Inherited IRA 10-Year Rule: Annual Withdrawal vs. Back-Loaded Strategy on a $500K Account

The SECURE Act killed the stretch IRA — and created a 10-year tax bomb

Before 2020, a non-spouse beneficiary who inherited an IRA could stretch required minimum distributions over their own life expectancy. A 35-year-old inheriting a $500,000 IRA could take roughly $10,500/yr for 47 years — barely a blip on their tax return. The SECURE Act of 2019 (IRC § 401(a)(9)(H)) replaced that with a hard deadline: empty the account within 10 years of the owner’s death.

That $500,000 now has to come out in a compressed window. Every dollar withdrawn from a traditional IRA is ordinary income, stacked on top of your salary. The only question is when you withdraw it — and the difference between a smart withdrawal schedule and a lazy one is $50,000–$65,000 in federal tax on a $500K account.

Who the 10-year rule applies to — and who escapes it

The 10-year depletion rule applies to every non-eligible designated beneficiary who inherits an IRA from someone who died after December 31, 2019. In practice, that means most adult children, siblings, friends, and non-spouse partners.

Five categories of Eligible Designated Beneficiaries (EDBs) can still stretch over life expectancy:

1. Surviving spouse — can also roll the inherited IRA into their own IRA
2. Minor child of the account owner (not grandchild) — stretches until majority, then the 10-year clock starts
3. Disabled individual under IRC § 72(m)(7)
4. Chronically ill individual
5. Beneficiary not more than 10 years younger than the deceased owner

If you don’t fall into one of those five categories, you’re on the 10-year clock. No exceptions.

The 2024 IRS ruling: annual RMDs are NOT required for most beneficiaries

This is the part most people get wrong — including many financial advisors. Between 2020 and 2024, the IRS issued conflicting guidance about whether non-spouse beneficiaries had to take annual distributions within the 10-year window or could simply drain the account by year 10 in any pattern they chose.

The 2024 final regulations (26 CFR § 1.401(a)(9)-5) settled it. The rule hinges on a single question: had the original IRA owner reached their Required Beginning Date (RBD) before they died?

The RBD under SECURE 2.0 § 107 is April 1 of the year after the owner turns 73 (born 1951–1959) or 75 (born 1960+). If your parent died at 68, they were before their RBD — you have full flexibility. If they died at 78 and had been taking RMDs for five years, you must continue annual distributions and empty the account by year 10.

Why this matters for strategy: if annual RMDs are not required, you have complete control over the withdrawal schedule. That control is the entire basis for the front-loaded vs. back-loaded decision below.

Year-by-year tax model: $500K inherited IRA, $120K earned income

Let’s model three strategies for a single filer earning $120,000/yr in W-2 income who inherits a $500,000 traditional IRA. The original owner died before their RBD, so annual RMDs are not required. We assume 5% annual growth on the remaining IRA balance and use 2026 federal brackets.

Strategy 1: Even spread — $50,000/yr for 10 years

With 5% growth on the undistributed balance, the account grows faster than you’re withdrawing in the early years. The year-10 remainder is roughly $140,000–$160,000 (depending on exact timing), which pushes that final year into the 32% bracket. Total approximate federal tax on all withdrawals: ~$130,000–$140,000.

Strategy 2: Back-loaded — $0 for 9 years, lump sum in year 10

A $500,000 IRA growing at 5% for 10 years reaches approximately $776,000 after rounding. Withdrawing the full amount in a single year stacks it on top of $120K salary, pushing taxable income to ~$880,000. You hit the 37% bracket at $626,351 (single, 2026). Approximate federal tax on the $776,000 distribution: ~$195,000–$210,000.

The cost of waiting: compared to the even-spread strategy, back-loading costs roughly $60,000–$70,000 more in federal tax. That’s the price of letting the entire balance compound tax-deferred and then recognizing it all in one tax year at the highest marginal rates.

