If you own an IRA, SIMPLE IRA, SEP IRA or retirement plan account, you must begin taking a required minimum distribution (RMD) each year once you reach age 70 ½. If you have multiple IRA accounts, you must calculate the distribution required for each IRA separately, but you are permitted to withdraw the combined amount from just one of your accounts.
However, this provision does not apply to multiple defined contribution plans. If you own more than one, your annual RMD must be distributed from each account. To learn more, view the IRS RMD Comparison Chart.