No, a bypass trust does not qualify for the unlimited marital deduction under federal tax law. The Internal Revenue Code Section 2056 creates a strict requirement that only property passing directly to a surviving spouse or into specific qualifying trusts can receive the marital deduction, and bypass trusts intentionally fail this test because they limit the surviving spouse’s control over the assets. When the first spouse dies, assets placed in a bypass trust get taxed immediately as part of that spouse’s estate, with the trust using the deceased spouse’s estate tax exemption rather than deferring taxes through the marital deduction.
IRS regulations under Treasury Regulation 20.2056(a)-1 specify that property must pass to the surviving spouse in a way that gives them sufficient ownership rights and control. A bypass trust directly violates this rule because it typically restricts the surviving spouse to receiving only income from the trust, with the principal preserved for children or other beneficiaries after the surviving spouse’s death. The consequence is immediate: if your estate exceeds the federal exemption amount of $13.99 million in 2026, any portion directed to a bypass trust above this threshold faces estate tax at rates up to 40% at the first death, rather than deferring taxation until the second spouse passes away.
According to the Tax Policy Center’s estate tax analysis, only 0.2% of estates in the United States currently pay federal estate tax, affecting roughly 2,000 estates per year, but this number could surge to approximately 7,000 estates annually if the exemption drops to $7 million per person in 2026 when current tax provisions sunset.
What you’ll learn in this guide:
📋 The exact legal requirements that prevent bypass trusts from qualifying for marital deduction and how IRC Section 2056(b)(7) creates exceptions only for QTIP trusts
💰 How to calculate the immediate tax impact when assets flow into a bypass trust versus a marital trust, including specific dollar examples at different estate values
⚖️ The critical difference between portability elections and bypass trusts, and why Form 706 filing deadlines can cost families millions in lost exemptions
🏛️ State-level complications in community property states like California and Texas where marital property characterization changes the entire bypass trust strategy
🔄 The three most common bypass trust scenarios with detailed action-consequence tables showing exactly what happens when you choose different trust structures for estates under $14 million, between $14-28 million, and over $28 million
What Is a Bypass Trust and Why Doesn’t It Get the Marital Deduction?
A bypass trust, also called a credit shelter trust or family trust, receives assets from a deceased spouse’s estate equal to the federal estate tax exemption amount. These assets bypass the surviving spouse’s estate for tax purposes, meaning they won’t count toward the survivor’s estate when calculating estate tax at the second death. The trust typically provides income to the surviving spouse during their lifetime, with the principal passing to children or other named beneficiaries after the survivor dies.
The marital deduction under 26 U.S.C. § 2056 allows unlimited value to pass from one spouse to another without estate tax, but only if the property transfer meets specific control requirements. The surviving spouse must receive the property in a form that gives them enough ownership rights that the property will be included in their own taxable estate when they die. A bypass trust deliberately fails this requirement because it removes assets from the surviving spouse’s taxable estate, which is the entire point of using this trust structure.
Treasury Regulation 20.2056(b)-1 lists six specific situations where property passing to a surviving spouse fails to qualify for the marital deduction. The regulation identifies “terminable interest” rules as the primary barrier—if the surviving spouse’s interest in the property will terminate or fail due to the passage of time or occurrence of an event, and the property will then pass to someone else, the marital deduction doesn’t apply. A bypass trust creates exactly this terminable interest because the surviving spouse receives only a life estate or income interest, with the remainder going to other beneficiaries.
The immediate consequence of losing the marital deduction means that assets placed in a bypass trust get taxed at the first spouse’s death if the total estate exceeds the exemption. For a couple with a $20 million estate in 2026, directing $13.99 million into a bypass trust uses the deceased spouse’s full exemption, but the remaining $6.01 million faces immediate federal estate tax of approximately $2.4 million at 40% rates. Had those assets qualified for marital deduction by passing outright or into a QTIP trust, the tax would defer until the surviving spouse’s death.
The Federal Estate Tax Exemption and How Bypass Trusts Use It
The federal estate tax exemption for 2026 stands at $13.99 million per person, doubled to $27.98 million for married couples. This exemption represents the amount you can transfer at death without paying federal estate tax, with amounts above this threshold taxed at a flat 40% rate. The Tax Cuts and Jobs Act of 2017 temporarily doubled the exemption from its inflation-adjusted 2017 level of approximately $5.5 million, but this enhancement sunsets on December 31, 2025.
Starting January 1, 2026, unless Congress acts, the exemption will revert to approximately $7 million per person, adjusted for inflation. The Congressional Budget Office’s January 2024 baseline projects this reduction will affect thousands of additional estates annually, particularly in high-cost-of-living states where real estate values push middle-income families over the threshold. Estates valued between $7 million and $14 million face the most significant planning challenges because they exceed the post-sunset exemption but don’t have enough assets to justify complex dynasty trust structures.
A bypass trust operates by capturing the deceased spouse’s full exemption amount on the first death. When the first spouse dies, their will or revocable trust directs assets equal to the exemption amount ($13.99 million in 2026, or potentially $7 million after sunset) into the bypass trust. This exhausts the deceased spouse’s exemption, protecting those assets from estate tax at the first death. The trust then provides for the surviving spouse, typically giving them rights to trust income, principal for health, education, maintenance, and support (HEMS standard), and sometimes limited powers of appointment.
The bypass trust assets grow outside the surviving spouse’s estate. Any appreciation, income, or growth that occurs between the first and second death escapes estate taxation entirely because the assets were already taxed (or exempted) at the first death and won’t be counted again at the second death. For a trust that grows from $14 million to $20 million over 15 years, that $6 million of growth passes to beneficiaries free of estate tax, saving $2.4 million in federal taxes at 40% rates.
Why the Terminable Interest Rule Disqualifies Bypass Trusts
The terminable interest rule under IRC Section 2056(b)(1) serves as the primary barrier preventing bypass trusts from qualifying for marital deduction. This rule states that if an interest in property passes from the decedent to the surviving spouse, and the interest will terminate or fail upon the occurrence of an event or contingency or the passage of time, and someone other than the spouse will then possess the property, the interest is a terminable interest that doesn’t qualify for the marital deduction. The rule exists to ensure that property receiving marital deduction treatment will ultimately be taxed in the surviving spouse’s estate, preventing couples from skipping a generation of estate tax through clever trust planning.
A bypass trust creates a textbook terminable interest. The surviving spouse receives an income interest or other limited rights during their lifetime, but this interest terminates at their death. The remainder interest passes to children or other named beneficiaries, not back to the surviving spouse’s estate. This structure means the property won’t be included in the surviving spouse’s gross estate under IRC Section 2033 or Section 2041, which is exactly what makes it fail the marital deduction test.
Revenue Ruling 72-153 clarified that even giving the surviving spouse substantial rights in a trust, such as all income plus the right to invade principal for health, education, maintenance, and support, doesn’t cure the terminable interest problem. The IRS reasoned that as long as a remainder interest passes to someone else after the surviving spouse’s death, the surviving spouse doesn’t have a qualifying interest regardless of how generous their lifetime benefits might be. The consequence is clear: if you want marital deduction treatment, you must either give property outright to your surviving spouse or use one of the specific statutory exceptions like a QTIP trust.
