If a person is age 75, receiving RMD, and is still working receiving a W-2 each year, and he still contribute to that IRA each year?
https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-ira-contribution-li...
For 2020 and later, there is no age limit on making regular contributions to traditional or Roth IRAs.
Google is your friend!
Federal - OK to make the IRA contribution (see the links the other folks provided..).
CAVEAT tho - the State may not conform (CA doesn't...)
