What This Calculator Does
The IRS requires you to withdraw a minimum amount from your traditional IRA, 401(k), and most other retirement accounts each year once you reach age 73. This is called a Required Minimum Distribution (RMD). Failing to take your RMD results in a significant tax penalty.
This calculator uses the IRS Uniform Lifetime Table to determine your RMD for the current year and projects your distribution schedule for the next 10 years, showing how your balance and required withdrawals change over time.
Inputs Required
- Your Current Age: Must be 73 or older to have RMD obligations
- Prior Year-End Account Balance: The December 31 balance of the account from the previous year
- Expected Annual Return: Used to project the future balance for the multi-year schedule
Outputs Provided
- This Year's RMD: The exact amount you must withdraw this year
- Monthly Equivalent: The RMD divided by 12 for budgeting purposes
- RMD as a Percentage: What fraction of your balance must be withdrawn
- 10-Year Schedule: Age-by-age projection of balance, RMD, and distribution period
How the Calculation Works
The IRS RMD formula divides your prior December 31 account balance by a life expectancy factor from the Uniform Lifetime Table. This factor decreases each year as you age, requiring you to withdraw a larger percentage of your balance over time.
RMD = Prior Year-End Balance / IRS Distribution Period
For example, at age 73 the distribution period is 26.5 years. At age 80 it drops to 20.2 years. This means a larger share of the account must be distributed as you get older. The multi-year schedule uses the projected balance each year (after withdrawing the RMD and applying investment growth) to recalculate the next year's distribution.
How to Use the Calculator
- Enter your current age (must be 73 or older for RMD obligations)
- Look up your account statement for the December 31 balance from last year
- Enter that balance as the prior year-end balance
- Set an expected return rate for the projection
- Review your current year RMD and the 10-year schedule
Example Calculation
A 73-year-old with a December 31 balance of $500,000:
- IRS distribution period at age 73: 26.5 years
- RMD: $500,000 / 26.5 = $18,868
- Monthly equivalent: $1,572
- RMD as percentage of balance: 3.77%
By age 80, if the same account has grown to $520,000 after distributions, the distribution period drops to 20.2 years, requiring a withdrawal of $25,743, representing 4.95% of the balance. The required percentage rises every year.
Real World Scenarios
Planning Taxes Around RMDs
RMDs are taxed as ordinary income. A retiree who does not need the full RMD for living expenses should plan for the tax impact. Knowing the RMD amount in advance allows for quarterly estimated tax payments and avoids an unexpected tax bill in April.
Qualified Charitable Distributions
Retirees who are charitably inclined can satisfy all or part of their RMD through a Qualified Charitable Distribution (QCD), directing up to $105,000 per year (2024) directly to a qualified charity. This satisfies the RMD requirement without the amount being included in taxable income.
Multiple Account Management
If you have multiple traditional IRAs, you must calculate the RMD for each account separately but may withdraw the total from any one or combination of accounts. For 401(k) plans, the RMD from each plan must be taken from that specific plan. Use this calculator for each account separately and add the results.
Why This Calculation Matters
Missing an RMD triggers a 25% excise tax on the amount that should have been withdrawn (reduced to 10% if corrected within two years). For a $20,000 RMD, that penalty is up to $5,000 on top of the income taxes owed. Knowing your exact RMD each year is essential for both compliance and tax planning.
Common Mistakes to Avoid
- Using the wrong balance date: Always use the December 31 balance from the prior year, not the current balance
- Forgetting the first year deadline: Your first RMD can be delayed until April 1 of the year after you turn 73, but taking two distributions in one year increases your taxable income significantly
- Ignoring inherited accounts: Inherited IRAs have different RMD rules from your own accounts. The SECURE Act requires most non-spouse beneficiaries to deplete the account within 10 years
- Applying 401(k) RMD rules to IRAs: Still working after 73? You may delay RMDs from your current employer's 401(k) but not from traditional IRAs or old 401(k)s