One of WHAT credits?
Anything entered as a retirement contribution on your W-2 in box 12 is included automatically. Nothing else to do.
Anything that shows as a contribution in box 14 of the W-2 is also take care of automatically, but cannot be used as part of the Retirement Savings Contribution Credit.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