Strategy 3: Front-loaded — larger withdrawals in low-income years

The optimal strategy isn’t a fixed schedule — it’s filling the lowest available brackets in each year based on your actual income. If you take a sabbatical in year 3 and earn $0, you could withdraw $103,350 and stay entirely in the 22% bracket (single, 2026). If you get a raise to $180K in year 5, you withdraw less (or nothing) that year.

The bracket-filling approach on our $500K example:

• With $120K W-2 income and $15,750 standard deduction, taxable income before any IRA withdrawal is $104,250
• The 24% bracket ends at $197,300 (single, 2026) — so you have $93,050 of room in the 24% bracket before hitting 32%
• Withdrawing up to ~$93,000/yr keeps every dollar at 24% or below
• In a year with lower income (job change, parental leave, early retirement), fill the 12% and 22% brackets too

Total tax under bracket-filling with consistent $120K income: ~$115,000–$125,000 — saving $15,000–$25,000 versus even-spread and $70,000–$85,000 versus the year-10 lump sum.

Side-by-side: three strategies compared

The bracket-filling approach wins by $70K+ over back-loading. Even the simple even-spread strategy saves $60K+ versus a year-10 lump sum. The worst possible outcome is doing nothing for 9 years, then writing the IRS a check at your highest-ever marginal rate.

The IRMAA trap: inherited IRA distributions spike Medicare premiums

If you’re on Medicare (age 65+), inherited IRA distributions count toward your Modified Adjusted Gross Income for IRMAA surcharge calculations. The 2026 IRMAA tiers for Part B (based on 2024 MAGI):

A back-loaded $776,000 distribution in year 10 pushes MAGI to ~$896,000 — the highest IRMAA tier. That’s $5,327/yr in extra Medicare premiums per person (plus Part D surcharges of $85.80/mo). For a Medicare-age beneficiary, spreading distributions to stay below the $193K tier saves $3,000–$5,000/yr in Medicare premiums alone.

When the original owner was already taking RMDs: the annual distribution overlay

If the IRA owner died after their Required Beginning Date, the 2024 final regulations require you to take annual RMDs in years 1–9, calculated using your single life expectancy from IRS Pub. 590-B. Then drain the remainder in year 10.

For a 45-year-old beneficiary inheriting $500K when the owner died after RBD:

• Year 1 RMD: $500,000 / 39.8 (single life expectancy at 45) = ~$12,563
• Year 2 RMD: recalculated on remaining balance / 38.8
• Annual RMDs are relatively small — roughly $12K–$15K/yr for a younger beneficiary
• The bulk of the account still comes out in year 10

The trap: these annual RMDs are minimums, not maximums. If you take only the annual RMDs (which are tiny relative to the balance), you’re effectively back-loading the account — and you’ll face a massive year-10 distribution. The smarter approach: take the required annual RMD plus additional voluntary distributions to bracket-fill each year, exactly as in Strategy 3 above.

Penalty for missing annual RMDs: 25% excise tax on the shortfall under IRC § 4974, reduced to 10% if corrected within the IRS correction window (per SECURE 2.0).

Inherited Roth IRA: the opposite math

The 10-year depletion deadline applies to inherited Roth IRAs too — but the tax consequence is reversed. Qualified distributions from an inherited Roth are tax-free (original owner already paid income tax on contributions, and earnings are tax-free if the 5-year holding period under IRC § 408A(d)(2) is met).

For inherited Roths, the optimal strategy is back-loading — wait until year 10 to withdraw. Every year the money stays in the Roth, it grows tax-free. There’s no bracket-management decision because there’s no taxable income generated.

When the decedent left both traditional and Roth IRAs: drain the traditional IRA first using the bracket-filling approach. Let the Roth compound tax-free for the full 10 years. This sequencing maximizes total after-tax wealth by accelerating taxable distributions into years where your bracket is lowest and deferring tax-free growth as long as possible.

