That is correct.  Stimulus payments were advances on the Recovery Rebate Credit.  

If you didn't receive the full amount for your first or second-round stimulus payments, we'll help you claim the Recovery Rebate Credit when you file your taxes this year.

We'll make sure you get the money you qualify for by double-checking the amount and quantity of stimulus payments you received.

Here’s how:

• Enter all of your federal return information as you would normally. During the Federal Review, we’ll check if you meet eligibility requirements for the stimulus payment. If you meet the requirements, you'll see a Did you get a first or second stimulus? screen. We'll ask a few questions about any payments you've already received and then let you know if the Recovery Rebate Credit applies.
  • If you need to make any changes to your stimulus credit responses, search for stimulus and select the jump-to link at the top of the search results to return back to the section. Enter your updated info and Continue.

For additional information, see  How do I claim the Recovery Rebate Credit in TurboTax?