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 have to empty the account by December 31 of the tenth calendar year following the original owner’s death. If the original owner died before the required beginning date, the beneficiary can take nothing in years one through nine and settle the account in a single move at the end of year ten. The rule permits nine years of tax-deferred compounding, though the deferred tax liability accrues alongside the account balance.

Consider a hypothetical heir who inherited a $300,000 traditional IRA and left it untouched for the following nine years. The account compounds tax-deferred inside the wrapper, which is what makes the strategy appealing. What compounds along with it 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 across three or four decades. Under the current framework, the account must be fully depleted within a decade, and distributions from a traditional inherited IRA are taxed as ordinary income to the beneficiary in the year they are 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), disabled or chronically ill heirs, and beneficiaries less than ten years younger than the deceased. Everyone else sits on the ten-year clock, which includes most adult heirs.

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. But that deferral comes with a catch. Every dollar of growth turns into ordinary income the moment you finally take it out. A single distribution large enough to empty that compounded balance can easily push a middle‑income beneficiary into the 32% or even 35% federal bracket for that year, and that does not include state taxes if your state has an income tax.

You can measure the downside of playing it too safe inside the account against what plain vanilla savings vehicles are paying. On August 18, 2026, the 10‑year Treasury yielded 4.71%. As of August 1, the FDIC’s national average for a 12‑month certificate of deposit sat at just 1.71%. Both numbers represent what a conservative cash position would have earned. And both fall well short of what an equity‑heavy IRA might have returned over the same nine‑year stretch.

Year-Ten Reckoning

Imagine a $300,000 balance that roughly doubles while it sits in the account. That becomes $600,000 in ordinary income, and if the beneficiary pulls it all out in one year, every dollar of that growth gets reported on a single tax return. In 2026, the highest federal bracket sits at 37% for taxable income above about $626,350 for single filers, which means a large portion of that lump sum could end up taxed at the top rate the beneficiary has ever paid.

Consumer advocate Clark Howard does not mince words on this topic. He calls a traditional IRA an ugly asset to pass on, especially when you stack it against a Roth IRA. His logic is straightforward. Withdrawals from a traditional IRA are taxed as ordinary income, plain and simple. An inherited taxable brokerage account, on the other hand, benefits from preferential capital gains rates and gets a step‑up in cost basis at death, which can wipe out or significantly shrink the tax liability for whoever receives it.

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. Beneficiaries who wait until year ten sacrifice that flexibility for a few additional years of tax-deferred compounding (the same first-year tax shock we walked through 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.

Practical Points for Heirs Facing the Same Choice

The ten-year rule is administered with limited flexibility. 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, which can drop 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 surface in planning conversations.

For the hypothetical heir who let her $300,000 grow untouched, the account has done 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, taxed at ordinary income rates.

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