inherited ira rmd calculator

If you inherited an IRA, figuring out your required minimum distribution (RMD) can feel confusing fast. This calculator gives you a practical estimate based on the most common inherited IRA scenarios so you can plan withdrawals and avoid costly surprises.

Inherited IRA balance as of last Dec 31 ($)

Distribution rule

RBD = Required Beginning Date for the original owner.

Current distribution year number

Use 1 for first distribution year, 2 for second, etc.

Initial life expectancy factor (from IRS Single Life Table)

Enter the IRS factor used in year 1. This calculator subtracts 1.0 each year after that.

Educational tool only. Inherited IRA rules changed under SECURE Act updates and can vary by beneficiary type, trust language, and account history. Confirm final numbers with your IRA custodian or tax professional.

How inherited IRA RMD rules work

The withdrawal rule depends mainly on who inherited the account and whether the original IRA owner died before or after their required beginning date (RBD). For many non-spouse beneficiaries, the SECURE Act introduced the 10-year framework, while eligible designated beneficiaries may still use life expectancy distributions.

1) Life expectancy method

This method is often used by eligible designated beneficiaries (for example, certain spouses, minor children in limited periods, disabled or chronically ill beneficiaries, and beneficiaries close in age to the decedent). You start with an IRS life expectancy factor and reduce it by 1.0 each year.

Year 1 divisor: initial IRS factor
Year N divisor: initial factor − (N − 1)
RMD: prior year-end account balance ÷ current divisor

2) 10-year rule when owner died before RBD

In this scenario, there is generally no annual required minimum distribution for years 1 through 9, but the inherited IRA must be fully distributed by the end of year 10. Many people still choose level annual withdrawals to smooth taxes.

3) 10-year rule when owner died after RBD

When death occurs after RBD, annual withdrawals in years 1 through 9 may be required under current guidance, and the account must still be emptied by year 10. This calculator estimates those annual minimums using your life expectancy divisor input, then assumes a full payout in year 10.

What this calculator gives you

An estimated RMD for the current year under your selected rule
The divisor used (if applicable)
A level-withdrawal planning amount under the 10-year framework

Quick example

Suppose your inherited IRA balance is $300,000 and you are using life expectancy method with an initial factor of 40.6:

Year 1 divisor = 40.6 → RMD = $300,000 / 40.6 = $7,389.16
Year 2 divisor = 39.6 (subtract 1.0) using next year’s Dec 31 balance

For a 10-year rule account with $300,000 in year 4, a level depletion estimate would be $300,000 / 7 = $42,857.14 for planning.

Common mistakes to avoid

Using the wrong rule type (life expectancy vs 10-year).
Using current balance instead of prior year-end balance.
Assuming annual RMDs are never required under the 10-year rule.
Forgetting that year 10 generally requires full distribution of remaining funds.
Ignoring tax-bracket impact when choosing withdrawal timing.

FAQ

Does this replace IRS instructions?

No. This tool is for planning and education. Always verify with custodian forms and current IRS publications.

What if I am a spouse beneficiary?

Spousal options can be unique (including spousal rollover). Depending on your election, your RMD path can differ from non-spouse inherited IRA rules.

Can I withdraw more than the RMD?

Yes. The RMD is a minimum. You may take more, but that can increase current-year taxable income.

Bottom line

An inherited IRA can create long-term tax planning opportunities if you understand the distribution framework early. Use this calculator as a starting point, then confirm your exact RMD requirement before filing taxes or year-end withdrawal deadlines.