When am I required to take an RMD (required minimum distribution)?

An RMD is the amount of money that must be withdrawn from an employer-sponsored retirement plan or a Traditional IRA when you reach a certain age.

For Traditional IRAs, RMD distributions must begin by April 1 of the year following the calendar year in which you reach age 73, regardless of whether you are still employed. If you have multiple plans, RMD distributions can be taken as an aggregate from one plan. 

For a Roth IRA, withdrawals are not required until after the death of the owner.

For 403(b) and 457(b) Plans, RMD distributions must begin by April 1 of the year following the calendar year in which you reach age 73, unless you are still actively employed.