The low-income year opportunity: when front-loading beats even-spread

The biggest inherited IRA tax savings often come from a single low-income year. Common scenarios:

• Job loss or layoff: earned income drops to $0–$40K (severance + unemployment). Fill the 10%, 12%, and 22% brackets with inherited IRA distributions — up to $103,350 in taxable income stays at 22% or below (single, 2026).
• Sabbatical or parental leave: similar low-income window. Pull $80K–$100K from the inherited IRA at 12%–22% instead of 24%–32%.
• Early retirement before Social Security: the gap years between retirement and age 62/67/70 are ideal for large inherited IRA distributions at the lowest available brackets.

A single year of zero earned income can save $15,000–$25,000 in federal tax on a $100K inherited IRA distribution (taxed at 12%–22% instead of 32%–35%).

Scenario: a Dallas 42-year-old inherits $500K from a parent who died at 68

A Dallas software manager, age 42, earns $120,000/yr. His father died at 68 — before the RBD — leaving a $500,000 traditional IRA with the son as sole beneficiary. No annual RMDs required. Texas has no state income tax.

Year 1–4: He takes $80,000/yr. Taxable income: $120K + $80K − $15,750 = $184,250. He stays in the 24% bracket (which ends at $197,300 single). Federal tax on the $80K withdrawal: approximately $19,200/yr.

Year 5: He takes a 6-month sabbatical. Earned income: $60,000. He pulls $137,000 from the inherited IRA, filling the 24% bracket completely. Taxable income: $60K + $137K − $15,750 = $181,250. Federal tax on the $137K: approximately $29,500 — but at a lower effective rate than the $80K withdrawals in previous years because the first $48,475 of the withdrawal fills the 12% bracket.

Years 6–10: Back at $120K income. Remaining IRA balance is roughly $75K–$100K. He drains it over 2–3 years at $30K–$50K/yr, staying in the 24% bracket.

Total federal tax on all distributions: ~$115,000. Compare to a year-10 lump sum of $776K taxed at up to 37%: ~$200,000. The sabbatical-year front-load alone saved roughly $10,000.

The decision lever that mattered: mapping the withdrawal schedule to his actual income year by year instead of defaulting to “I’ll deal with it later.”

Common mistakes beneficiaries make

1. Assuming annual RMDs are always required. If the owner died before the RBD, they’re not. This misconception causes beneficiaries to take small, suboptimal distributions instead of bracket-filling.
2. Forgetting the account exists until year 9. Inertia is the enemy. A $500K IRA growing at 5% for 9 years becomes $725K+ — a much bigger tax bomb than the original inheritance.
3. Taking too little in low-income years. A job loss or career break is the single best opportunity to pull money out at 10%–12% instead of 24%–32%. Many beneficiaries don’t connect the dots.
4. Ignoring IRMAA. Medicare-age beneficiaries who take a $200K+ distribution in a single year can trigger $5,000+ in annual Medicare surcharges that persist for the premium year tied to that MAGI.
5. Treating the inherited IRA like their own. Non-spouse beneficiaries cannot roll an inherited IRA into their own IRA. The account must remain titled as an inherited IRA, and the 10-year clock runs regardless.

The bottom line

The 10-year inherited IRA rule under IRC § 401(a)(9)(H) gives you a deadline but leaves the timing lever in your hands — as long as the original owner died before their RBD. On a $500K inherited traditional IRA with $120K earned income, the difference between bracket-filling and a year-10 lump sum is $70,000–$85,000 in federal tax. Even a simple even-spread approach saves $60,000+. The optimal strategy is dynamic: fill the lowest available brackets each year, front-load into low-income years (sabbatical, job loss, early retirement gap), and let any inherited Roth accounts compound tax-free until year 10. If you’re on Medicare, keep distributions below the $193K IRMAA tier to avoid $5,000+/yr in premium surcharges. The worst outcome isn’t the 10-year rule itself — it’s the beneficiary who ignores it for 9 years and hands the IRS an extra $70,000 for the privilege of procrastinating.