The terminable interest rule contains narrow exceptions that Congress carved out in IRC Section 2056(b)(5) and Section 2056(b)(7). Section 2056(b)(5) allows marital deduction for property in trust if the surviving spouse has the right to all income payable at least annually, plus a general power of appointment over the trust principal exercisable by the spouse alone. A bypass trust doesn’t meet this test because it typically gives children or other beneficiaries the remainder interest rather than giving the spouse full power to appoint the property to anyone including themselves.
QTIP Trusts Versus Bypass Trusts: The Critical Marital Deduction Difference
A Qualified Terminable Interest Property (QTIP) trust represents the most common exception to the terminable interest rule. IRC Section 2056(b)(7) allows marital deduction for property in which the surviving spouse has a qualifying income interest for life, even though the principal passes to other beneficiaries after the spouse’s death. This exception requires that the surviving spouse receive all income from the property, payable at least annually, and that no person has the power to appoint the property to anyone other than the surviving spouse during the spouse’s lifetime.
The QTIP trust qualifies for marital deduction because the executor makes an irrevocable election on Form 706, Schedule M to treat the trust property as qualified terminable interest property. This election causes the trust assets to be included in the surviving spouse’s gross estate under IRC Section 2044, satisfying the IRS’s requirement that marital deduction property ultimately faces estate tax in the surviving spouse’s estate. The trade-off is clear: you get tax deferral at the first death, but the assets count in the survivor’s estate at the second death.
A bypass trust makes no such election and specifically avoids inclusion in the surviving spouse’s estate. The trust receives assets up to the deceased spouse’s exemption amount, uses that exemption at the first death, and removes those assets from the survivor’s taxable estate. This means bypass trust assets get “taxed” once (using the exemption) rather than twice, but you lose the marital deduction benefit and must use exemption immediately rather than deferring tax.
| Trust Feature | QTIP Trust (Marital Trust) | Bypass Trust (Credit Shelter Trust) |
|—|—|
| Qualifies for marital deduction | Yes—defers all estate tax to second death | No—uses exemption at first death |
| Included in surviving spouse’s estate | Yes—full value included under IRC § 2044 | No—excluded from survivor’s taxable estate |
| Income requirements for surviving spouse | Must receive 100% of income annually | May receive income or only HEMS principal |
| Control over remainder beneficiaries | Can’t change; fixed at first spouse’s death | Can’t change; fixed at first spouse’s death |
| Estate tax at first death | Zero—unlimited marital deduction applies | Zero if within exemption; 40% on excess |
| Estate tax at second death | Taxed if survivor’s estate exceeds exemption | Not taxed—already removed from survivor’s estate |
| Growth between deaths | Taxed at second death | Escapes taxation—growth occurs outside estate |
| Form 706 election required | Yes—must elect QTIP treatment on Schedule M | No election needed |
The Estate of Clayton v. Commissioner established that married couples can use “formula clauses” in wills and trusts to split assets between bypass trusts and marital trusts based on the estate tax exemption amount at death. This case validated the planning technique where a will directs the largest amount that can pass free of estate tax to a bypass trust, with the balance going to a QTIP trust. The formula adjusts automatically based on the exemption in effect when the first spouse dies, ensuring maximum use of both spouses’ exemptions.
How Portability Changed Bypass Trust Planning After 2010
The Tax Relief Act of 2010 introduced portability, allowing a surviving spouse to inherit any unused estate tax exemption from a deceased spouse. IRC Section 2010(c)(2) created the concept of “deceased spousal unused exclusion amount” (DSUE), which lets the survivor add their deceased spouse’s unused exemption to their own. This means a couple can use their combined $27.98 million exemption even if all assets pass to the surviving spouse rather than being split into separate trusts.
Portability partially replaces the need for bypass trusts in estates under the combined exemption amount. Before 2010, married couples had to fund bypass trusts at the first death or lose the deceased spouse’s exemption forever. After 2010, if the first spouse leaves everything outright to the survivor or in a QTIP trust, the executor can elect portability on Form 706, and the survivor gains the ability to use both exemptions at their subsequent death. The advantage is simplicity—no separate trust administration, no restrictions on the survivor’s use of assets, and no complex trust accounting.
Portability requires filing Form 706 within nine months of the first spouse’s death (plus extensions), even if no estate tax is due. IRS Revenue Procedure 2017-34 provides relief for estates that miss this deadline, allowing late portability elections within two years of the decedent’s death if the estate wasn’t required to file Form 706 due to being under the filing threshold. The catch is that failing to elect portability within these deadlines results in permanent loss of the deceased spouse’s exemption, which for a 2026 estate means losing $13.99 million of tax-free transfer capacity.
Bypass trusts still offer advantages over portability in several situations. Assets in a bypass trust appreciate outside the surviving spouse’s estate, so growth between the first and second death escapes taxation. With portability, all assets and their growth end up in the survivor’s estate. For a $14 million bypass trust that grows to $22 million over 15 years, that $8 million of appreciation transfers tax-free to beneficiaries. With portability, the full $22 million counts in the survivor’s estate, potentially triggering $8.8 million in taxes at 40% rates if the survivor has no remaining exemption.
Bypass trusts protect assets from the surviving spouse’s creditors, new spouse, or poor financial decisions. Portability gives the survivor complete control over all assets, exposing them to lawsuits, long-term care costs, or claims from a subsequent spouse in a remarriage. State property law in common law states treats inherited property as separate property, but once the surviving spouse commingles inherited funds with marital property in a remarriage, tracing becomes difficult and expensive.
The Three Most Common Bypass Trust Scenarios
Scenario One: Estates Under $14 Million With No State Estate Tax
Married couples with estates under $14 million face the simplest bypass trust analysis in 2026. The entire estate falls within one spouse’s current federal exemption, meaning no federal estate tax will apply at either death regardless of whether they use bypass trusts, portability, or outright transfers. State estate tax becomes the determining factor because 12 states and the District of Columbia impose separate estate taxes with exemptions ranging from $1 million in Oregon to $13.61 million in Connecticut.
In states without estate tax like Florida, Texas, or Nevada, portability usually makes more sense than bypass trusts for couples under $14 million. Filing Form 706 to elect portability costs $2,000-$5,000 in professional fees but provides maximum flexibility for the surviving spouse. The survivor can spend, save, or invest all assets without trust restrictions. When the survivor dies, their estate uses both spouses’ combined $27.98 million exemption, easily covering the full estate value with no tax due.
