Is a Roth Conversion a Good Way to Leave Heirs Tax-Free Money? (w/Examples) + FAQs

This article reflects federal rules as of June 2026 and covers tax year 2025, with 2026 changes noted. State rules vary and are addressed separately below. Tax law changes often — confirm current figures with the IRS or a licensed professional before you act.

Quick Answer

Yes — a Roth conversion can be one of the cleanest ways to leave heirs tax-free money. You pay income tax now, your heirs inherit the Roth and withdraw it tax-free, and the conversion shrinks your taxable estate. It works best when your heirs face higher tax rates than you.

A Roth conversion moves money from a traditional IRA or 401(k) into a Roth IRA. You pay ordinary income tax on the converted amount in the year you convert, but every dollar after that grows tax-free. When you die, your heirs inherit a Roth IRA, and their withdrawals are generally tax-free under federal rules. You have, in effect, prepaid your family’s tax bill at your rate instead of theirs.

The stakes are real because the old “stretch IRA” is gone. Most non-spouse heirs must now empty an inherited IRA within 10 years, and roughly one in three U.S. households owns a traditional IRA, so this decision touches millions of families. The timing matters too — convert in a low-income year, and you lock in a low tax rate forever.

🧮 How the conversion math works, with full dollar-by-dollar examples you can copy.
⏳ Why the SECURE Act 10-year rule makes a traditional IRA a tax bomb for your kids.
🏛️ How a conversion lowers your federal estate-tax exposure under the 2026 $15 million exemption.
🚫 The 5-year clock, IRMAA surcharges, and other traps that quietly erase your savings.
🗺️ Whether your state taxes the conversion — and which states give retirees a break.

What a Roth Conversion Actually Is

A Roth conversion is the act of moving pre-tax retirement money into an after-tax Roth account. Your traditional IRA holds money you never paid tax on, so every withdrawal is taxed as ordinary income. A Roth IRA holds money you have already paid tax on, so qualified withdrawals are tax-free for the rest of your life and your heirs’ lives.

When you convert, the IRS treats the converted amount as taxable income for that year. If you convert $100,000, that $100,000 gets stacked on top of your other income and taxed at your 2025 marginal rates. There is no 10% early-withdrawal penalty on a conversion itself, even before age 59½, as long as you move the money directly into the Roth and do not pull cash out.

The key idea for estate planning is simple. By paying the tax now, you remove a future liability from your heirs. A traditional IRA passes the tax bill to whoever inherits it; a Roth IRA passes a clean, tax-free asset. The consequence of not converting is that your children may inherit a large account and owe income tax on every dollar they pull out — often during their peak earning years.

A common misconception is that a Roth conversion is a withdrawal. It is not. You are not spending the money or losing access to it. You report it on Form 8606, pay the tax from other funds if you can, and the full balance keeps growing inside the Roth.

What you should do about it: if you hold a large traditional IRA and want to leave it to family, model a multi-year conversion plan before you turn 73, when required minimum distributions (RMDs) begin. Each year you wait past retirement but before RMDs is a prime conversion window.

Why the 10-Year Rule Changed Everything

The single biggest reason Roth conversions surged for estate planning is the death of the “stretch IRA.” Before 2020, an heir could stretch withdrawals from an inherited IRA over their entire life expectancy, spreading the tax over decades. The SECURE Act ended that for most non-spouse heirs.

Today, most non-spouse beneficiaries must empty an inherited IRA within 10 years of the original owner’s death. For a traditional IRA, that means your heirs must pull out — and pay income tax on — the entire balance inside a decade. If the account is large, those forced withdrawals can land in your child’s highest-earning years and push them into a higher bracket.

Starting in 2025, the rule got stricter. If the original owner had already reached RMD age at death, non-spouse heirs must also take annual RMDs in years one through nine, and still empty the account by year ten. Missing a required withdrawal can trigger a penalty of up to 25% of the amount you should have taken, reduced to 10% if you fix it within two years and file Form 5329.

Here is where the Roth shines. An inherited Roth IRA is still subject to the 10-year rule, but the withdrawals are tax-free, and no annual RMDs are required during those ten years. So your heir can leave the money invested, let it grow tax-free for a full decade, and take it all out in year ten with zero income tax.

A common misconception is that a Roth escapes the 10-year rule entirely. It does not. The account still must be emptied. What changes is the tax — and the freedom to delay withdrawals to maximize growth. What you should do: tell your heirs to withdraw the inherited Roth in year ten, not year one, to capture the most tax-free compounding.

