What Generally Happens if You Forget to Take a Required Minimum Distribution?
The deadline passes quietly, no reminder arrives, and only months later does someone realize the withdrawal that was supposed to happen out of a retirement account never did. It’s an easy thing to miss, especially the first year it applies, and it raises an immediate question about what comes next.
The short answer
Missing a required minimum distribution, or RMD, generally triggers an excise tax penalty on the amount that should have been withdrawn but wasn’t. The penalty can often be reduced or waived if the shortfall is corrected quickly and the account owner requests relief with a reasonable explanation. The rules and penalty amounts have shifted in recent legislation, so checking current guidance for the specific tax year involved matters more than relying on older information.
Why this deadline exists at all
Retirement accounts like traditional 401(k)s and IRAs allow contributions to grow without being taxed along the way, but that deferral isn’t indefinite. Once an account owner reaches a certain age, the rules generally require annual withdrawals so the deferred taxes eventually get paid. Skipping a distribution means that mechanism didn’t function as intended for that year, which is why a penalty exists as a backstop.
What typically happens after a missed distribution
- A penalty applies to the shortfall, not the whole account. Only the portion that should have been withdrawn and wasn’t is generally subject to the excise tax, not the account’s full balance.
- Correcting it quickly tends to matter. Taking the missed distribution as soon as the error is discovered, rather than waiting, is generally viewed favorably when requesting a reduced or waived penalty.
- A written explanation is usually part of the process. Filing the relevant IRS form along with a reasonable cause statement — describing why the distribution was missed and that steps were taken to fix it — is generally how account owners request relief.
Common reasons this happens
Forgetting the very first RMD is common, since the rules around age and timing can be confusing and the account custodian doesn’t always send a clear reminder. Other frequent causes include an account that was recently inherited, with its own separate distribution rules, or a case where multiple accounts across different old employers make it easy to lose track. Anyone who has tracked down an old 401(k) after changing names or addresses knows how easily an account can slip out of view entirely, which makes a missed RMD even more likely on a forgotten account.
How this connects to other retirement decisions
People weighing whether Social Security will still exist by the time they retire or working through what a 457 plan is and who typically uses one are often the same people juggling several account types with different rules, which is exactly the situation where a distribution deadline is easiest to lose track of.
The takeaway
A missed RMD is a common and generally correctable mistake rather than a permanent one, but it’s worth taking seriously once discovered rather than letting it compound across another year. Reviewing current IRS guidance, keeping a running list of every retirement account and its distribution requirements, and correcting a missed withdrawal promptly are the practical steps most closely tied to reducing or avoiding the penalty.