TakeHomeTax

Inherited IRA Calculator

By NumbersLab · Updated 2026

Year-by-year distribution plan under the SECURE Act 10-Year Rule. Compares even-annual, defer-until-year-10, and strategic bracket-filling withdrawal strategies to minimize the inherited IRA tax bomb.

$
without inherited IRA distributions
$
%
Decedent Status
Annual RMDs required in years 1-9 (single life table) PLUS empty by year 10.
Best Strategy: Wait Until Year 10
$589,142Saves $63,191 vs even annual
Net retained after federal tax across 10-year window
Even Annual: Net
$526K
Tax: $133K
Year-10 Lump: Net
$589K
Tax: $205K
Strategic Fill: Net
$436K
Tax: $115K
Why strategic usually wins: filling lower brackets each year avoids spiking into 32%+ in a single year. The mathematical optimum depends on your current income — if you're already in the 32% bracket, even annual may match strategic; if you're in 22%, strategic typically saves $20K-$60K.

Year-by-Year: Strategic Bracket-Fill

YearAgeStarting BalanceRMD RequiredDistribution TakenFederal TaxEffective Marginal
150$397K$13,812$125,100$26,33221.0%
251$289K$11,258$125,100$26,33221.0%
352$173K$8,415$125,100$26,33221.0%
453$51K$5,190$125,100$26,33221.0%
554$0$1,573$51,138$10,06019.7%
655$0$0$0
756$0$0$0
857$0$0$0
958$0$0$0
1059$0$0$0
Sources & Methodology
Authority: SECURE Act of 2019 §401, SECURE Act 2.0 of 2022, IRC §401(a)(9), and Treasury Regulations §1.401(a)(9)-5 (final 2024). Single Life Expectancy Table: IRS Publication 590-B Appendix B (2022+ revised). Federal brackets: IRS Revenue Procedure 2025-11 (2026 inflation adjustments). This tool assumes a non-eligible designated beneficiary (most adult children) and standard rules; does not model surviving-spouse alternatives (treat-as-own, sole-beneficiary spousal rollover), minor children of decedent (10-year clock starts at majority), or qualifying see-through trusts. Inherited Roth IRAs follow the 10-year rule too but distributions are tax-free; this calculator models Traditional inherited IRAs.

How This Works

The SECURE Act of 2019 fundamentally changed inherited IRA rules. For deaths on or after January 1, 2020, most non-spouse beneficiaries lost the 'stretch IRA' — they can no longer spread distributions over their own life expectancy. Instead, the entire account must be emptied by December 31 of the year containing the 10th anniversary of the original owner's death.

The IRS released final regulations in July 2024 confirming a key wrinkle: if the original owner died after their Required Beginning Date (RBD — the date their own RMDs had started), non-eligible designated beneficiaries must also take annual RMDs in years 1-9 based on the IRS Single Life Expectancy Table. If the owner died before their RBD, no annual RMDs apply — just the 10-year empty-by-end rule.

Eligible Designated Beneficiaries (EDBs) still get the stretch: surviving spouses, minor children of the decedent (until majority), disabled or chronically ill beneficiaries, and individuals not more than 10 years younger than the decedent. Surviving spouses have additional options including treating the IRA as their own, which restarts the entire RMD clock at their age 73 (or 75 for those born 1960+).

The tax bomb risk is real. A $500,000 inherited IRA distributed in equal annual chunks adds roughly $50,000 to each year's income — manageable if you're already at modest income, brutal if you're a high-earning professional already in the 32%+ bracket. Waiting until year 10 means dropping the entire balance into one year's income, which almost always pushes you into the 35% or 37% bracket. Strategic bracket-filling (taking just enough each year to fill the 22% or 24% bracket) usually wins on after-tax dollars retained.

This calculator compares three strategies side by side using actual 2026 federal brackets. The strategic option fills your current bracket each year and takes whatever's left in year 10. The total tax owed under each strategy reveals which approach actually maximizes what passes to you net of federal income tax. State tax is not modeled — it would amplify the differences further in high-tax states.

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