How the Conversion Saves Your Heirs Money: A Worked Example

Money decisions deserve real numbers, so here is the math step by step. Meet Robert, age 65, married filing jointly, with $90,000 of taxable income in 2025 and a $400,000 traditional IRA he wants to leave to his daughter.

Robert’s $90,000 puts him in the 12% bracket for 2025, which runs up to $96,950 for joint filers, with the 22% bracket above that. His daughter is a 35-year-old surgeon earning $300,000, which places her in the 24% federal bracket today and likely higher in the future.

Suppose Robert converts $100,000 this year. The math works in layers:

The first $6,950 of the conversion fills the rest of his 12% bracket, costing $834 in tax.
The remaining $93,050 is taxed at 22%, costing $20,471.
Total conversion tax: about $21,305, an effective rate near 21.3%.

Now compare the two paths if Robert dies and his daughter inherits that $100,000 slice. If it stays a traditional IRA, she must withdraw it within 10 years and pay 24% — about $24,000 in tax — and probably more if her income rises. If Robert converts, she inherits a Roth and pays $0 on the withdrawals. By converting at his 21.3% rate instead of her 24% rate, Robert saves the family roughly $2,700 on this slice alone, and far more once you count a decade of tax-free growth.

The lesson: a conversion pays off whenever the heir’s future rate is equal to or higher than the owner’s rate today. Robert should consider converting more — perhaps filling his 22% bracket each year — as long as he avoids spiking into the 24% bracket or triggering Medicare surcharges.

How a Conversion Shrinks Your Taxable Estate

A Roth conversion does double duty: it cuts your heirs’ income tax and can lower your federal estate tax. When you pay the conversion tax from a separate taxable account, you move that cash out of your estate, reducing the total value the IRS can tax at death.

For 2025, the federal estate-tax exemption is $13.99 million per person, or $27.98 million per married couple. Under the One Big Beautiful Bill Act (OBBBA), that exemption rises to $15 million per person ($30 million per couple) starting January 1, 2026, and this increase is permanent and indexed for inflation. Amounts above the exemption are taxed at 40%.

Here is the subtle win. A $1 million traditional IRA in your estate is not really worth $1 million to your heirs, because they owe income tax on it. But the estate tax is calculated on the full $1 million anyway. By converting and paying the income tax from outside funds, you shrink the estate by the tax paid and hand over an asset with no embedded income-tax liability.

A common misconception is that estate tax affects everyone. It does not — under the 2026 rules, fewer than 1% of estates owe any federal estate tax. For most families, the real benefit of a conversion is the income-tax savings to heirs, not estate-tax savings. What you should do: if your estate is near or above $15 million, coordinate conversions with a qualified estate attorney and consider gifting or trust strategies alongside the conversion.

Which Situation Applies to You?

The right answer depends entirely on your facts. Use this guide to find the part that fits you, because one size never fits all in tax planning.

Your heirs earn more than you do now. Converting is usually a clear win — you lock in your lower rate and spare them their higher one.
Your heirs earn far less than you (or are in the 10–12% bracket). Converting may cost the family money; leaving a traditional IRA could be cheaper, since heirs in a lower bracket pay less.
You plan to leave the IRA to charity. Skip the conversion entirely — a charity pays no income tax on an inherited traditional IRA, so converting wastes money.
Your spouse is your beneficiary. A spouse can treat an inherited Roth as their own with no 10-year deadline, so the urgency is lower, but conversions still help the next generation.
You are retired but not yet 73. This is the golden window — your income is low and RMDs have not started, so conversions are cheapest.

Three Common Scenarios and Their Outcomes

Below are the three situations advisors see most often, each as a quick consequence table.

Scenario 1: Wealthy parent, high-earning kids

Your Move	What Your Heirs Get
Convert $100,000/year at your 24% rate before RMDs begin	A tax-free Roth they withdraw at 0%, instead of paying their own 32–37% rate
Leave it as a traditional IRA	A 10-year tax bomb taxed at their peak-career rate

Scenario 2: Middle-income retiree, modest kids

Your Move	What Your Heirs Get
Convert and pay 22% now	A tax-free Roth, but you may have overpaid if the kids are in the 12% bracket
Leave the traditional IRA	Heirs spread withdrawals over 10 years at their lower 12% rate, often cheaper for the family

Scenario 3: Charitable-minded retiree

Your Move	What Your Heirs Get
Convert, then leave the Roth to children	Tax-free money for kids, but you paid tax you did not have to
Leave the traditional IRA to a charity	The charity pays zero tax; the full pre-tax amount funds your cause

Named Examples: Seeing the Rule in Action

Maria, age 67, widowed, has $250,000 in a traditional IRA and $80,000 of income. Her two adult children are teachers in the 12% bracket. Maria runs the math and decides not to convert the full amount, because her kids’ future rate is lower than her 22% conversion rate. She converts only enough to fill her 12% bracket each year, blending the benefits.