The exception occurs when non-tax goals drive trust planning. A bypass trust protects assets from a surviving spouse who has poor money management skills, suffers from addiction or gambling problems, or might remarry someone seeking to claim half the estate. The trust also ensures that assets ultimately pass to the deceased spouse’s chosen beneficiaries (usually children from the marriage) rather than the survivor’s new spouse or other heirs. State law regarding elective share doesn’t apply to bypass trust assets because they never belonged to the surviving spouse.
| Estate Value & State | Optimal Strategy | Reason |
|—|—|
| $8 million estate in Florida (no state tax) | Portability election—avoid bypass trust | No tax at either death; survivor gets full control |
| $12 million estate in Texas (no state tax) | Portability election—avoid bypass trust | Under combined exemption; simplifies administration |
| $4 million estate in Oregon (state exemption $1M) | State bypass trust for $1M, rest to spouse | Protects from Oregon estate tax at second death |
| $10 million in New York (state exemption $7.16M) | Split: $7.16M bypass, $2.84M to spouse | Uses state exemption; balance qualifies for state marital deduction |
| $13 million in Massachusetts (state exemption $2M) | Complex—need state bypass + QTIP strategy | Must coordinate federal portability with state bypass trust planning |
Scenario Two: Estates Between $14 Million and $28 Million
Couples with estates between $14 million and $28 million face estate tax at the second death unless they implement bypass trust planning or portability. These estates exceed one spouse’s exemption but fall within the combined exemption for both spouses. The planning goal becomes preserving both exemptions and minimizing tax on growth that occurs between deaths.
A classic bypass trust strategy funds a credit shelter trust with $13.99 million at the first death, using the deceased spouse’s full exemption. The balance passes to the surviving spouse outright or in a QTIP trust, qualifying for marital deduction. The executor files Form 706, reports the bypass trust under the deceased spouse’s exemption (zero tax), and claims marital deduction for the balance (also zero tax). At the second death, only the survivor’s assets (including the QTIP trust) get taxed, using the survivor’s $13.99 million exemption.
The alternative uses portability by leaving everything to the surviving spouse (outright or QTIP), electing portability on Form 706, and giving the survivor $27.98 million of combined exemption to use at death. This approach works if the estate doesn’t appreciate significantly, but exposes all growth to taxation at the second death. For a couple with $20 million that grows 5% annually for 15 years, the estate reaches $41.6 million at the second death, triggering $5.4 million in federal estate tax even with the combined exemption.
| Estate Value | Bypass Trust Approach | Portability Approach | Tax Difference |
|—|—|—|
| $18 million, 15 years between deaths, 5% growth | $14M in bypass grows to $29.1M (no tax on growth); $4M to spouse grows to $8.3M (taxed if over exemption) | Full $18M to spouse grows to $37.4M; taxed on amount over $28M exemption ($3.8M tax) | Bypass saves $1.5M in taxes by sheltering growth |
| $25 million, 10 years between deaths, 4% growth | $14M in bypass grows to $20.7M (sheltered); $11M to spouse grows to $16.3M (partially taxed) | Full $25M grows to $37M; taxed on $9M over exemption ($3.6M tax) | Bypass saves approximately $2.1M by protecting appreciation |
The American Taxpayer Relief Act of 2012 made portability permanent, ending the uncertainty about whether this provision would expire. This permanence shifted planning for many couples away from bypass trusts and toward portability, especially in estates under $20 million where administrative simplicity outweighs tax savings. Estate planners still recommend bypass trusts for estates over $20 million because the tax savings on sheltered growth justifies the cost and complexity of trust administration.
Scenario Three: Estates Over $28 Million
Estates exceeding $28 million will face estate tax regardless of planning technique because they exceed the combined exemption for both spouses. The planning goal shifts from avoiding tax entirely to minimizing tax through every available tool: bypass trusts, QTIP trusts, portability, lifetime giving, grantor retained annuity trusts (GRATs), and dynasty trust structures. These estates need sophisticated planning that coordinates federal estate tax, state estate tax, generation-skipping transfer tax, and income tax considerations.
A typical structure for a $40 million estate in 2026 funds a $13.99 million bypass trust at the first death, places another $13.99 million in a QTIP trust (deferring tax), and faces immediate estate tax on the remaining $12.02 million at 40% rates ($4.8 million tax due). The bypass trust grows outside both spouses’ estates, the QTIP trust defers tax until the second death, and the executor pays the $4.8 million tax from the estate or through life insurance proceeds. At the second death, the survivor’s personal assets plus the QTIP trust get taxed using the survivor’s $13.99 million exemption, with any excess taxed at 40%.
The most tax-efficient approach uses lifetime giving to move assets out of the estate before death. Each spouse can give $13.99 million during life using their lifetime exemption, removing those assets and all future appreciation from their estates. IRC Section 2001(b) requires adding back lifetime gifts when calculating estate tax, but any appreciation after the gift escapes taxation. For parents who gift $20 million to an irrevocable trust for children when the parents are 60, and that trust grows to $50 million by age 80, the $30 million of growth transfers tax-free, saving $12 million in estate taxes.
| Planning Tool | When to Use | Tax Benefit | Drawback |
|—|—|—|
| Maximum bypass trust ($14M) | Every estate over $14M | Shelters $14M plus growth from second estate tax | Limits surviving spouse access; complex administration |
| QTIP trust for balance | When spouse needs income but estate exceeds $28M | Defers tax; maintains control over ultimate beneficiaries | Assets taxed at second death including all growth |
| Lifetime giving ($14M per spouse) | When donors are younger and assets appreciate | Removes appreciation from estate permanently | Loses step-up in basis; irrevocable gift |
| Dynasty trust (GST exempt) | Multi-generational wealth transfer | Avoids estate tax for multiple generations (40% savings every generation) | Complex; requires GST exemption allocation |
| Life insurance (ILIT) | To pay estate tax liability | Provides liquidity; death benefit income-tax-free | Premiums expensive; must fund annually |
The generation-skipping transfer tax complicates planning for estates over $28 million because this additional 40% tax applies to transfers to grandchildren or trusts that skip a generation. The GST exemption equals the estate tax exemption ($13.99 million in 2026), but requires specific allocation on Form 709 or Form 706. Properly structured bypass trusts receive automatic GST exemption allocation under IRC Section 2632(c), allowing the trust to benefit children during life and pass to grandchildren without GST tax. Poor GST planning can result in 80% combined tax (40% estate tax plus 40% GST tax) on transfers to grandchildren.
Community Property States: Special Considerations for Bypass Trusts
Nine states follow community property rules: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. Alaska allows couples to opt into community property treatment. Community property law treats assets acquired during marriage as owned 50/50 by both spouses, regardless of whose name appears on title. This equal ownership affects bypass trust funding because only half of community property belongs to the deceased spouse and can fund the bypass trust.
A married couple in California owns a home worth $2 million, investment accounts worth $4 million, and a business worth $8 million, all acquired during marriage. Under California community property law, each spouse owns exactly $7 million (half of the $14 million total). When the first spouse dies, only their $7 million half can fund a bypass trust. The surviving spouse already owns the other $7 million as their separate property, which doesn’t pass through the deceased spouse’s estate and can’t fund the bypass trust.
