How much is the mandatory withdraw from a 401 K?

The mandatory withdrawal from a 401(k) account is known as a Required Minimum Distribution (RMD). The amount of the RMD is calculated based on the individual's age and the total value of the account. The IRS provides tables to determine the RMD amount, which must be withdrawn annually starting at age 72 (or 70.5 for those born before July 1, 1949). Failure to take the RMD can result in significant tax penalties.