Inherited IRA / Beneficiary RMD Calculator
Estimate annual distributions using either the life-expectancy method or a 10-year drawdown strategy.
How this beneficiary RMD calculator works
A beneficiary required minimum distribution (RMD) is the amount that must be withdrawn from an inherited retirement account each year when IRS rules require it. This calculator gives you a quick estimate of what that withdrawal might look like based on common calculation paths.
The key formula for life expectancy distributions is straightforward:
RMD = prior year-end account balance ÷ life expectancy factor
Who typically uses this tool?
- Non-spouse beneficiaries of inherited IRAs
- Eligible designated beneficiaries using life expectancy rules
- Heirs managing a 10-year distribution window
- Financial planners creating draft withdrawal scenarios
Two common beneficiary distribution frameworks
1) Life Expectancy Method
This method is often associated with eligible designated beneficiaries (EDBs) or certain inherited accounts governed by pre-SECURE Act treatment. You start with a life expectancy factor, then in many cases reduce that factor by 1 each year.
- Enter your account balance from December 31 of last year
- Use age lookup or supply your own factor
- Enter years since your first beneficiary RMD year
- The calculator returns this year's estimated required withdrawal
2) 10-Year Rule Estimate
Many non-eligible beneficiaries inheriting after 2019 must generally empty the account by the end of year 10. Depending on facts, annual RMDs may also apply in years 1-9. This calculator provides a practical “level-withdrawal” estimate so you can pace distributions across remaining years.
- Enter years since death (0 to 9)
- Set an optional expected return assumption
- Get a level annual draw estimate for the remaining years
Inputs that matter most
Prior year-end balance
RMD calculations are usually based on the inherited account value on the last day of the prior year. Even small errors here can materially change your result.
Life expectancy factor
The factor is central in life expectancy calculations. If your advisor or custodian gave you an official factor, use the manual override to align your estimate to actual records.
Timeline year
For both methods, the year count matters. A one-year difference can materially change required withdrawals or remaining drawdown time.
Common beneficiary RMD mistakes to avoid
- Using current account value instead of prior year-end value
- Using the wrong life expectancy table or incorrect age year
- Forgetting to reduce factor by 1 in applicable years
- Assuming the 10-year rule always means “no withdrawals until year 10”
- Missing deadlines and potential IRS penalty exposure
Practical planning tips
Coordinate taxes across years
Inherited IRA withdrawals are often taxable as ordinary income (except qualified distributions from inherited Roth accounts). Spreading withdrawals can help manage brackets and Medicare premium impacts.
Model multiple scenarios
Run this calculator several times with different return assumptions and timelines. A conservative scenario, base case, and optimistic case can make planning far easier.
Document your assumptions
Write down which rule you used, which factor you applied, and the valuation date. This makes annual updates cleaner and reduces mistakes.
Quick disclaimer
Beneficiary RMD rules changed significantly under the SECURE Act and SECURE 2.0 guidance, and details can vary by account type and beneficiary classification. Use this calculator as a planning aid—not a final legal or tax determination. Confirm your actual required amount with your IRA custodian, CPA, or financial advisor.