The community property rule creates a critical problem for bypass trust planning. If the couple’s goal was to fund a $13.99 million bypass trust (using the full 2026 exemption), they fall short because only $7 million of community property passes at the first death. The solution requires either converting separate property to community property before death, which triggers a 50/50 split, or having one spouse gift their separate property to the other spouse during life to create community property, or using separate property to fund the bypass trust.
| Property Type | Ownership at Death | Can Fund Bypass Trust? | Special Rules |
|—|—|—|
| Community property | 50% to deceased spouse; 50% already owned by survivor | Only the deceased’s 50% share | Survivor owns other half as separate property |
| Deceased spouse’s separate property | 100% belongs to deceased spouse | Yes—full value available | Common for premarital assets or inheritance |
| Survivor’s separate property | 100% belongs to surviving spouse | No—not part of deceased’s estate | Passes outside the estate entirely |
| Quasi-community property (CA) | Treated as community property at death | 50% available for bypass trust | Special rule for assets acquired outside CA |
California Probate Code Section 100 defines community property and establishes the 50/50 ownership rule. When the first spouse dies, their 50% share of community property receives a step-up in basis under IRC Section 1014(b)(6), but the surviving spouse’s 50% also gets a step-up under the special community property basis rule in IRC Section 1014(b)(6). This full step-up provides a significant income tax benefit because when the survivor later sells appreciated community property, they pay capital gains tax only on appreciation after the first spouse’s death, not on the original built-in gain.
Common law states like New York, Florida, and Illinois don’t recognize community property. All property belongs to whichever spouse holds title unless the couple explicitly establishes joint ownership. A house titled in the husband’s name alone belongs 100% to the husband, regardless of when it was purchased or whether marital funds paid for it. This means the full value of separately-titled property passes through the deceased spouse’s estate and can fund a bypass trust, but the surviving spouse has no automatic ownership claim to the property.
Elective share laws in common law states protect surviving spouses from complete disinheritance. New York’s Estates, Powers and Trusts Law Section 5-1.1-A gives a surviving spouse the right to claim the greater of $50,000 or one-third of the deceased spouse’s net estate. This elective share takes priority over other distributions, potentially reducing the amount available to fund a bypass trust. Florida provides an even stronger protection through Florida Statute Section 732.2025, granting the surviving spouse a 30% elective share that includes many trust assets.
State Estate Taxes and How They Affect Bypass Trust Planning
Twelve states and the District of Columbia impose estate taxes separate from federal estate tax: Connecticut, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New York, Oregon, Rhode Island, Vermont, Washington, and D.C. Six states impose inheritance taxes: Iowa, Kentucky, Maryland, Nebraska, New Jersey, and Pennsylvania. Maryland uniquely imposes both estate and inheritance taxes. State estate tax exemptions range from $1 million in Oregon to $13.61 million in Connecticut, creating a patchwork of rules that require state-specific planning.
Oregon’s $1 million exemption creates the most aggressive state estate tax in the nation. A married couple in Portland with a $3 million estate faces zero federal estate tax but owes Oregon estate tax at the second death if they don’t implement bypass trust planning. The optimal strategy funds a $1 million Oregon bypass trust at the first death (using the Oregon exemption), claims the Oregon marital deduction for the remaining $2 million passing to the spouse, and preserves the full $2 million in the survivor’s Oregon exemption for the second death. This planning eliminates Oregon estate tax on a $3 million estate.
Massachusetts and New York both impose estate taxes but use different calculation methods. Massachusetts allows a lifetime exemption of $2 million but calculates tax on the entire estate once it exceeds the exemption, creating a harsh “cliff” effect. An estate worth $2 million pays zero tax, but an estate worth $2.1 million pays tax on the full $2.1 million, not just the excess. New York provides a $7.16 million exemption with a similar cliff, but the cliff disappears once the estate exceeds the exemption by less than 5%, creating complex planning calculations.
| State | Estate Tax Exemption (2026) | Top Tax Rate | Marital Deduction Available? | Planning Strategy |
|—|—|—|—|
| Oregon | $1 million | 16% | Yes | State bypass trust for $1M; remainder to spouse |
| Massachusetts | $2 million | 16% | Yes | State bypass for $2M; watch cliff effect over exemption |
| New York | $7.16 million | 16% | Yes | Coordinate with federal bypass; mind 105% cliff |
| Connecticut | $13.61 million | 12% | Yes | Minimal state concern; focus on federal planning |
| Washington | $2.193 million | 20% | Yes | State bypass critical; highest state estate tax rate |
| Illinois | $4 million | 16% | Yes | State bypass for $4M; portability for federal |
State estate tax bypass trust planning requires separate state bypass trusts that use the state exemption independently from federal bypass trusts. A couple in Massachusetts with $10 million funds a $2 million state bypass trust using the Massachusetts exemption, then funds a federal bypass trust with an additional $11.99 million using the remainder of the federal exemption, for total bypass trust funding of $13.99 million. The state bypass trust protects $2 million from Massachusetts estate tax, while the federal bypass trust protects the full $13.99 million from federal estate tax.
Washington’s estate tax imposes the highest state rate at 20%, applied to estates over $2.193 million. This creates intense pressure for Washington couples to implement bypass trust planning even on estates under $5 million. The Washington estate tax generated $269 million in revenue in fiscal year 2023, affecting approximately 1,600 estates according to the Washington Department of Revenue. Most of these estates owed tax despite qualifying for full federal exemption, highlighting how state taxes drive trust planning decisions independently from federal tax.
Form 706: Filing Requirements and Marital Deduction Elections
Form 706 (United States Estate Tax Return) must be filed within nine months of the decedent’s date of death, with an automatic six-month extension available by filing Form 4768. The form reports the value of the decedent’s gross estate, claims applicable deductions (including marital deduction), calculates any estate tax due, and makes critical elections like portability and QTIP. Filing Form 706 is mandatory when the gross estate exceeds the filing threshold, which equals the basic exclusion amount ($13.99 million in 2026).
Estates under the filing threshold can voluntarily file Form 706 to elect portability of the deceased spousal unused exclusion amount (DSUE). IRS Instructions for Form 706 specify that an estate not required to file can submit a simplified return solely to elect portability, reporting only the information necessary to calculate the DSUE amount. The executor must still provide accurate valuations for all estate assets because errors can trigger IRS examination and disallowance of the portability election.
Form 706 Schedule M reports property passing to the surviving spouse for which the estate claims marital deduction. Each item of property must be listed separately with its value and a description of how it passes to the spouse (outright, in trust, by beneficiary designation, etc.). For QTIP trust property, Schedule M Part 2 lists the specific trust assets for which the executor elects QTIP treatment. This election is irrevocable and must clearly identify the trust and the property subject to the election.
| Form 706 Section | Purpose | Bypass Trust Reporting | QTIP Trust Reporting |
|—|—|—|
| Schedule B (Stocks & Bonds) | List publicly traded securities | Include if owned by decedent | Report separately if funding QTIP |
| Schedule E (Real Estate) | Report real property | Include if funding bypass trust | Report if funding QTIP; must elect |
| Schedule F (Other Assets) | Report partnership interests, business interests, personal property | Include bypass trust funding assets | Report QTIP funding assets |
| Schedule M (Marital Deduction) | Claim marital deduction | Do NOT report bypass trust property here | Must list all QTIP property and check QTIP election box |
| Schedule U (DSUE Portability) | Calculate unused exemption for portability | Include as part of exemption used | Reduces available portability by property value |
The QTIP election on Schedule M must be affirmative—the executor must check the QTIP election box and identify the specific property subject to election. Regulation 20.2056(b)-7(b)(4) allows partial QTIP elections, where the executor elects QTIP treatment for only a portion of a trust. This technique lets the executor use some of the deceased spouse’s exemption immediately while deferring tax on the remainder. For an estate with $20 million in a trust that could qualify as QTIP, electing QTIP for only $6 million lets the executor use the deceased spouse’s $13.99 million exemption on the other $14 million (going to a bypass trust), deferring tax on the $6 million QTIP portion.
