Retirement tax questions

...and...not asked about, but we need to note.

Do not enter your TSP contributions anywhere but on your W-2 entry in the software.  They are on your W-2 (box 12, Code "D", or code "AA" for a Roth TSP)), and when entered with the W-2 in the software, you don't enter them anywhere else.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*