Tax saving tips for estate planning with Roth conversions share one goal: turning a tax-deferred account your heirs would owe income tax on into a Roth IRA they can inherit income-tax-free. A Roth conversion lets you prepay the tax at your bracket today so your family keeps more of what you leave.
A Roth conversion supports estate planning by moving pre-tax IRA or 401(k) dollars into a Roth IRA, which heirs can inherit free of federal income tax after the 5-year rule is met. The owner takes no lifetime RMDs, the balance compounds longer, and prepaying the tax shifts the burden off heirs, though the Roth balance still counts in your taxable estate.
How do Roth conversions fit into estate planning?
A Roth conversion moves money from a pre-tax traditional IRA or 401(k) into a Roth IRA, and you pay ordinary income tax on the converted amount in that tax year. In estate planning, this turns an account heirs would owe income tax on into one they inherit income-tax-free. A 2026 conversion is uncapped, irreversible, and must be completed by December 31.
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Conversions are not the right move for every family, but for higher-net-worth retirees they can reshape how wealth passes to the next generation. The eight tips below explain how, followed by the costs to weigh and a plain-language FAQ.
1. Leaving heirs tax-free growth (5-year rule)
Heirs inherit a Roth IRA income-tax-free when the 5-year rule is met, meaning at least five tax years have passed since your first Roth contribution or conversion. Qualified distributions of both contributions and growth are free of federal income tax under IRS rules. A traditional IRA, by contrast, is taxed as ordinary income to whoever withdraws it.
This matters most when heirs are likely to be in a higher tax bracket than you are today. Converting shifts future growth into an account they can draw on without adding to their taxable income.
2. Skipping lifetime RMDs so assets compound longer
A Roth IRA owner never takes required minimum distributions during life. A traditional IRA owner must begin RMDs at age 73, or age 75 for those born in 1960 or later, whose first affected year is 2035. Skipping lifetime RMDs lets the full balance keep compounding untouched, so more can pass to heirs.
Because you are not forced to draw the account down, a Roth can sit and grow for the rest of your life. Our guide to required minimum distributions in 2026 covers the age thresholds and deadlines that apply to pre-tax accounts.
3. Easing the SECURE Act 10-year rule with tax-free distributions
The SECURE Act requires most non-spouse beneficiaries to empty an inherited IRA within 10 years of the owner’s death. For a traditional IRA that means up to 10 years of taxable withdrawals. Roth distributions are income-tax-free, so heirs can let the inherited Roth grow and take the full balance by year 10 with no income tax.
Under the 2024 final regulations, an inherited Roth IRA is treated as if the owner died before their required beginning date, so heirs owe no annual RMDs in years one through nine, only the year-10 deadline. An inherited traditional IRA can owe annual RMDs during those years when the original owner had already started taking them.
| Feature for heirs | Inherited traditional IRA | Inherited Roth IRA |
|---|---|---|
| Income tax on withdrawals | Taxed as ordinary income | Income-tax-free (5-year rule met) |
| Lifetime RMDs for the original owner | Yes, from age 73 or 75 | None |
| SECURE Act 10-year deadline | Applies to most non-spouse heirs | Applies to most non-spouse heirs |
| Annual RMDs within the 10 years | Possible if owner had begun RMDs | None; only the year-10 deadline |
| Surviving spouse option | Rollover to own IRA | Rollover to own Roth IRA |
| Counted in your taxable estate | Yes | Yes |
4. Shifting the tax burden from heirs to yourself
A Roth conversion lets you pay the income tax now, at your bracket, instead of leaving heirs to pay at theirs. If you sit in the 24% bracket (2026 taxable income up to $201,775 single or $403,550 married filing jointly) and your heirs would inherit during peak earning years at 32% or 35%, prepaying can lower the family’s combined tax.
The decision often turns on bracket arbitrage: your rate today versus your heirs’ expected rate later. Our note on how much to convert to a Roth walks through filling a bracket without overshooting into the next one.
5. Shrinking the taxable estate by paying the conversion tax from outside funds
Paying the conversion tax from a taxable brokerage or savings account, rather than from the IRA itself, removes those dollars from your estate while keeping the full converted balance inside the tax-free Roth. Every dollar of tax you prepay from outside funds is a dollar that leaves your estate, which can matter for families near a state or federal estate-tax threshold.
But is the Roth still counted in my estate?
Yes. The Roth IRA balance is still included in your gross taxable estate at death; a conversion does not remove the account from your estate. What shrinks the estate is the income tax you prepay, which reduces your other assets. For 2026 the federal estate-tax exemption is $15,000,000 per person, so federal estate tax reaches only large or state-taxed estates.
