I am 76, working full time, collecting annuity, pension & SS... also contributing to 401k and SS. Do I need to report RMD?

[Vanessa A]

Yes.  It is based on age, still working does not affect it nor does still contributing. However, if your 401k is with your current employer, you would NOT have to take a RMD from that 401k yet.  

[Opus 17 · Accepted solution]

For an IRA, you must take an RMD (or more) every year after turning 73, even if you are still working.

For a workplace plan like a 401(k), you must take RMDs starting the year you turn 73 or the year after you retire, if that is later.  However, that only applies to the plan provider.  If you retire from ABC Corp, you must start taking RMDs from that 401(k), even if you go back to work part time for XYZ Corp.  Since you say you are collecting your SS benefit, then you have declared retirement (at least to the social security administration) so you must take RMDs from all your retirement accounts.

A traditional pension is calculated in such a way that the entire pension payment is considered to be the RMD for that pension.  RMDs are calculated separately for IRAs and workplace plans and you must withdraw at least the amount of your RMD (or more) each year and report the income on your tax return.