Inherited IRA 10-year rule — the post-SECURE deep dive.

For decades, non-spouse beneficiaries of inherited IRAs could stretch distributions over their own life expectancy — a strategy that quietly produced enormous lifetime tax efficiency by spreading withdrawals over 30+ years at relatively low brackets. The SECURE Act (December 2019) ended that for most non-spouse beneficiaries. Under the new default rule, inherited IRA balances must be fully distributed within ten years of the original owner's death. After years of regulatory ambiguity, the IRS confirmed in 2024 that annual RMDs are required during the 10-year window when the original owner died after their required-beginning-date (RBD), restoring penalties starting in 2025. This deep dive covers who falls under the rule, who's exempt, the planning toolkit, and the moves that can compress the total tax cost.

Who falls under the 10-year rule — and who doesn't

The 10-year rule applies to most non-spouse, non-eligible-designated-beneficiary (non-EDB) recipients of inherited retirement accounts. That includes adult children of the deceased, most grandchildren, most siblings, most friends, most trusts named as beneficiaries, and estates. It does not apply to five categories of Eligible Designated Beneficiaries (EDBs) — surviving spouses, minor children of the deceased (until age of majority), disabled individuals, chronically-ill individuals, and individuals not more than 10 years younger than the deceased (typically siblings of similar age). EDBs can still use a lifetime-stretch payout based on their own life expectancy. Most adult children inheriting from a parent fall under the 10-year rule.

The annual-RMD-during-the-window question — finally resolved

When the SECURE Act passed, an ambiguity arose: did the 10-year rule require RMDs each year during the window, or could the beneficiary defer the entire balance to year 10? IRS regulations clarified in 2022 (and finalized in 2024): if the original owner died on or after their required-beginning-date (the date their own RMDs were required to start, typically 73 or 75 under SECURE 2.0), annual RMDs are required to the beneficiary during years 1–9 of the window, with the remainder distributed by the end of year 10. If the original owner died before their required-beginning-date, no annual RMDs during the window — full distribution can happen any time before year 10. The IRS waived the missed-RMD penalty for tax years 2021–2024 because of the regulatory uncertainty; the penalty is fully active starting in 2025.

Why the annual-RMD requirement matters

The required-annual-RMD scenario is the more common one (since most parents die after their own RBD), and the requirement shapes planning. The beneficiary cannot let the entire balance grow tax-deferred for 9 years and then take it all in year 10 — that would generate a missed-RMD penalty for each missed year and likely a punitive single-year tax bracket in year 10 anyway. Instead, distributions must be coordinated each year, with the total distributed by the end of year 10. The annual amount during years 1–9 is based on the IRS Single Life Expectancy Table starting in the year after death; year 10 takes whatever remains.

The five EDB carve-outs — and the planning that flows from each

1. Surviving spouse: can elect spousal rollover into their own IRA (treats the inherited account as their own), or stay with inherited IRA treatment, or remain as beneficiary. Each option has tradeoffs around RMD timing, 10% penalty avoidance, and beneficiary-of-beneficiary outcomes. 2. Minor child of the deceased: the 10-year clock doesn't begin until the child reaches the age of majority (21 in many states; uses state-by-state definitions). For young children, this can effectively double the planning window. 3. Disabled or chronically-ill individuals: lifetime stretch applies; the qualifying definitions are specific (Social Security disability definition for disabled; cannot perform 2+ ADLs for chronically ill). 4. Individuals not more than 10 years younger than the deceased: lifetime stretch applies; common for sibling inheritance. 5. Certain see-through trusts holding for EDBs.

Spouse-specific paths

Surviving spouses get three meaningful options: (a) spousal rollover — treat the inherited IRA as your own, using your own RMD schedule based on your age, avoiding the 10-year rule entirely; (b) remain as beneficiary IRA — useful if the surviving spouse is under 59½ and needs penalty-free access to funds; (c) treat the inherited IRA as a beneficiary IRA with the 10-year rule (rarely advantageous). The spousal rollover is usually optimal for surviving spouses 59½ or older. For surviving spouses under 59½ who may need penalty-free withdrawals, staying with the inherited IRA preserves access; you can do the rollover later when penalty exposure is no longer a concern. The choice can also affect when RMDs begin if the deceased spouse was older — using your own RMD timing rather than the deceased's can defer distributions.