Estate of Smith v. Commissioner established that the executor’s QTIP election is binding and irrevocable once Form 706 is filed. The estate attempted to revoke its QTIP election after realizing the surviving spouse remarried and the QTIP assets would pass to the new spouse’s children rather than the decedent’s children. The Tax Court ruled that the executor had no authority to revoke the election, and the Service wasn’t required to allow amendment. The consequence was harsh—assets passed to unintended beneficiaries, and the estate couldn’t recapture the tax benefit.
Mistakes to Avoid When Planning With Bypass Trusts
Funding the bypass trust with the wrong assets creates costly mistakes. Assets with large unrealized gains (low basis) should generally fund QTIP trusts rather than bypass trusts because bypass trust assets don’t receive a second step-up in basis at the surviving spouse’s death. IRC Section 1014(a) steps up the basis of assets included in a decedent’s gross estate to fair market value at death. Bypass trust assets received their step-up at the first death but won’t get another step-up at the second death because they’re not in the surviving spouse’s estate. QTIP trust assets get a second step-up because IRC Section 2044 includes them in the surviving spouse’s gross estate.
Stock purchased for $100,000 now worth $2 million illustrates this problem. If the stock funds a bypass trust, it gets a step-up to $2 million at the first death, grows to $3 million, and passes to children with a $2 million basis—they owe capital gains tax on $1 million when they sell. If the stock funds a QTIP trust instead, it gets a step-up to $2 million at the first death, the QTIP trust holds it until the surviving spouse dies, it receives a second step-up to $3 million at the second death under IRC Section 1014(a), and children inherit with a $3 million basis—no capital gains tax when they sell.
Failing to file Form 706 to elect portability permanently loses the deceased spouse’s unused exemption. Executors often skip Form 706 when estates fall under the filing threshold, not realizing that portability isn’t automatic. IRC Section 2010(c)(5)(A) requires an affirmative election on a timely-filed Form 706 to transfer DSUE to the surviving spouse. Missing the nine-month deadline (plus six-month extension) means the exemption disappears. Revenue Procedure 2017-34 provides relief only for estates that weren’t required to file, and only if the request comes within two years of death and five months after the deadline.
A couple with $8 million in 2026 faces this exact scenario. When the husband dies, the executor doesn’t file Form 706 because the estate is well under the $13.99 million filing threshold. The widow later dies 10 years later with a $16 million estate of her own (from the inheritance plus appreciation). Without portability, her estate can use only her own $13.99 million exemption, leaving $2.01 million exposed to estate tax at 40%—a $804,000 tax bill. Had the husband’s executor filed Form 706 to elect portability, the widow would have had $27.98 million in combined exemption, resulting in zero estate tax.
Creating a bypass trust that violates the five-or-five power limit can trigger unintended estate inclusion. IRC Section 2041(b)(2) provides a safe harbor allowing the surviving spouse to withdraw up to the greater of $5,000 or 5% of trust principal annually without causing estate inclusion. If the trust allows the spouse to withdraw more than this amount, the excess withdrawal right creates a taxable general power of appointment. The consequence is that the portion subject to the excess power gets pulled back into the surviving spouse’s estate, defeating the purpose of the bypass trust.
A $10 million bypass trust that gives the surviving spouse the right to withdraw up to $1 million annually (10% of the $10 million trust) exceeds the five-or-five limit. The safe harbor allows only $500,000 (5% of $10 million), so the excess $500,000 withdrawal power creates estate inclusion under IRC Section 2041. At the surviving spouse’s death, $500,000 of the bypass trust gets included in their taxable estate even though it was supposed to be sheltered. Proper drafting limits annual withdrawals to “the greater of $5,000 or 5% of the trust principal” to stay within the safe harbor.
Giving the surviving spouse a general power of appointment over bypass trust assets causes complete estate inclusion. IRC Section 2041(a)(2) includes in the gross estate any property over which the decedent held a general power of appointment at death. A general power exists when the power holder can appoint property to themselves, their estate, their creditors, or creditors of their estate. If bypass trust language gives the surviving spouse the power to distribute principal “to anyone, including herself,” this creates a general power that pulls the entire trust into the spouse’s taxable estate.
The mistake often occurs when attorneys copy language from marital trust forms into bypass trust forms. A QTIP trust requires the surviving spouse to have a qualifying income interest but cannot have a general power of appointment. A Section 2056(b)(5) marital trust requires the spouse to have a general power of appointment to qualify for marital deduction. A bypass trust should have neither—the spouse should have only limited powers (like a HEMS standard) and special powers of appointment (the power to give property to children, for example, but not to the spouse themselves).
Failing to coordinate the bypass trust with retirement accounts wastes tax benefits. IRC Section 408(d)(3)(C) prohibits assigning IRAs or 401(k) accounts to trusts without triggering immediate income taxation, so retirement accounts must pass by beneficiary designation rather than through a will or revocable trust. If the bypass trust is named as beneficiary of a $2 million IRA, the trust receives the IRA subject to income tax over time, but the $2 million counts toward the estate tax exemption. This uses $2 million of exemption to shelter an asset that carries a built-in income tax liability worth approximately $800,000 at a 40% income tax rate.
The better approach names the surviving spouse as primary beneficiary of retirement accounts (qualifying for spousal rollover treatment under IRC Section 408(d)(3)) and directs lower-basis, appreciation-potential assets like real estate or growth stocks to the bypass trust. The spouse rolls the IRA into their own IRA, takes required minimum distributions over their life expectancy, and defers income tax as long as possible. The bypass trust holds assets that appreciate outside the survivor’s estate. This coordination can save $500,000 or more in combined income and estate taxes on a $10 million estate.
Bypass Trust Pros and Cons
| Advantage | Why It Matters |
|---|---|
| Shelters appreciation from estate tax | Growth between first and second death transfers tax-free; a $14M trust growing to $25M saves $4.4M in estate taxes |
| Protects assets from surviving spouse’s creditors | Trust assets can’t be seized in lawsuits, bankruptcy, or long-term care claims against the surviving spouse |
| Ensures children from first marriage inherit | Prevents surviving spouse from disinheriting stepchildren in favor of new spouse or new spouse’s children |
| Uses the deceased spouse’s exemption immediately | Captures the exemption before potential legislative reduction; no risk of losing exemption to future law changes |
| Avoids probate on trust assets at second death | Trust assets pass directly to beneficiaries without court process, saving time and fees |
| Disadvantage | Why It Matters |
|---|---|
| Loses second step-up in basis | Assets don’t get revalued at surviving spouse’s death; heirs pay capital gains on appreciation after first death |
| Requires annual trust tax returns | Form 1041 compliance costs $1,500-$3,000 annually; trust may pay higher income tax rates than individuals |
| Limits surviving spouse’s access to principal | Spouse typically can’t access principal except for HEMS; reduces financial flexibility |
| Costs $3,000-$7,000 annually to administer | Trustee fees, accounting fees, legal fees add up over 15-20 years to $75,000+ in total costs |
| Creates complexity for family | Surviving spouse resents restrictions; family dynamics suffer when spouse can’t fully control assets |
The HEMS Standard: Health, Education, Maintenance, and Support
Most bypass trusts give the surviving spouse the right to receive distributions of principal for health, education, maintenance, and support, known as the HEMS standard. IRC Section 2041(b)(1)(A) provides that a power limited by an ascertainable standard relating to health, education, support, or maintenance doesn’t create a taxable general power of appointment. This allows the surviving spouse to access bypass trust principal for living expenses without causing estate inclusion, but limits access to amounts the trustee determines are reasonably necessary for these purposes.
