At the beginning of the Federal Review in TurboTax it asks you how much you received for each stimulus payment. That's where you tell TurboTax how much you actually received. If you didn't get the full amount that you are entitled to, TurboTax will give you the recovery rebate credit on your tax return for the amount that you didn't get.
You can also get to the question by typing "stimulus" (without the quotes) in the Search box, then clicking the link that says "Jump to stimulus."
If the Adjusted Gross Income (AGI) on your 2020 tax return is more than $150,000 (for married filing jointly) the stimulus payment is phased out, depending on how much higher your AGI is. In that case, you might not be entitled to any additional payment.
At what point are you getting this message? There is a page in Federal Review that asks you what you received.
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