Two requirements, not one. The rule bundles a deadline with a conditional overlay, and they are governed by different tests. The deadline — empty by December 31 of year ten — always applies. The annual withdrawals in years one through nine apply only if the original owner died on or after their required beginning date. If the owner died before it, a beneficiary may take nothing for nine years and withdraw everything in year ten, which is a meaningful planning lever. That test is often paraphrased as "whether the owner had already started taking required minimum distributions," and that paraphrase is wrong: the required beginning date is a specific date, and an owner can reach it without having yet taken a distribution, or take a voluntary withdrawal years before it. Because Roth IRA owners never have a required beginning date, they are always treated as dying before it — so the annual-withdrawal overlay never reaches an inherited Roth IRA at all.
There is one exception to that exception. A minor child of the account owner who has been taking life-expectancy distributions as an eligible designated beneficiary keeps taking annual distributions through the ten-year window after turning 21, regardless of the owner's required beginning date. The child is not switching to a clean ten-year deferral; they are keeping the annual schedule and gaining a deadline.
Who is outside the rule. Eligible designated beneficiaries — the surviving spouse, a minor child of the owner, someone disabled or chronically ill, and a beneficiary not more than ten years younger than the owner — use the life expectancy rule instead. Beneficiaries who are not individuals at all, such as an estate, a charity, or a trust that does not qualify as a see-through, are non-designated beneficiaries and never get ten years: they fall under the 5-year rule if the owner died before the required beginning date, or must spread distributions over the decedent's own remaining life expectancy — informally the "ghost" life expectancy — if the owner died on or after it. That second branch can actually be longer than ten years for an owner who died relatively young, which makes it one of the few situations where a non-designated beneficiary produces a slower payout than a designated one. That is a statement about the payout period only, and not a reason to name an estate: doing so also routes the account through probate, forecloses splitting it into separate inherited accounts for individual heirs, and can expose the income to compressed estate or trust tax rates.
What the clock does and does not measure. The ten years are calendar years, not a rolling anniversary period, and they run from the triggering event. A death in a given year means the account must be empty by December 31 ten years later. For a minor child, the trigger is the 21st birthday, so a child who inherits at age five keeps taking life-expectancy distributions until 21 and then has until the end of the year they turn 31. The rule reaches employer plan balances too — an inherited 401(k) or 403(b) is subject to it just as an inherited IRA is.
How live is it? The final regulations apply for calendar years beginning on or after January 1, 2025. Because the annual-withdrawal question was unsettled for several years, the IRS waived the excise tax for missed annual withdrawals for 2021 through 2024. The practical result is that 2025 was the first year in which a ten-year beneficiary's annual withdrawal was genuinely enforced, so a beneficiary who inherited early in the SECURE era may have a compliance history that looks inconsistent for entirely legitimate reasons.