Convert $300,000 to a Roth Across the Gap Years and Die at 82, and the Daughter Who Inherits It Has Ten Years to Empty It, Every Dollar Tax-Free. Leave It in the IRA and the Same Ten Years Come With a Tax Bill at Her Rate

A retiree with $300,000 in a pre-tax IRA faces a choice often framed as a retirement decision. It works more like an inheritance decision. Converting that money to a Roth account during the gap years (the stretch between leaving work and the age when required minimum distributions begin) changes who pays the income tax on it and at what rate.

Under current law, the required distribution age is 73 for most retirees today. It rises to 75 for younger ones. Those years are often the lowest-income years of adulthood because paychecks have stopped and forced withdrawals haven’t started.

Who Actually Faces This Decision

The caveat here is that this situation mainly applies to households that have built up significant savings. Bureau of Economic Analysis data puts per-capita disposable personal income at $69,922 in the second quarter of 2026. The personal savings rate was 4.4%, down from 6.9% in the first quarter of 2024. Most households don’t have a six-figure IRA. However, for the households that do, the 10-year rule determines how they pay the tax.

Same Ten Years, Very Different Tax Bills

When an IRA owner dies after 2019, most non-spouse heirs must withdraw all the funds by the end of the 10th year after the death, according to IRS Publication 590-B. The law allows longer payout periods only for eligible designated beneficiaries, such as a surviving spouse or a disabled heir. A healthy adult daughter does not qualify, so the clock runs for her whether she inherits a Roth or a pre-tax IRA.

What changes is the cost of each withdrawal. Roth distributions paid to a beneficiary after the owner’s death count as qualified distributions and are not taxable, as long as the account has passed its five-year holding period. A conversion done in the parent’s mid-60s clears that window long before a death at 82, so every dollar the daughter withdraws is tax-free.

An inherited traditional IRA works the other way because each withdrawal is ordinary income added to her salary. If she splits the balance into ten equal withdrawals, her income rises by $30,000 a year. For a single filer, the 2025 IRS brackets apply a 24% rate to taxable income between $103,351 and $197,300.

If she is already in that bracket, each $30,000 withdrawal costs about $7,200 in federal tax, totaling roughly $72,000 over the decade. If her income is higher and the withdrawals are taxed at 32%, the total rises toward $96,000. Both figures exclude investment growth and state income tax, and either would widen the gap.

Annual Withdrawals Take Away Her Flexibility

The rules on when she must withdraw widen the gap. Final IRS regulations took effect for distribution years starting January 1, 2025. Under them, an heir whose parent died after the required beginning date must take a distribution every year from year one through year nine, then empty the balance in year ten. If the parent dies at 82, they are well past that date, so the daughter can’t wait for a low-income year to make her traditional IRA withdrawals.

A Roth IRA avoids that requirement. Treasury regulations treat a Roth owner as having died before the required beginning date, so the heir has no annual minimums. She can keep the inherited Roth invested for nearly the full decade and withdraw everything, growth included, in year ten.

Moving the Tax Bill to the Parent’s Lower Bracket

A conversion moves the tax from the daughter to the parent. The converted amount counts as gross income, and the 10% early-withdrawal penalty doesn’t apply. Spread $300,000 equally over five gap years, and it adds $60,000 to income each year. Those quiet years between the last salary and the first mandatory withdrawal may be the lowest-rate window the parents ever see again, which is the whole subject of our free Roth conversion guide.

Under the same IRS brackets, for a married couple filing jointly, the 12% bracket covers taxable income up to $96,950, and the 22% bracket runs up to $206,700. Taxed at 12%, the full conversion costs $36,000, which is $36,000 less than the daughter would pay at 24%.

Even at 22%, the parents pay $66,000. That is $6,000 less than her lower-bracket case and $30,000 less than her higher-bracket case. The savings come entirely from the difference between the parents’ retirement rate and the daughter’s rate during her peak earning years.

Where the Math Stops Working

The advantage goes away when the rates reverse. If the heir is in the 12% bracket, or inherits during a year with little other income, the parent gains little by prepaying the tax at 22%. Extra income from a conversion can also push up Medicare premiums and make more of the parents’ Social Security benefits taxable. Paying the conversion tax out of the IRA itself shrinks the Roth that eventually passes to the heir.

For households considering this move, the analysis involves three steps:

• Compare the expected tax bracket for each gap year with the bracket the heir is likely to be in during her peak earning years.
• Size each year’s conversion to fill the 12% or 22% bracket without crossing into the next one.
• Pay the conversion tax from a taxable account, so every converted dollar keeps growing tax-free.

A gap-year conversion decides which generation’s tax bracket the money passes through. If the parents’ rate is lower, the family keeps the difference. If the rates are reversed, leaving the money in the traditional IRA is cheaper.

Contact [email protected] for any questions or corrections.