Do RMD Rules Differ Between Your Own Retirement Account and One You Inherited?
The rules for withdrawing from a retirement account you built up yourself are not the same rules that apply once that account passes to someone else. The label “inherited” changes more about the required-distribution math than people often expect.
The short answer
Yes, the rules genuinely differ. A required minimum distribution from your own account is calculated using your age and, in most cases, a standard life-expectancy table, while an inherited account follows a separate set of rules tied to factors like your relationship to the original owner and whether that owner had already started taking distributions. The two systems share a name but work differently in practice.
What changes about the calculation
For an account you’ve built and own outright, the required amount is generally based on the prior year-end balance divided by a life-expectancy factor tied to your own age. Once an account becomes inherited, several new variables enter the picture:
- The beneficiary’s relationship to the owner matters. A spouse beneficiary generally has more flexibility, including options that resemble treating the account as their own, than a non-spouse beneficiary typically has.
- Whether the original owner had started RMDs matters. If the original account holder had already reached the point of taking distributions, that can affect the timeline the beneficiary must follow.
- A full distribution window may apply instead of a yearly formula. Depending on the beneficiary type, some inherited accounts follow a rule requiring the entire balance to be distributed within a set number of years rather than a yearly minimum calculated the same way as an owner’s account.
Why the distinction exists
The logic behind treating inherited accounts differently comes down to who the tax deferral was originally meant to benefit. Tax-deferred accounts are generally structured around the original saver’s working life and retirement, so when ownership transfers to a beneficiary, the rules aim to prevent indefinite deferral while still accounting for the beneficiary’s different circumstances. This is part of why naming a beneficiary thoughtfully matters well before an account is ever inherited — the choice of beneficiary can influence which distribution rules eventually apply.
Where people get tripped up
A common point of confusion is assuming an inherited account can simply be folded into the beneficiary’s own retirement accounts and treated the same way going forward. In many cases it can’t — inherited IRAs generally have to remain separately titled and follow their own distribution schedule, distinct from any IRA the beneficiary already owns in their own name. Mixing up these two sets of rules, or applying the wrong life-expectancy approach, is one of the more common RMD mistakes beneficiaries make.
What to weigh
If you’re navigating an inherited account, or thinking ahead about how your own accounts might eventually be inherited, it’s worth recognizing that the RMD rules aren’t a single uniform system. The specific rules depend on account type, beneficiary relationship, and the original owner’s distribution status, and those rules are set by the government and have changed over time. Reviewing account titling and beneficiary designations periodically is a reasonable habit, since it affects which set of rules eventually governs a given account.
A practical habit
Because the inherited-account rules are more layered than the standard RMD calculation, many people find it useful to confirm with the account custodian exactly which rule set applies as soon as an account is inherited, rather than assuming it works the same as an account they’ve held themselves for years.