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RMD on $10 million at 88

The 2026 required minimum distribution on a $10 million IRA or 401(k) at age 88 is $729,927.01. Below: how it is worked out, when it is due, the next ten years, the federal tax it adds and a calculator set to $10 million at 88.

Short answer: $729,927.01 for 2026, or about $60,827 a month: the December 31 balance of $10,000,000 divided by the IRS divisor for age 88, 13.7. That is 7.30% of the account.

The RMD on $10 million at 88

Divide the balance on December 31 of last year by the IRS Uniform Lifetime divisor for the age you reach this year: $10,000,000 ÷ 13.7 = $729,927.01, which is 7.30% of the account. You turn 88 in 2026 (born 1938), and your RMDs started at 70½, so the 2026 amount is due by December 31, 2026.

The 2026 RMD on $10,000,000 at 88, taken in instalments
TakenEach paymentPayments
Once a year$729,927.011
Quarterly$182,481.754
Monthly$60,827.2512

The total only has to be out by the deadline; how often you take it is up to you and the custodian. Withholding federal tax from the RMD counts as paying it, and tax withheld late in the year is treated as paid evenly through it.

The next ten years from 88

Starting with $10 million at 88 and a 5% return after each RMD comes out. The share you must take rises every year, from 7.30% now to 12.82% at 97.

RMDs from $10 million starting at 88 in 2026, 5% a year
YearAgeBalance at startDivisorRMDBalance at end
202688$10,000,00013.7$729,927$9,733,577
202789$9,733,57712.9$754,541$9,427,988
202890$9,427,98812.2$772,786$9,087,962
202991$9,087,96211.5$790,258$8,712,589
203092$8,712,58910.8$806,721$8,301,162
203193$8,301,16210.1$821,897$7,853,228
203294$7,853,2289.5$826,656$7,377,901
203395$7,377,9018.9$828,978$6,876,369
203496$6,876,3698.4$818,615$6,360,642
203597$6,360,6427.8$815,467$5,822,433

What the return changes

The RMD is a share of whatever the account holds, so the return decides how much comes out over the decade and what is left at 97.

$10 million from 88: ten years of RMDs by return
ReturnRMDs paid over ten yearsRMD at 97Balance after ten years
0%$6,425,531$525,657$3,574,469
3%$7,302,092$685,863$4,803,788
5%$7,965,845$815,467$5,822,433
7%$8,700,973$966,399$7,031,522

Tax on an RMD of $729,927

An RMD from a traditional IRA or 401(k) is ordinary income, and it can make more of your Social Security taxable. Estimated federal tax it adds at 88 on 2026 brackets, with the standard deduction, the 65-and-older amount and the senior deduction. Most states add their own tax; the retirement tax calculator includes it.

Federal tax added by the RMD, estimate on 2026 rules
HouseholdTax the RMD addsShare of the RMDRMD after that tax
Single, $24,000 of Social Security$226,86331%$503,064
Married, $42,000 of Social Security$193,08326%$536,844

Giving it to charity instead

Up to $111,000 can go from an IRA straight to a charity in 2026 as a qualified charitable distribution, counted toward this RMD and kept out of taxable income. That covers 15% of the $729,927 RMD; the other $618,927 stays taxable. QCDs are open from 70½, come only from IRAs (not 401(k)s), and have to be paid to the charity directly. A Roth conversion done before RMDs begin is the other way to shrink them: see the Roth conversion calculator.

RMD on $10 million at other ages

2026 RMD on a $10,000,000 balance by age
AgeDivisorRMDPer month
7326.5$377,358$31,447
7425.5$392,157$32,680
7524.6$406,504$33,875
7623.7$421,941$35,162
7722.9$436,681$36,390
7822.0$454,545$37,879
7921.1$473,934$39,494
8020.2$495,050$41,254
8119.4$515,464$42,955
8218.5$540,541$45,045
8317.7$564,972$47,081
8416.8$595,238$49,603
8516.0$625,000$52,083
8615.2$657,895$54,825
8714.4$694,444$57,870
8813.7$729,927$60,827
8912.9$775,194$64,599
9012.2$819,672$68,306

Every age from 73 to 100 is on the RMD on $10 million page, and every balance at 88 on RMD at age 88.

Other balances at 88

2026 RMD at age 88 by balance (divisor 13.7)
December 31 balanceRMD at 88Per month
$100,000$7,299$608
$150,000$10,949$912
$200,000$14,599$1,217
$250,000$18,248$1,521
$300,000$21,898$1,825
$350,000$25,547$2,129
$400,000$29,197$2,433
$450,000$32,847$2,737
$500,000$36,496$3,041
$600,000$43,796$3,650
$700,000$51,095$4,258
$750,000$54,745$4,562
$800,000$58,394$4,866
$900,000$65,693$5,474
$1,000,000$72,993$6,083
$1,250,000$91,241$7,603
$1,500,000$109,489$9,124
$1,750,000$127,737$10,645
$2,000,000$145,985$12,165
$2,500,000$182,482$15,207
$3,000,000$218,978$18,248
$4,000,000$291,971$24,331
$5,000,000$364,964$30,414
$10,000,000$729,927$60,827

The calculator, set to $10 million at 88

Set to someone born in 1938, who turns 88 in 2026, with $10 million on December 31. Change the balance, the birth year or a planned QCD; the tax part takes your Social Security, other income and state.

Your 2026 RMD$729,927.01$10,000,000 ÷ 13.7 (age 88)
DeadlineDecember 31, 2026Every year after the first
Share of the balance7.30%1 ÷ 13.7
Your RMD starting age70½Born in 1938

Born in 1938, you are 88 in 2026, so the IRS divisor is 13.7. Your 2026 required minimum distribution from a $10,000,000 balance is $729,927.01, due by December 31, 2026.

An RMD is income, so it can move your Medicare premium two years later. Add this RMD in the IRMAA calculator.

Taxable RMD$729,927The whole RMD counts as income
Federal tax it adds$234,263Including Social Security it makes taxable
State tax it adds$0Pick a state to include it
Tax as a share of the RMD32.1%$234,263 in total

With $24,000 of Social Security and $20,000 of other income, filing single, your $729,927 taxable RMD adds about $234,263 of federal tax, 32.1% of it. That is the difference between your tax with and without the RMD, on 2026 brackets.

Figures checked on against IRS Publication 590-B (2025), Distributions from IRAs, IRS, Retirement plan and IRA required minimum distributions FAQs and T.D. 10001, final required minimum distribution regulations (July 19, 2024).

Frequently asked questions

What is the RMD on $10 million at 88?
$729,927.01 for 2026: $10,000,000 divided by the IRS Uniform Lifetime divisor for 88, which is 13.7. That is 7.30% of the balance, or about $60,827 a month.
When is the RMD at 88 due?
You turn 88 in 2026 (born 1938), and your RMDs started at 70½, so the 2026 amount is due by December 31, 2026. Several IRAs can be totalled and the RMD taken from any of them; each 401(k) pays its own.
Can a QCD cover the RMD on $10 million at 88?
Partly. Up to $111,000 can go from an IRA straight to charity in 2026 and count toward the RMD tax-free; the other $618,927 of the $729,927 RMD is taxable income.
What will the RMD on $10 million be at 89?
If the balance is still $10 million on December 31, $775,193.80 (divided by 12.9). If the account earns 5% after this year’s RMD comes out, it holds about $9,733,577 and the RMD at 89 is about $754,541.