Regulation 20.2041-1(c)(2) defines ascertainable standards as those that can be measured objectively. “Support” means maintaining the beneficiary’s accustomed standard of living. “Maintenance” has the same meaning. “Health” includes medical, dental, hospital, and nursing care. “Education” covers tuition, books, and expenses related to educational courses. Powers to distribute for “comfort,” “welfare,” or “happiness” don’t qualify as ascertainable standards because they’re too subjective.
The trustee must determine whether a distribution request meets the HEMS standard. If the surviving spouse requests $50,000 to cover medical expenses not covered by insurance, the trustee can approve this as a health-related distribution. If the spouse requests $100,000 to buy a luxury vacation home, the trustee must deny the request because vacation homes don’t qualify under HEMS—they exceed maintenance of the spouse’s standard of living. If the spouse requests $200,000 because their existing home needs major repairs, the trustee can approve this as maintenance-related.
| Request Type | Qualifies Under HEMS? | Trustee’s Authority | Consequence of Approval |
|—|—|—|
| Medical expenses not covered by insurance | Yes—health standard | Must approve if reasonable | No estate inclusion; proper HEMS use |
| Cost to maintain existing home | Yes—maintenance standard | Must approve if reasonable | No estate inclusion; preserves standard of living |
| Private school tuition for grandchildren | Maybe—depends on prior pattern | Discretionary if part of spouse’s support obligation | If excessive, could indicate support beyond HEMS |
| Luxury vacation | No—exceeds maintenance standard | Should deny | Approval could violate fiduciary duty |
| New car to replace old vehicle | Yes—maintenance standard | Must approve reasonable replacement | No estate inclusion if reasonable |
| Investment in business venture | No—not health, education, maintenance, or support | Must deny | Approval breaches trust terms |
Old Colony Trust Co. v. Commissioner established that maintenance and support mean maintaining the beneficiary at their existing standard of living, not improving it. The court held that distributions to maintain the spouse’s accustomed lifestyle qualify under HEMS even if that lifestyle is luxurious, but distributions to upgrade the spouse’s lifestyle don’t qualify. A spouse who lived in a $2 million home before the first spouse’s death can use bypass trust principal to maintain that home, but can’t use trust funds to upgrade to a $5 million home.
Some bypass trusts give the surviving spouse a limited testamentary power of appointment, allowing them to redirect trust assets among the deceased spouse’s chosen class of beneficiaries at their death. A power to appoint among “descendants” lets the spouse decide which children or grandchildren receive how much, but doesn’t allow the spouse to give assets to themselves, their estate, or non-descendants. IRC Section 2041(b)(1) treats limited powers (exercisable only in favor of a specified class that doesn’t include the power holder) as not creating estate inclusion, preserving the bypass trust’s tax benefits.
Clayton QTIP Elections and Disclaimer Planning
A Clayton election, named after the Estate of Clayton case, allows the executor to decide after the first spouse’s death whether to treat a trust as a QTIP trust (qualifying for marital deduction) or as a bypass trust (using the deceased spouse’s exemption). The trust instrument authorizes the executor to make a partial or complete QTIP election for trust assets, giving maximum flexibility based on the actual value of the estate, the surviving spouse’s needs, and the estate tax law in effect at death.
Revenue Ruling 2006-26 approved Clayton QTIP elections, holding that the executor’s power to allocate trust assets between QTIP and non-QTIP treatment doesn’t violate the QTIP requirements. The trust instrument must grant all income to the surviving spouse, prohibit distributions to anyone other than the spouse during the spouse’s life, and allow the executor to elect QTIP treatment for all or a fractional share of the trust. After the first spouse’s death, the executor determines the optimal split based on the estate’s size and the couple’s combined exemption needs.
A married couple with $18 million creates a Clayton QTIP trust to receive all assets at the first death. The trust gives the surviving spouse all income and meets QTIP requirements, but the will authorizes the executor to elect QTIP treatment for any portion of the trust. When the husband dies in 2026, the executor evaluates the situation: the estate is $18 million, the exemption is $13.99 million, and the widow has $2 million of her own assets. The executor elects QTIP treatment for $4.01 million (deferring tax), and doesn’t elect QTIP for $13.99 million (which becomes bypass trust property, using the husband’s exemption). This split eliminates tax at the first death and preserves the widow’s full $13.99 million exemption for her subsequent death.
| Estate Value | Assets to Bypass (No QTIP Election) | Assets to QTIP (With QTIP Election) | Tax at First Death | Tax at Second Death (Estimated) |
|—|—|—|—|
| $10 million | $10M (using exemption) | Zero | Zero | Zero (all under combined exemption with portability) |
| $18 million | $14M (maximum bypass) | $4M (defer tax) | Zero | Tax only on spouse’s personal assets plus $4M QTIP if over exemption |
| $30 million | $14M (maximum bypass) | $14M (defer tax) | $800K tax on remaining $2M | Tax on $14M QTIP plus spouse’s assets at second death |
| $50 million | $14M (maximum bypass) | $14M (defer tax) | $8.8M tax on $22M excess | Tax on $14M QTIP plus spouse’s assets at second death |
Disclaimer planning provides another form of post-death flexibility without requiring the will or trust to specifically authorize it. IRC Section 2518 allows a qualified disclaimer if the beneficiary refuses the inheritance within nine months of death, hasn’t accepted any benefit from the property, the property passes to someone other than the disclaimant (except by direction of the disclaimant), and the disclaimer is irrevocable and in writing. A surviving spouse can disclaim property that would pass to them outright, causing it to flow instead into a bypass trust for their benefit.
A will leaves $20 million outright to the surviving spouse, with a provision that any disclaimed property passes to a bypass trust for the spouse’s benefit. After the husband’s death, the widow evaluates her situation: she has $8 million of her own assets, and the estate is $20 million. If she keeps all $20 million, her estate will reach $28 million (plus growth), exceeding the combined exemption. She disclaims $13.99 million within nine months, causing it to pass into the bypass trust under the will’s terms. This uses the husband’s exemption, shelters the $13.99 million from tax at her death, and gives her access to the trust under HEMS standards.
How Income Tax Affects Bypass Trust Planning
Bypass trusts pay income tax as separate taxpayers under IRC Section 641, filing Form 1041 annually. Trust income tax rates reach the highest marginal rate (37%) at only $15,200 of taxable income in 2026, compared to individuals who don’t reach 37% until $626,350 for single filers. This compressed rate structure means trusts pay much higher income tax than individuals on the same income, making income tax planning critical for bypass trusts that hold income-producing assets.
