RMD Calculator
What is a Required Minimum Distribution (RMD)?
A required minimum distribution (RMD) is the minimum amount the IRS generally requires you to withdraw each year from certain tax-deferred retirement accounts, such as traditional IRAs and many workplace retirement plans. The purpose is simple: those contributions and earnings were tax-deferred, and eventually the government wants to collect taxes.
Your annual RMD is usually calculated by dividing your prior year-end account balance by an IRS life expectancy factor. This page gives you a fast estimate so you can plan your withdrawals, taxes, and cash flow.
How this RMD calculator works
Inputs used
- Account balance: Value of the account on December 31 of the prior year.
- Age: Your age at the end of the current distribution year.
- Divisor method: By default, the IRS Uniform Lifetime Table factor is used.
- Withholding rate: Optional estimate of taxes withheld from the distribution.
Formula
RMD = Prior year-end account balance ÷ IRS life expectancy factor
Example: If your prior year-end balance is $400,000 and your divisor is 25.5, then your RMD is $15,686.27.
Who generally needs to take an RMD?
RMD rules can change, but the current general framework under SECURE legislation is:
- If you were born in 1950 or earlier, your required beginning age is generally 72.
- If born from 1951 to 1959, your required beginning age is generally 73.
- If born in 1960 or later, your required beginning age is generally 75.
This calculator gives an estimate using those age thresholds when you provide birth year. Inherited IRAs, employer plans, and special exceptions may have different rules.
Common RMD mistakes to avoid
- Using the wrong balance date: use December 31 of the previous year, not your current balance.
- Missing the deadline: first-year timing and annual deadlines can be different.
- Using the wrong table/factor: not every account or beneficiary setup uses the same divisor.
- Forgetting tax planning: RMDs are typically taxable and may affect brackets, IRMAA, and credits.
RMD tax planning ideas
1) Spread distributions during the year
Taking monthly or quarterly withdrawals can make cash flow easier and reduce year-end surprises. The calculator includes a monthly equivalent to help with pacing.
2) Coordinate with Social Security and other income
RMDs stack on top of other taxable income. Strategic timing can help reduce marginal-rate spikes.
3) Consider charitable giving strategies
Some retirees use qualified charitable distributions (QCDs) to satisfy eligible RMD amounts while potentially lowering taxable income.
Frequently asked questions
Does this work for inherited IRAs?
It can provide a quick estimate if you use the correct custom divisor, but inherited account rules are highly specific. Verify your factor with official IRS guidance or a qualified advisor.
Can I withdraw more than my RMD?
Yes. You may always withdraw more than the required minimum. Extra withdrawals generally do not reduce future RMD requirements.
What if I have multiple accounts?
You generally calculate each account's RMD separately, though some account types allow aggregated withdrawals. Plan carefully based on account type.