The minimum amount you must withdraw each year from certain retirement accounts starting at a set age.
RMDs are mandatory annual withdrawals from tax-deferred accounts like Traditional IRAs and 401(k)s, beginning at age 73 under current rules. The amount is your account balance divided by an IRS life-expectancy factor. Missing an RMD triggers a steep penalty. Roth IRAs have no RMDs during the owner's lifetime.
At 73, a retiree divides their IRA balance by the IRS factor to find that year's required withdrawal.