To enter stimulus payments received in TurboTax, please follow these steps (if you do not qualify for the Recovery Rebate Credit, then the stimulus questions will not come up):
If you qualify for the Recovery Rebate Credit, then the stimulus payments received are entered on the Recovery Rebate Credit Worksheet line 16 (first stimulus) and line 19 (second stimulus).
To be eligible for the Recovery Rebate Credit you need to be a U.S. citizen or U.S. resident alien in 2020 and have a Social Security number that is valid for employment.
You cannot be claimed as a dependent by someone else to be eligible.
Your credit amount will be reduced if your 2020 adjusted gross income (AGI) is more than:
Your payment will be reduced by 5% of the amount by which your AGI exceeds the applicable threshold above. (IRS FAQ Recovery Rebate Credit )