This is the nuance many guides skip. If your aim is reducing the estate itself, our companion piece on how Roth conversions reduce your taxable estate focuses on the estate-tax math rather than the income-tax tips here.
6. Giving a surviving spouse a simple, tax-free rollover
A surviving spouse can roll an inherited Roth IRA into their own Roth IRA. The spouse then owes no income tax on qualified withdrawals and faces no lifetime RMDs, so the account keeps compounding. This spousal rollover option is not available to non-spouse heirs, who remain bound by the SECURE Act 10-year rule.
7. Pairing Roth conversions with charitable giving (IRAs to charity, Roth to heirs)
Because a charity pays no income tax, leaving a pre-tax traditional IRA to charity and the Roth IRA to family is often a tax-efficient split. The charity receives the full pre-tax balance untaxed, while your heirs receive Roth dollars income-tax-free. Investors age 70.5 or older can also make a qualified charitable distribution (QCD) from an IRA during life.
A QCD must come directly from an IRA, not a 401(k), and it counts toward an RMD without adding to taxable income. Matching the right asset to the right recipient can lower the total tax paid across your estate and your gifts.
8. Weighing the costs: brackets, IRMAA, and the 2026 estate-tax exemption
A conversion is taxable ordinary income, so it can push you into a higher bracket, trigger a Medicare IRMAA surcharge, or stack with other taxes. IRMAA applies above $109,000 single or $218,000 joint MAGI on a two-year lookback; the 2026 standard Part B premium is $202.90. A conversion is not itself net investment income, but it can raise MAGI for the 3.8% surtax.
Timing matters. A conversion is irreversible, must be finished by the December 31 deadline, and cannot convert an RMD. Higher MAGI can also expose more of your income to the net investment income tax in the same year, so many investors model the full-year picture before converting.
When a Roth conversion is the wrong estate move
A Roth conversion may not help your estate if you expect to be in a lower bracket than your heirs, if you would have to pay the conversion tax from the IRA itself, if you are inside the two-year Medicare IRMAA lookback where a surcharge would apply, or if you already plan to leave pre-tax accounts to charity. In those cases prepaying tax can cost more than it saves.
Before committing, many investors run a Roth conversion break-even analysis to see how long the tax-free growth needs to run to justify the upfront tax. The answer depends on your bracket, your heirs’ expected bracket, and where the tax dollars come from.
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Q3 Advisors is a registered investment adviser focused on retirement tax planning. This page is educational and is not advice; consult a qualified professional.
Frequently asked questions
Do heirs pay taxes on an inherited Roth IRA?
Heirs generally do not pay federal income tax on qualified distributions from an inherited Roth IRA, as long as the 5-year rule was met before the owner’s death. They must still empty the account under the SECURE Act 10-year rule, but those withdrawals stay income-tax-free. The Roth balance can, however, count toward the owner’s taxable estate.
Does a Roth conversion reduce your taxable estate?
A Roth conversion does not remove the account from your taxable estate; the Roth balance is still included at death. What reduces the estate is the income tax you prepay, which shrinks your other assets. For 2026 the federal estate-tax exemption is $15,000,000 per person, so this matters mainly for large or state-taxed estates.
Can you convert an inherited IRA to a Roth IRA?
No. A non-spouse beneficiary cannot convert an inherited IRA to a Roth IRA under IRS rules; only the original owner, or a surviving spouse who has rolled the account into their own IRA, can convert. Non-spouse heirs must instead follow the SECURE Act 10-year distribution rule for the inherited account as it stands.
How does the 10-year rule affect inherited Roth IRAs?
The SECURE Act 10-year rule requires most non-spouse heirs to empty an inherited Roth IRA within 10 years of the owner’s death. Because an inherited Roth is treated as if the owner died before their required beginning date, no annual RMDs apply in years one through nine. Heirs can let it grow and withdraw the full balance income-tax-free by year 10.
Is a Roth conversion a good way to leave heirs tax-free money?
For many higher-net-worth families it can be, because a Roth IRA passes to heirs free of federal income tax while a traditional IRA does not. A conversion may make more sense when you are in a lower bracket than your heirs and can pay the tax from outside funds. It is less attractive when your bracket is higher or IRMAA would spike.
What is the 5-year rule on an inherited Roth IRA?
The 5-year rule requires that at least five tax years have passed since the owner’s first Roth contribution or conversion for earnings to come out income-tax-free. The clock starts with the owner, not the heir, so a long-held Roth is usually already qualified. Contributions and converted amounts can generally come out tax-free before growth does.
