She Inherited a $300,000 IRA and Let It Grow Untouched for Nine Years, Exactly What the IRS Was Hoping For

Rules for inherited traditional IRAs changed for deaths occurring after December 31, 2019. Under the SECURE Act, most non-spouse beneficiaries must empty the account by December 31 of the tenth calendar year following the original owner’s death. Whether a beneficiary can wait all nine years before pulling a single dollar depends on one critical detail: when the original owner died relative to their Required Beginning Date. If the owner passed away before that date, the heir can take nothing in years one through nine and clear the account in year ten. If the owner died on or after their Required Beginning Date, IRS final regulations issued in July 2024 and enforced starting in 2025 require annual distributions throughout the nine-year window as well. Either way, the rule permits years of tax-deferred compounding, and the deferred tax liability grows right alongside the balance.

Consider a hypothetical heir who inherited a $300,000 traditional IRA and left it untouched for the following nine years (assuming the original owner had not yet reached their Required Beginning Date). The account compounds tax-deferred inside the wrapper, which is what makes the strategy appealing. What compounds alongside the balance is the eventual tax bill.

How the Ten-Year Rule Actually Works

The SECURE Act, passed in December 2019, eliminated the “stretch IRA” for most non-spouse beneficiaries. Before the change, an heir could spread distributions across their own life expectancy, often three or four decades. Under the current framework, the account must be fully depleted within a decade, and every dollar distributed from a traditional inherited IRA is taxed as ordinary income in the year it is taken.

A narrow group of “eligible designated beneficiaries” remains exempt from the ten-year rule: surviving spouses, minor children of the original owner (until they reach majority, after which the ten-year clock begins), disabled or chronically ill heirs, and beneficiaries less than ten years younger than the deceased. Everyone else is on the ten-year clock, which captures most adult heirs.

One additional wrinkle worth knowing: when the original owner had already started required minimum distributions before death, the heir cannot simply let the account sit. The IRS final regulations, published in July 2024 and in effect since 2025, require those beneficiaries to continue taking annual distributions calculated on the beneficiary’s own life expectancy throughout years one through nine, while still emptying the account by the end of year ten.

Why Delaying Withdrawals Suits the Treasury

Leave a traditional IRA untouched for nine years and the balance grows without any annual tax bite along the way. The catch is that every dollar of that growth converts into ordinary income the moment it comes out. A single distribution large enough to empty a compounded balance can push a middle-income beneficiary into the 32% or even 35% federal bracket for that one filing year, and that figure excludes state taxes for residents of states with their own income tax.

Context matters here. As of late September 2026, the 10-year Treasury yield had climbed to roughly 5.2%, its highest level in nearly two decades, driven by sticky inflation and heavy government bond issuance. The FDIC’s national average for a 12-month certificate of deposit stood at 1.73% as of September 21, 2026. Both figures represent what a conservative cash position outside the IRA could have earned during the wait. Neither comes close to what an equity-heavy IRA can reasonably produce over a nine-year stretch, which is precisely why the math still favors staying inside the tax-deferred wrapper, even knowing the bill that waits at the end.

Year-Ten Reckoning

Imagine the $300,000 balance roughly doubles over nine years. That produces $600,000 of ordinary income, and if the beneficiary pulls it all out in a single year, every dollar of that growth lands on one tax return. In 2026, the top federal bracket of 37% applies to taxable income above $640,600 for single filers, meaning a large portion of a lump-sum distribution from a compounded inherited IRA could end up taxed at the highest rate the beneficiary has ever paid.

Consumer advocate Clark Howard has been direct on this point. He describes a traditional IRA as an unfavorable asset to pass on compared with a Roth, where qualified withdrawals are tax-free for the heir. A taxable brokerage account offers a different kind of relief: assets receive a step-up in cost basis at death, which can sharply reduce or eliminate the capital gains exposure for whoever inherits them. Those alternatives are worth weighing while the original account owner is still alive and can make changes.

What the Rule Rewards and Punishes

Beneficiaries who spread withdrawals across the full ten-year window can often keep each year’s distribution inside a lower marginal bracket. Those who wait until year ten trade that flexibility for a few additional years of tax-deferred compounding, the same dynamic explored in a free guide on defusing the pre-tax bomb. Which approach produces more after-tax wealth depends on the beneficiary’s other income, expected career trajectory, filing status, state of residence, and the direction of federal tax rates during the withdrawal window. None of those variables are known in advance, which is why the math is rarely clean.

Practical Points for Heirs Facing the Same Choice

The ten-year rule allows limited flexibility once the clock starts. Missing the December 31 deadline of the tenth year exposes the remaining balance to a 25% excise tax on the amount that should have been withdrawn, a penalty that can fall to 10% if corrected promptly under SECURE 2.0. Bracket-aware withdrawals during lower-income years, partial Roth conversions of the original owner’s account before death, and disclaiming a portion of the inheritance in favor of a lower-earning heir are all options that come up in planning conversations.

For the hypothetical heir who let her $300,000 grow untouched, the account has done exactly what tax-deferred vehicles do best. What remains is a single filing year in which the IRS collects on nearly a decade of compounded gains, all taxed at ordinary income rates.

Editor’s note: This article has been updated to reflect 2026 federal tax bracket thresholds (the 37% rate for single filers now begins above $640,600, not $626,350), the most current FDIC national average for a 12-month CD (1.73% as of September 21, 2026), the 10-year Treasury yield near 5.2% as of late September 2026, and the IRS July 2024 final regulations requiring annual RMDs in years 1 through 9 when the original IRA owner died on or after their Required Beginning Date.

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