BYTETOOLS

RMD Calculator

Work out your required minimum distribution from the IRS Uniform Lifetime Table, aggregate several accounts, and project future RMDs with a growth rate.

Accounts — prior year-end balances

Total $600,000.00. IRA balances may be aggregated and the total taken from any one of them; each 401(k) is generally calculated and withdrawn separately.

Life expectancy factor

$24,390.24
This year's RMD
24.6
Life expectancy factor
$2,032.52
Monthly equivalent
4.07%
Withdrawal rate

Shortfall and excise penalty

$24,390.24
Still to withdraw
$6,097.56
Penalty if not taken

Projection — $297,560.62 withdrawn over 10 years

Projected required minimum distribution for each future year
YearAgeOpening balanceFactorRMDClosing balance
202675$600,000.0024.6$24,390.24$604,390.25
202776$604,390.2523.7$25,501.70$607,832.98
202877$607,832.9822.9$26,542.92$610,354.56
202978$610,354.5622.0$27,743.39$611,741.73
203079$611,741.7321.1$28,992.50$611,886.69
203180$611,886.6920.2$30,291.42$610,675.03
203281$610,675.0319.4$31,478.09$608,156.79
203382$608,156.7918.5$32,873.34$604,047.62
203483$604,047.6217.7$34,126.98$598,416.67
203584$598,416.6716.8$35,620.04$590,936.46

RMD = prior year-end balance ÷ the life expectancy factor for your age. The seeded factors are the IRS Uniform Lifetime Table that applies to distribution years from 2022 onward, and they sit in an editable box so a future table revision is a data edit. If your sole beneficiary is a spouse more than ten years younger, or the account is inherited, look up your factor in IRS Publication 590-B and enter it directly. This is a planning estimate, not tax advice — the age at which RMDs start, and the rules for each account type, depend on your birth year and plan, so confirm with your plan administrator or tax adviser.

What is the RMD Calculator?

The ByteTools RMD Calculator divides your prior year-end retirement balance by the life expectancy factor for your age to give the required minimum distribution you must take.

  • IRS Uniform Lifetime factors shipped as an editable table, not hardcoded
  • Multiple accounts aggregated into one prior year-end balance
  • Multi-year projection with an assumed growth rate applied after each withdrawal
  • Shortfall and excise penalty at a configurable penalty rate
  • Custom factor mode for Joint and Last Survivor or Single Life lookups
  • CSV export of the full projection

How to use the RMD Calculator

  1. 1

    Enter the age you reach this year, the distribution year and an assumed annual growth rate.

  2. 2

    Add each retirement account with its prior year-end balance; the totals are aggregated for you.

  3. 3

    Keep the Uniform Lifetime Table or switch to entering a factor from Publication 590-B directly.

  4. 4

    Enter anything you have already withdrawn to see the remaining shortfall and the excise penalty on it.

  5. 5

    Set how many years to project and download the year-by-year table as a CSV.

About the RMD Calculator

The ByteTools RMD Calculator divides your prior year-end retirement balance by the life expectancy factor for your age to give the required minimum distribution you must take. Add as many accounts as you like and it aggregates the balances, then projects RMDs forward at an assumed growth rate so you can see the pattern over the next decade.

The Uniform Lifetime factors sit in an editable text box rather than being hardcoded, so a future IRS table revision is a data edit you can make yourself. If your sole beneficiary is a spouse more than ten years younger, or the account is inherited, you can switch to entering the factor from Publication 590-B directly.

Balances are entered and calculated entirely in your browser and nothing is uploaded. This is a planning estimate rather than tax advice — the age RMDs begin, and the rules for each account type, depend on your birth year and plan, so confirm with your administrator or tax adviser.

Frequently asked questions

How is an RMD calculated?

Divide your account balance as of December 31 of the previous year by the life expectancy factor for your age from the applicable IRS table. A 500,000 balance at age 75, where the Uniform Lifetime factor is 24.6, gives a required distribution of 20,325.20 for the year.

Can I take my whole RMD from one account?

For traditional IRAs the amounts are calculated per account but may be aggregated and withdrawn from any one of them. Employer plans such as 401(k)s generally do not work that way — each plan's distribution normally has to come out of that plan.

What is the penalty for missing an RMD?

There is an excise tax on the amount you failed to withdraw, currently 25%, reduced to 10% if you correct the shortfall within the allowed window. The penalty rate is an editable field here so you can model either figure, and it can sometimes be waived for reasonable cause.

When do required minimum distributions start?

The starting age has moved several times in recent legislation and depends on your year of birth, so the calculator asks for your age rather than assuming one. Check the current starting age with the IRS or your plan administrator before relying on any projection.

Which table should I use for my RMD?

Most people use the Uniform Lifetime Table, seeded here by default. Use the Joint and Last Survivor table if your sole beneficiary is a spouse more than ten years younger, and the Single Life table for most inherited accounts — enter those factors using the custom option.

Are my account balances private?

Yes. Every calculation runs in your browser and no balance, age or projection is uploaded or stored anywhere.

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