James and Susan, both 64, have a combined $2 million in IRAs and a goal of leaving tax-free money to their daughter, a 28-year-old attorney climbing toward the 35% bracket. They execute a five-year conversion plan, converting about $200,000 a year while staying under the IRMAA cliff. By the time RMDs hit at 73, most of their money sits in a Roth, and their daughter inherits a tax-free account.

David, age 70, plans to leave his $300,000 IRA to his church. His advisor stops him before he converts, because a church owes no income tax on an inherited traditional IRA. David keeps the account traditional, names the church as beneficiary, and saves roughly $70,000 in needless conversion tax.

The Forms, the Five-Year Clock, and the Deadlines

Roth conversions run on paperwork and clocks, and missing either costs money. You report a conversion on Form 8606, Nondeductible IRAs, which you file with your Form 1040 for the year you convert. The deadline to do a conversion for a given tax year is December 31 — not April 15, unlike contributions.

The most misunderstood trap is the 5-year rule. For an heir’s withdrawal of earnings to be fully tax-free, the original owner’s first Roth must have been opened at least five years before death. If you die three years after opening your first Roth, your heir’s withdrawal of earnings during the first two years could be taxable, though the converted principal itself is always tax-free under the ordering rules.

The consequence of ignoring the clock is an avoidable tax bill on an account that was supposed to be tax-free. The fix is easy: open and fund even a small Roth IRA today to start your five-year clock ticking, so it is long satisfied by the time your heirs inherit.

A second cost is the IRMAA surcharge on Medicare. A large conversion raises your modified adjusted gross income (MAGI), and Medicare looks back two years to set premiums. For 2025, the IRMAA surcharges begin once joint MAGI tops $212,000, so a big one-year conversion can spike your Part B and Part D premiums two years later. What you should do: spread conversions across several years and watch the MAGI thresholds before you convert.

Federal vs. State: Does Your State Tax the Conversion?

Always separate federal from state, because they rarely match. Federally, a conversion is fully taxable income, and a qualified inherited Roth withdrawal is tax-free. Your state may treat both differently.

Most states with an income tax also tax the conversion as income in the year you convert, on top of the federal bill. So a resident of a high-tax state pays the state’s rate too. But nine states — including Florida, Texas, Tennessee, and Nevada — have no state income tax, meaning the conversion costs only the federal tax.

State Type	Conversion Tax Impact
No-income-tax states (FL, TX, NV, TN, WA, WY, SD, AK, NH)	Only federal tax applies — the cheapest place to convert
High-tax states (CA, NY, NJ, OR)	Federal tax plus state tax, sometimes adding 5–13% to the conversion cost

The strategy nuance: retirees who plan to relocate to a no-tax state should consider converting after they move, not before. A New York resident converting $200,000 before moving to Florida could owe several thousand dollars in avoidable New York tax. What you should do: confirm your state’s treatment with your state department of revenue, and time conversions around any planned move.

Pros and Cons of Converting for Heirs

Pros

Heirs inherit tax-free money, because you prepaid the tax at your rate.
It defuses the 10-year-rule tax bomb that hits traditional inherited IRAs.
Inherited Roths require no annual RMDs, so money compounds tax-free for a full decade.
A Roth has no lifetime RMDs for you, leaving more to grow for heirs.
Paying tax now with outside cash shrinks your taxable estate.

Cons

You owe a real tax bill today, which hurts if you lack outside funds to pay it.
It can backfire if your heirs are in a lower bracket than you.
A large conversion can trigger IRMAA Medicare surcharges two years later.
It wastes money if you intend to leave the IRA to a tax-exempt charity.
The 5-year clock can tax earnings if you convert and die too soon.

Do’s and Don’ts

Do convert in low-income years between retirement and age 73, when your rate is lowest.
Do pay the conversion tax from a taxable account, not from the IRA itself, to keep more in the Roth.
Do open a Roth early to start the 5-year clock well before your heirs inherit.
Do compare your bracket to your heirs’ expected bracket before converting.
Do spread conversions over several years to control your bracket and IRMAA.

