduction. You’d need to use a qualified domestic trust (QDOT) to obtain a marital deduction for assets passing to a noncitizen spouse.

Can an estate deduct costs of maintaining the decedent’s home during probate?
No. Routine carrying costs (insurance, utilities, maintenance) on estate property generally are not deductible on Form 706 unless they are necessary to preserve the asset for sale. Those expenses may be deductible on the estate’s income tax return (1041) instead if applicable.