Roth inherited IRAs — same 10-year rule, different math

Inherited Roth IRAs also fall under the 10-year rule, but with crucial differences: there's no annual RMD during the window (because the original owner had no lifetime RMDs on the Roth), and qualified distributions are fully tax-free. The optimal strategy with an inherited Roth is usually to leave it untouched for the full 10 years, letting the balance grow tax-free, then take everything in year 10 (or in years where the tax-free distribution helps with other planning, like a year of high spending). The optimal strategy with an inherited traditional IRA is usually the opposite — start distributions early to spread the tax bill across years, and avoid stacking a large distribution in year 10.

Planning moves to compress the tax bill

For an adult child inheriting a traditional IRA, the default behavior — take the annual RMD minimum each year, take whatever remains in year 10 — often creates the largest possible tax bill, because the year-10 balloon distribution typically falls in a high-income year (peak career earnings). Better approaches: front-load distributions in years when the beneficiary's other taxable income is lowest (gap years, sabbaticals, business-investment losses, low-bonus years); coordinate with the beneficiary's Roth conversion windows to avoid double-stacking conversions and inherited-IRA income; consider increasing 401(k) contributions during high-distribution years to partially offset; consider charitable bunching via donor-advised fund in high-distribution years; pre-fund QCDs once the beneficiary reaches 70½. The right approach depends on the beneficiary's own income profile across the 10-year window.

When the parent is still alive — pre-death planning

For parents wanting to minimize the inherited-IRA tax cost on their children, several moves matter while alive: (a) consider Roth conversions during retirement — converting now at the parent's brackets is often better than leaving the conversion to children at their working-year brackets and within a compressed 10-year window; (b) name multiple beneficiaries to spread the tax burden across multiple individuals' brackets; (c) consider charitable beneficiary designations for a portion of the IRA — charities receive IRAs tax-free, while heirs pay ordinary income on every dollar; (d) use the IRA for QCDs during life and direct cash to heirs through other estate vehicles. The post-SECURE math has shifted the calculus meaningfully — Roth conversions during the parent's lifetime are more attractive now than they were under the lifetime-stretch regime.

Multiple beneficiaries — the importance of separate accounts by year 1

When multiple beneficiaries inherit a single IRA, separate accounts should be established for each by December 31 of the year following death. Otherwise, the RMD calculation defaults to the oldest beneficiary's life expectancy — which can shorten the payout for younger beneficiaries. Separate accounts also allow each beneficiary to manage distribution timing independently based on their own income situation. This is one of the most common administrative mistakes in inherited-IRA situations; the cost of missing the deadline is real and not reversible after the fact.

Trusts as beneficiaries — the 'see-through' requirement

A properly-drafted 'see-through' trust can qualify as a designated beneficiary, allowing the trust to use the 10-year rule (or EDB rules if all beneficiaries are EDBs). The trust must meet specific requirements: it must be valid under state law, irrevocable upon the IRA owner's death, identify beneficiaries from the trust instrument, and be provided to the IRA custodian by October 31 of the year following death. Failed see-through compliance can collapse the payout to 5 years (if no designated beneficiary). For families using trusts as IRA beneficiaries — common when beneficiaries are minors, have creditor concerns, or have special needs — careful drafting and timely documentation are essential.

The first 60 days — what to do as a new beneficiary

Within 60 days of becoming aware of the inheritance: (1) confirm the date of death and the original owner's RBD status; (2) obtain a death certificate and the IRA custodian's beneficiary-claim package; (3) confirm beneficiary designation against what the IRA actually holds (a primary beneficiary still listed on paper but predeceased may complicate matters); (4) request a separate inherited IRA account in your name (not commingled with your own IRA — that's a disqualifying mistake); (5) review your own tax situation for the current year and the upcoming 10 years to plan distribution timing; (6) coordinate with siblings or co-beneficiaries on the separate-account deadline; (7) decide whether to take an immediate distribution or defer to a more advantageous year. The custodian's default — start RMDs at the minimum — is usually not the right answer.

What this looks like in practice

For most adult children inheriting a parent's IRA, the planning conversation involves modeling distributions across the 10-year window against the beneficiary's own income, Roth conversion windows, and likely future tax brackets. A common pattern: front-load distributions in years 1–3 if the beneficiary has a low-income window (early retirement, sabbatical, between jobs); steady distributions in years 4–7 at moderate income; smaller distributions in years 8–10 if the beneficiary's income has risen. The total 10-year tax bill is often 15–30% lower than the default-RMD-then-balloon approach. The 10-year-rule math is one of the more impactful planning moves available to households inheriting six-figure or seven-figure IRAs.