It depends on where it is on your W-2. Deductible contributions are reflected by an entry in box 12 with code D. TurboTax will pick that up automatically and you should not re-enter it. If you have voluntary, non deductible contributions, shown somewhere else (usually box 14), that should be entered separately (TT will not pick it up automatically).
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The Retirement Savings Contributions Credit (“Saver’s credit”) is very limited and is for low income people. See the table on Form 8880: https://www.irs.gov/pub/irs-pdf/f8880.pdf
You, or your spouse, must not have taken money out of a retirement account (including drawing a pension) in the last three years. See line 2 on form 8880.
It is not a refundable credit. You must have a tax liability to take the credit against.
TurboTax (TT) will check this automatically when it sees you made a qualified contribution. If you want to verify that happened; enter in TT at:
Federal Taxes Tab
Deductions & Credits
-Scroll down to:
-Retirement and Investment
- Retirement Savings Contribution Credit