IRC Section 661 allows trusts to deduct distributions to beneficiaries, and IRC Section 662 requires beneficiaries to include these distributions in their income. This creates the “conduit” rule—income distributed to the surviving spouse is taxed to the spouse at their rates, while income retained in the trust is taxed to the trust at trust rates. The trust’s distributable net income (DNI) determines how much of each distribution is taxable income versus tax-free return of principal.
A bypass trust earns $200,000 of interest and dividends in 2026. If the trustee distributes all $200,000 to the surviving spouse, the trust deducts $200,000 under IRC Section 661, pays zero income tax, and the spouse reports $200,000 of income on her Form 1040. If the trustee distributes only $50,000 and retains $150,000 in the trust, the trust deducts $50,000, pays income tax on $150,000 (approximately $55,000 in tax), and the spouse reports $50,000 of income. The trust paid $55,000 in tax that could have been avoided by distributing all income to the spouse.
| Trust Income | Amount Distributed | Trust’s Taxable Income | Trust’s Tax (37% Rate) | Spouse’s Taxable Income | Total Tax |
|—|—|—|—|—|
| $100,000 | $100,000 (all) | Zero | Zero | $100,000 | $24,000 (at spouse’s 24% rate) |
| $100,000 | $50,000 | $50,000 | $18,500 | $50,000 | $30,500 total ($18,500 trust + $12,000 spouse) |
| $100,000 | Zero | $100,000 | $37,000 | Zero | $37,000 (all trust tax) |
| $500,000 | $500,000 (all) | Zero | Zero | $500,000 | $170,000 (at spouse’s 35% rate) |
| $500,000 | Zero | $500,000 | $185,000 | Zero | $185,000 (all trust tax) |
The optimal strategy distributes all income to the surviving spouse annually, avoiding trust-level taxation. Most bypass trusts require distributing all income to the spouse anyway, consistent with giving the spouse the maximum benefit from trust assets without causing estate inclusion. The trust document should mandate annual income distributions rather than leaving this to trustee discretion, ensuring consistent tax planning.
IRC Section 643(e) allows trusts to distribute appreciated property and elect to recognize gain, effectively transferring the gain to the beneficiary rather than having the trust pay tax. If the bypass trust holds stock with $100,000 of built-in gain, the trustee can distribute the stock to the surviving spouse and elect under Section 643(e) to recognize the gain. The trust deducts the fair market value of the stock distributed, the spouse recognizes $100,000 of capital gain on her return (taxed at preferential rates up to 20%), and the trust avoids paying capital gains tax at trust rates (which also reach 20% but kick in at only $15,200 of gain).
Generation-Skipping Transfer Tax and Dynasty Trust Planning
The generation-skipping transfer tax (GST tax) imposes an additional 40% tax on transfers to grandchildren or more remote descendants. IRC Section 2601 levies the GST tax on “direct skips,” “taxable terminations,” and “taxable distributions” to skip persons (typically grandchildren or trusts for their benefit). The GST tax exists to prevent wealthy families from using trusts to skip estate tax at the children’s generation, instead passing assets directly from grandparents to grandchildren.
Each person has a GST exemption equal to their estate tax exemption ($13.99 million in 2026). IRC Section 2631 allows individuals to allocate this exemption to lifetime gifts or testamentary transfers to trusts that benefit multiple generations. Once property is protected by GST exemption allocation, the trust can benefit children, grandchildren, great-grandchildren, and further descendants without ever paying GST tax, no matter how many generations pass or how large the trust grows.
A properly structured bypass trust receives automatic GST exemption allocation under IRC Section 2632(c). The section provides that GST exemption automatically allocates to transfers at death that are “direct skips” or go to “GST trusts” (trusts where distributions could be made to skip persons). The executor can opt out of this automatic allocation on Form 706, but most executors allow it to apply because making the bypass trust GST-exempt creates a dynasty trust that benefits multiple generations tax-free.
| Trust Type | GST Exemption Used | Estate Tax at Children’s Generation | GST Tax at Grandchildren’s Level | Total Tax Savings (Dynasty vs Non-Dynasty) |
|—|—|—|—|
| Non-GST exempt bypass trust ($14M) | Zero exemption allocated | 40% on amounts over exemption | Additional 40% GST tax | Zero savings—pays both taxes |
| GST-exempt bypass trust ($14M) | $14M exemption allocated | Zero—not in children’s estates | Zero—protected by exemption | Saves 40% estate tax + 40% GST tax every generation |
| Dynasty trust ($14M for 3 generations) | $14M exemption allocated at creation | Skips all three generations | Zero GST tax all generations | Saves approximately 80% combined tax × 3 generations = $28M+ in tax savings |
Dynasty trusts in states with no rule against perpetuities can last 365 years (Delaware), 1,000 years (Wyoming), or forever (South Dakota, Alaska, Nevada). Delaware statute 25 Del. C. § 503 allows trusts to last for 110 years after creation, but additional statutory provisions effectively extend this to 365 years for GST-exempt trusts. Assets placed in a Delaware dynasty trust in 2026 won’t face estate tax or GST tax until 2391 at the earliest, allowing 10-12 generations to benefit from compound growth without taxation.
The math becomes dramatic over multiple generations. A $14 million GST-exempt bypass trust growing at 6% annually reaches $33 million in 15 years (generation 2), $77 million in 30 years (generation 3), and $180 million in 45 years (generation 4). Without GST protection, each generation faces 40% estate tax, consuming $13.2 million at generation 2, $30.8 million at generation 3, and $72 million at generation 4—total tax of $116 million. With GST protection, all generations pay zero estate tax, preserving the full $180 million for beneficiaries.
Do’s and Don’ts for Bypass Trust Planning
Do’s
Do coordinate bypass trust planning with the 2026 exemption sunset. The exemption drops from $13.99 million to approximately $7 million per person on January 1, 2026, unless Congress extends the higher exemption. Couples with estates between $14 million and $28 million need to model scenarios at both exemption levels to determine whether bypass trusts make sense. The optimal strategy may involve funding two bypass trusts—one at the state exemption level and one at the federal exemption level—to protect against both state and federal estate tax.
Do consider using lifetime gifts to fund irrevocable trusts instead of waiting until death to fund bypass trusts. IRC Section 2035(b) includes gifts made within three years of death back in the estate for certain purposes, but gifts of outright property or to irrevocable trusts don’t get pulled back. Making gifts while both spouses are alive removes appreciation from both estates, provides creditor protection during life, and allows you to see how beneficiaries handle inherited wealth before you die.
Do fund bypass trusts with assets that have high appreciation potential. Growth stocks, real estate likely to appreciate, business interests expected to increase in value, and intellectual property all work well in bypass trusts because appreciation occurs outside the surviving spouse’s estate. Assets that produce ordinary income but don’t appreciate (bonds, CDs, income-producing real estate) work better in QTIP trusts where income can be distributed to the spouse and the asset receives a second step-up in basis.
