If you are the owner of a traditional IRA, you must begin to receive required minimum distributions ("RMDs") from your IRA and, subject to narrow exceptions, other retirement plans, by April 1 of the year after you turn 70 ½. You must receive those distributions by December 31 of each year. If you are the current beneficiary of an inherited IRA (traditional or Roth IRA), you must take RMDs by December 31 of each year regardless of your age. The RMDs must be separately calculated for each retirement account that you own, and you, not the financial institution at which your account is held, are ultimately responsible for making the correct calculations. The penalty for not withdrawing your RMD by December 31 of each year is an additional 50% tax on the amount that should have been withdrawn.