Retirement Calculator

RMD Calculator: What It Calculates and How to Read the Result

Reviewed by Raman Singh, CFP® · IRS Enrolled AgentUpdated

Quick answer

Your Required Minimum Distribution (RMD) at age 73+ is calculated by dividing your prior-year-end IRA balance by the IRS Uniform Lifetime Table divisor for your age. At age 73 the divisor is 26.5, meaning your first RMD is roughly 3.77% of the balance. The divisor shrinks every year, so RMDs grow as a percentage of the remaining balance.

Required Minimum Distribution (RMD)
Estimate RMDs and project pre-tax balance through age 100 using IRS life expectancy tables.
Inputs
Adjust assumptions to see annual RMDs.
End of yearBeginning of year

Default: end of year (growth applies before RMD).

Default: Uniform Lifetime (Table III)

UniformJoint
Current year RMD
$39,623
Next year RMD
$41,604
Balance at age 80
$1.0M
Balance at age 90
$860.8K
Balance at age 100
$396.5K
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Balance over time
Ending balance by age (optional overlay: RMD amounts).
Projection (annual)
Chronological projection from current age through age 100.
AgeYearStartingGrowthDivisorRMDEnding
732026$1,000,000$50,00026.5$39,623$1,010,377
742027$1,010,377$50,51925.5$41,604$1,019,292
752028$1,019,292$50,96524.6$43,506$1,026,751
762029$1,026,751$51,33823.7$45,489$1,032,599
772030$1,032,599$51,63022.9$47,346$1,036,883
782031$1,036,883$51,84422.0$49,488$1,039,240
792032$1,039,240$51,96221.1$51,716$1,039,486
802033$1,039,486$51,97420.2$54,033$1,037,427
812034$1,037,427$51,87119.4$56,149$1,033,149
822035$1,033,149$51,65718.5$58,638$1,026,169
832036$1,026,169$51,30817.7$60,874$1,016,603
842037$1,016,603$50,83016.8$63,538$1,003,895
852038$1,003,895$50,19516.0$65,881$988,209
862039$988,209$49,41015.2$68,264$969,355
872040$969,355$48,46814.4$70,682$947,141
882041$947,141$47,35713.7$72,591$921,907
892042$921,907$46,09512.9$75,039$892,963
902043$892,963$44,64812.2$76,853$860,758
912044$860,758$43,03811.5$78,591$825,205
922045$825,205$41,26010.8$80,228$786,237
932046$786,237$39,31210.1$81,738$743,811
942047$743,811$37,1919.5$82,211$698,791
952048$698,791$34,9408.9$82,442$651,289
962049$651,289$32,5648.4$81,411$602,442
972050$602,442$30,1227.8$81,098$551,466
982051$551,466$27,5737.3$79,321$499,719
992052$499,719$24,9866.8$77,163$447,543
1002053$447,543$22,3776.4$73,425$396,495
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Assumptions & Disclosures
Educational tool; simplified modeling.

Growth is applied annually. By default, growth applies before RMDs (end-of-year). With the beginning-of-year toggle, the RMD is taken before growth for that year.

RMDs are computed using the IRS Uniform Lifetime Table (Table III) by default. Joint Life (Table II) is available when modeling Married Filing Jointly scenarios.

This calculator provides educational estimates only. Actual RMD rules and outcomes may vary. Consult a qualified tax professional.

What This Calculator Actually Answers

This calculator computes your specific RMD amount for each year, starting at your required beginning date (currently April 1 of the year after you turn 73 under SECURE 2.0). It uses the IRS Uniform Lifetime Table, the same divisor table the IRS publishes annually, to convert your year-end IRA balance into the required distribution amount.

For households with multiple traditional IRAs, all balances are aggregated before computing the total RMD, but the distribution can be taken from any one or several accounts. 401(k) RMDs are calculated and distributed separately from each individual 401(k); they cannot be aggregated with IRAs.

How to Read the Result

The RMD number itself is the floor: you can always take more. The point of computing it is to ensure you take at least the minimum (the penalty for under-withdrawal is steep: 25% of the shortfall, reducible to 10% if corrected promptly).

The more important read is the trajectory over time. A $2M traditional IRA at age 73 produces an RMD of roughly $75,500. By age 80 the same balance (assuming modest growth) produces an RMD closer to $115,000. By age 90 the divisor has dropped to 12.2, an 8.2% withdrawal rate that, combined with Social Security and any pension, often pushes households into higher tax brackets and across IRMAA thresholds.

Common Mistakes

  • Missing the deadline. RMDs are due by December 31 of each calendar year (except the first RMD, which has an April 1 grace period). Missing the deadline triggers a 25% excise tax on the shortfall.
  • Forgetting that 401(k) RMDs cannot be aggregated with IRA RMDs. Each 401(k) requires its own RMD; IRAs can be aggregated.
  • Reinvesting the RMD into a taxable brokerage account without first considering a Qualified Charitable Distribution (QCD) for the charitable portion of your annual giving.
  • Calculating the RMD on the wrong year-end balance. The RMD uses the prior December 31 balance, not a current balance or an average.
  • Ignoring the IRMAA two-year-out consequence of large RMDs combined with Social Security and other income.

When This Calculator Is Not the Right Tool

This tool gives you the mandatory minimum. It does not tell you the optimal amount to withdraw, which often exceeds the RMD when bracket-filling makes sense, or when partial Roth conversions during the same year are advisable. For the strategic question of how much to draw and from which accounts, use the Tax-Efficient Withdrawal calculator.

Frequently Asked Questions

When do RMDs start?

Under SECURE 2.0, the required beginning date is April 1 of the year after you turn 73 (rising to age 75 starting in 2033 for those born in 1960 or later — pending any future legislative changes). You can choose to take the first RMD in the year you turn 73 (before December 31) instead of waiting to April 1 of the following year, which avoids stacking two RMDs in one calendar year.

What if I'm still working at 73?

If you're still working for the employer that sponsors your 401(k), and you don't own 5%+ of the company, you can delay your 401(k) RMD from that plan until you actually retire — the 'still-working exception.' This does not apply to IRAs or to 401(k)s from previous employers, which begin at 73 regardless.

Can I take my RMD from just one account if I have multiple IRAs?

Yes. For traditional IRAs, the RMD is calculated on the aggregate balance but can be taken from any combination of IRAs. For 401(k)s, each account requires its own RMD distribution — they cannot be aggregated.

What is a Qualified Charitable Distribution (QCD)?

A QCD lets you direct up to $108,000 (2026 limit, indexed annually) per year from an IRA directly to a qualified charity. The distribution counts toward your RMD but is excluded from your taxable income — which is a better tax outcome than taking the RMD into income and then deducting a charitable contribution (especially since you may not itemize). QCDs are available starting at age 70½, even before RMDs begin at 73.

Calculators are a starting point. If you want to see how the result applies to your specific situation across tax brackets, IRMAA thresholds, and your full retirement income plan, schedule a 20-minute Strategic Fit Interview.