The RMD Formula
RMD = Prior Year-End Account Balance ÷ IRS Life Expectancy Factor
This calculator uses the IRS Uniform Lifetime Table, which applies to most account owners (a different table applies if your sole beneficiary is a spouse more than 10 years younger).
When RMDs Start
Under the SECURE 2.0 Act, the RMD starting age is 73 for those who turn 72 after 2022 (rising to 75 starting in 2033). RMDs generally apply to traditional IRAs, 401(k)s, and similar tax-deferred retirement accounts — Roth IRAs are exempt from RMDs during the original owner's lifetime.
Why RMDs Exist
Because contributions to traditional retirement accounts were tax-deferred, the IRS requires eventual withdrawals (and the associated income tax) starting at a certain age, rather than allowing indefinite tax deferral.
Penalties for Missing an RMD
Failing to take your full RMD by the deadline can result in a substantial IRS excise tax penalty (reduced under SECURE 2.0 from 50% to 25%, or 10% if corrected promptly) on the amount not withdrawn — always consult a tax advisor to ensure compliance.