Retirement & Investing
Inherited IRA 10-Year RMD Optimizer (2026)
Model three withdrawal strategies for your inherited IRA under the SECURE Act 10-year rule — and see which schedule minimizes your total federal tax.
The SECURE Act (2019, effective 2020) eliminated the "stretch IRA" for most beneficiaries. If you inherit a traditional IRA or 401(k) from someone who was not your spouse, you are almost certainly subject to the 10-year rule: the entire account must be emptied by December 31 of the 10th year after the original owner's death. How you spread withdrawals across those 10 years determines how much of it the IRS takes. This calculator models three strategies — equal, back-loaded, and front-loaded — and shows you the lowest-tax schedule for your income situation.
How the SECURE Act 10-Year Rule Works
Before 2020, most beneficiaries who inherited an IRA could take distributions over their lifetime — dramatically reducing annual income and keeping more of the account in tax-deferred growth. The SECURE Act eliminated this "stretch" strategy for most non-spouse beneficiaries.
The core rule:
For accounts inherited from owners who died on or after January 1, 2020, non-eligible designated beneficiaries (most adult children, siblings, and other non-spouse heirs) must take all funds from the inherited IRA within 10 years of the owner's death. The 10-year clock ends on December 31 of the 10th year.
Two scenarios:
If the owner died before starting RMDs (before their required beginning date): No annual distributions are required during the 10-year window. You can take nothing in years 1-9 and everything in year 10, or any other combination. This flexibility allows meaningful tax planning.
If the owner had already begun RMDs (died on or after their required beginning date): You must take annual distributions based on your own life expectancy (Single Life Table) — and the entire account must still be empty by the end of year 10. This reduces flexibility but does not eliminate the need for strategic planning around the annual amounts.
The tax math:
Distributions from an inherited traditional IRA are taxed as ordinary income in the year taken. There is no capital gains rate, no special treatment. A $200,000 distribution in a year when you already earn $100,000 from wages can easily push you into the 32% or 35% bracket.
This is why withdrawal timing matters. The optimal strategy minimizes the amount taxed at the highest marginal rate by spreading distributions to stay within lower brackets.
SECURE 2.0 refinements:
The Consolidated Appropriations Act of 2023 (SECURE 2.0) reduced the excise tax on missed RMDs from 50% to 25%, and allowed for waivers in certain circumstances. It also clarified some of the annual RMD requirements for NEDBs when the original owner had begun RMDs.
When This Calculator Is Most Valuable
Immediately after inheriting the IRA. The best time to plan is before you take the first distribution. The first withdrawal sets the pattern — starting with the right strategy avoids costly bracket creep later.
When your income is expected to change significantly. If you are planning to retire, start Social Security, or see significant income changes during the 10-year window, model different strategies. A back-load strategy that makes sense today can become suboptimal if your retirement income is higher than expected.
When you are in the 22% or 24% bracket. These are the "sweet spot" brackets where careful planning can keep large distributions from pushing you to 32% or higher. The calculator shows the marginal rate on each year's distribution — this is the signal to watch.
At year-end each year during the window. Check whether your actual income and withdrawal are aligned with your strategy. If your income was lower than expected (good year to take a larger distribution) or higher (good year to minimize), you can adjust prospectively.
For inherited Roth IRAs. The calculator models traditional IRA tax impact, but the 10-year deadline applies to inherited Roths too. For Roth, back-loading is optimal — no tax on the distributions, so you maximize tax-free compounding.
Related Calculators
If you also inherited the IRA as a beneficiary with catch-up contribution eligibility, or are considering how to optimize your own retirement accounts alongside the inherited IRA distributions, see:
- Mandatory Roth Catch-Up Calculator 2026 — if you are age 50+ and affected by the mandatory Roth catch-up rule
- 529-to-Roth IRA Rollover Calculator — if you have excess 529 funds alongside the inherited IRA
Understanding the Inputs
- Inherited IRA Balance
- The fair market value of the inherited IRA as of the date you took ownership. For inherited IRAs, this is typically the December 31 balance of the year of death, or the actual market value at the date of death if you took a lump-sum distribution. Use the current balance if you have already taken some distributions.
- Year of Original Owner's Death
- The calendar year in which the original IRA owner died. The 10-year clock starts from the year of death — you have until December 31 of the 10th year after that. If the owner died in 2025, your deadline is December 31, 2035. The year of death itself does not count as one of your 10 years.
- Original owner had already begun taking RMDs
- This is the critical question under the SECURE Act. If the owner died on or after their "required beginning date" (April 1 of the year after turning 73), they had already begun RMDs. In that case, as the beneficiary you must also take annual RMDs during the 10-year window based on your own life expectancy — you cannot defer all withdrawals to year 10. If the owner died before reaching 73, you have flexibility: you can take any amount in any year, as long as the account is empty by the deadline.
- Withdrawal Strategy
- The calculator compares three strategies. Equal: withdraw the same amount each year over 10 years. Back-load: take minimal amounts early, letting the account grow, then take the bulk in year 10 (useful if your income will drop by then). Front-load: take 50% in year 1, spread the rest over years 2-10 (useful if you are in a lower bracket now and expect income to rise). The optimal strategy depends on your current and expected future tax brackets.
- Other Annual Income
- Your income in each year of the 10-year window from all sources other than the inherited IRA distributions: wages, Social Security, pension, rental income, investment income. This determines how much of each IRA distribution falls into higher tax brackets. If your income will change significantly over the 10 years (retirement, Social Security beginning), you may want to model different amounts for early vs. late years.
- Expected Annual Investment Return
- The annual return you expect to earn on assets remaining in the inherited IRA. This affects the back-loading strategy most: higher returns inside the account favor deferring withdrawals to let the tax-deferred balance grow longer. Lower returns reduce the benefit of deferral. A moderate 5-7% is typical for a balanced portfolio.
Frequently Asked Questions
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The FinCalc Team
Personal Finance Experts
The FinCalc team is a group of personal finance writers, analysts, and engineers dedicated to building accurate, transparent financial calculators. Every formula is verified against industry standards and explained in plain language.
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