Do review and update bypass trust planning every three to five years. Changes in exemption amounts, family circumstances (divorce, remarriage, birth of grandchildren), asset values, state of residence, and tax law all affect whether bypass trust planning remains optimal. A plan designed in 2015 when the exemption was $5.45 million may no longer work in 2026 when the exemption is $13.99 million or in 2027 when it might drop back to $7 million.
Do consider naming an independent trustee rather than the surviving spouse as sole trustee. If the surviving spouse serves as sole trustee with unlimited discretion to distribute principal to themselves, the IRS could argue they hold a general power of appointment under IRC Section 2041, causing estate inclusion. An independent trustee (adult child, professional trustee, or family friend) eliminates this risk. Alternatively, name the spouse as co-trustee with an independent trustee, requiring both signatures for distributions above the HEMS standard.
Don’ts
Don’t assume portability replaces bypass trusts for all estates. Portability works well for estates under the combined exemption amount ($27.98 million in 2026) where simplicity outweighs tax savings, but fails to shelter appreciation and provides no creditor protection. Estates over $20 million benefit from bypass trusts even when portability is available because the tax savings on sheltered growth justifies the administrative cost and complexity. Calculate the present value of expected tax savings versus the present value of 20 years of trust administration costs to make the decision.
Don’t name the bypass trust as beneficiary of retirement accounts unless absolutely necessary. Retirement accounts carry built-in income tax liability, making them inefficient assets to shelter with estate tax exemption. IRC Section 408(d) requires distributions from inherited retirement accounts to be included in the recipient’s ordinary income, so using $2 million of exemption to shelter an IRA wastes exemption that could shelter $2 million of after-tax assets.
Don’t give the surviving spouse unlimited withdrawal rights over bypass trust principal. The five-or-five power limit under IRC Section 2041(b)(2) protects limited withdrawal rights, but exceeding this limit causes estate inclusion. Unlimited withdrawal rights create a general power of appointment, pulling the entire trust into the spouse’s estate and defeating the purpose of the bypass trust. Limit withdrawal rights to the greater of $5,000 or 5% of trust principal annually.
Don’t forget to allocate GST exemption to the bypass trust. Failing to allocate GST exemption means the trust will owe 40% GST tax when distributions eventually go to grandchildren or when the trust terminates for their benefit. IRC Section 2632(c) provides automatic allocation at death, but the executor can opt out by checking a box on Form 706. Never opt out unless you have a specific reason—keeping the trust GST-exempt provides enormous tax savings across multiple generations.
Don’t use bypass trusts in states with strong elective share rights without considering the surviving spouse’s statutory claims. States like Florida provide surviving spouses with elective share rights that may reach trust assets. Florida Statute Section 732.2035 includes certain trust assets in the elective estate, potentially giving the surviving spouse a claim against bypass trust assets. If the spouse elects against the estate and claims their statutory share, the bypass trust structure may be disrupted, causing unintended estate inclusion or loss of exemption.
Frequently Asked Questions
Can a surviving spouse serve as trustee of their own bypass trust?
Yes, but with significant restrictions. The spouse can serve as trustee only if their distribution powers are limited by an ascertainable HEMS standard, preventing general power appointment concerns.
Does remarriage of the surviving spouse affect the bypass trust?
No, remarriage doesn’t change the bypass trust’s tax status. However, the new spouse might gain rights to the surviving spouse’s personal assets through elective share laws or equitable distribution upon divorce.
Can you convert an existing bypass trust into a QTIP trust?
No, you cannot retroactively convert a bypass trust to QTIP after the estate tax return filing deadline expires. The QTIP election must be made on Form 706 within nine months plus extensions.
What happens if the bypass trust assets lose value?
Trust assets remain outside the surviving spouse’s estate regardless of value changes. Losses reduce the inheritance but don’t affect the estate tax exemption previously used or create new deduction opportunities.
Can creditors of the deceased spouse reach bypass trust assets?
Yes, creditors can pursue bypass trust assets because they’re part of the deceased spouse’s estate. The trust only protects assets from the surviving spouse’s creditors, not the deceased’s creditors.
Does the surviving spouse pay income tax on bypass trust income?
Yes, if the income is distributed to them. Trust income distributed to beneficiaries is taxable to the beneficiary under IRC Section 662, while retained income is taxed to the trust.
Can you fund a bypass trust with life insurance?
Yes, life insurance works well for bypass trusts, but requires proper beneficiary designation. The policy should be owned outside the estate or in an ILIT to avoid estate inclusion.
What happens to a bypass trust when the surviving spouse dies?
The trust terminates and distributes assets to remainder beneficiaries named by the deceased spouse. These assets pass outside the surviving spouse’s estate, avoiding estate tax at the second death.
Can the bypass trust make loans to the surviving spouse?
Yes, but only at adequate interest rates under IRC Section 7872. Below-market loans create imputed income and could violate HEMS standards, potentially causing estate inclusion under IRC Section 2036.
Does a bypass trust protect assets from long-term care costs?
Yes, bypass trust assets don’t belong to the surviving spouse, so they’re not counted for Medicaid eligibility under 42 U.S.C. § 1396p if the trust meets state-specific requirements.
Can you modify a bypass trust after it’s created?
Generally no, bypass trusts become irrevocable at the first spouse’s death. However, state law decanting statutes, non-judicial settlement agreements, or court reformation might allow limited modifications in some situations.
What if the estate turns out to be smaller than expected?
The bypass trust receives whatever assets were designated, even if the estate value decreased. This could result in underfunding the trust or leaving insufficient assets for the surviving spouse’s marital share.
Does the three-year lookback rule apply to bypass trust funding?
No, the three-year rule under IRC Section 2035 applies to gifts of life insurance and certain transfers with retained interests, but not to assets transferred at death to bypass trusts.
Can a bypass trust hold S corporation stock?
Yes, if structured properly under IRC Section 1361(c)(2). The trust must qualify as an eligible S corporation shareholder, typically through ESBT (electing small business trust) or QSST provisions.
What happens if you forget to fund the bypass trust?
The trust remains unfunded and provides no estate tax benefit. Assets that should have gone to the bypass trust pass according to the default provisions, typically to the surviving spouse outright.
Can the surviving spouse disclaim their interest in a bypass trust?
Yes, within nine months under IRC Section 2518, but this causes assets to pass to contingent beneficiaries and doesn’t let the spouse redirect assets to a different trust structure.
Does the bypass trust need its own tax identification number?
Yes, bypass trusts are separate taxpayers requiring a federal employer identification number (EIN) and must file Form 1041 annually, unlike revocable trusts during the grantor’s lifetime.
Can you use a bypass trust in a second marriage?
Yes, bypass trusts work particularly well in second marriages to ensure children from the first marriage inherit while providing for the second spouse during their lifetime without giving them ownership.
What if state estate tax exemption differs from federal?
Use separate state and federal bypass trusts. Fund the state bypass trust first up to the state exemption, then fund a federal bypass trust for the remaining federal exemption.
Can the bypass trust pay for the surviving spouse’s health insurance?
Yes, health insurance premiums qualify under the HEMS standard as health-related expenses. The trustee should approve payment directly to the insurance company or reimburse the spouse promptly.