As soon as you reach age 70.5 The software will ask that about every 1099-R you enter.
Generally, For a pension, where you are just getting regular monthly payments out of the account, as determined by the pension administrator.....then you just say you received all f the RMD for that particular 1099-R . The issuer of pensions is responsible for following IRS rules on their RMD distribution RMD amount.
For 1099-R forms form a 401k or, TSP, or from an IRA account, you have to make sure (separately) that you take at least your proper RMDs every year (can even take out more), because those are usually under your control.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