Don’t

Don’t convert money you plan to leave to charity, because the charity pays no tax anyway.
Don’t convert so much that you jump two tax brackets in one year.
Don’t forget that an inherited Roth still must be emptied within 10 years.
Don’t ignore your state’s tax — it can erase part of the benefit.
Don’t skip Form 8606, or the IRS may tax the same dollars twice.

Seven Mistakes to Avoid

Converting when your heirs are in a lower bracket. You overpay tax the family did not owe.
Paying the conversion tax from the IRA itself. This shrinks the Roth and may trigger an early-withdrawal penalty if you are under 59½.
Doing one giant conversion in a single year. It can spike you into the 32–37% bracket and trigger IRMAA surcharges.
Ignoring the 5-year clock. Heirs may owe tax on earnings if you die before the clock runs out.
Forgetting the December 31 deadline. Conversions cannot be done retroactively after year-end like contributions can.
Converting before moving to a no-tax state. You pay avoidable state income tax on the conversion.
Assuming an inherited Roth has no withdrawal deadline. It still must be emptied in 10 years, so heirs must plan the timing.

What to Do Next

Pull your most recent traditional IRA and 401(k) statements and total the pre-tax balance.
Estimate your heirs’ likely future tax bracket versus your current bracket — this drives the whole decision.
Map out a multi-year conversion plan that fills your current bracket without spilling into the next one.
Open or confirm a Roth IRA now to start the 5-year clock, even with a small amount.
Run the IRMAA and state-tax numbers for each conversion year before you pull the trigger.
File Form 8606 for every conversion year, and keep the records permanently.
If your estate nears $15 million or your situation is complex, hire a CPA or estate attorney — expect to pay several hundred to a few thousand dollars, money well spent against a six-figure tax error.

This article is educational and not a substitute for personalized advice from a licensed CPA, tax attorney, or estate attorney for your specific situation.

Frequently Asked Questions

Is an inherited Roth IRA always tax-free?

Usually yes. Withdrawals from an inherited Roth IRA are generally tax-free if the original owner held any Roth for at least five years before death. If not, the earnings portion withdrawn early may be taxable, though contributions and conversions stay tax-free.

Do heirs have to empty an inherited Roth IRA?

Yes. Most non-spouse heirs must empty an inherited Roth within 10 years of the owner’s death. The good news: withdrawals are tax-free, and no annual RMDs are required during those years, so heirs can wait until year ten.

How much tax do I pay on a Roth conversion?

Your marginal income-tax rate applies to the converted amount for the year you convert. For 2025, that could be anywhere from 10% to 37% federally, depending on your total income, plus any state income tax.

When is the deadline to do a Roth conversion?

December 31 of the tax year. Unlike Roth contributions, which you can make until the April filing deadline, a conversion must be completed by year-end to count for that tax year.

Does a Roth conversion avoid the estate tax?

Partly. Paying the conversion tax from outside funds shrinks your taxable estate. For 2025 the federal estate exemption is $13.99 million, rising to $15 million in 2026, so most families owe no estate tax regardless.

Should I convert if my kids earn less than I do?

No, usually not. If your heirs sit in a lower bracket, leaving a traditional IRA can be cheaper for the family, since they pay tax at their lower rate over the 10-year window.

Can a spouse roll over an inherited Roth IRA?

Yes. A surviving spouse can treat an inherited Roth as their own, avoiding the 10-year rule entirely and keeping the money growing tax-free with no required distributions during their lifetime.

What is the 5-year rule on Roth conversions?

A five-year holding period before converted earnings come out tax-free. For heirs, what matters is whether the original owner first opened a Roth at least five years before death, which makes the whole account qualified.

Will a conversion raise my Medicare premiums?

Yes, it can. A large conversion raises your MAGI, and Medicare looks back two years to set IRMAA surcharges. For 2025, surcharges begin above $212,000 of joint income, so spread conversions out.

Should I convert before moving to a state with no income tax?

No. Wait until after you move. Converting while you still live in a taxed state adds state income tax to the bill, which you avoid by converting once you are a resident of a no-tax state.

Which IRS form reports a Roth conversion?

Form 8606 reports the conversion with your Form 1040 for the conversion year. Keep it permanently, because it tracks your basis and prevents the IRS from taxing the same dollars twice.

Does converting trigger a 10% early-withdrawal penalty?

No. A direct Roth conversion is not a withdrawal, so no 10% penalty applies even before age 59½, as long as you move the money straight into the Roth and do not pocket any cash.

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