After you file


@kayleeann47 wrote:

Right but the IRS verifies don't they? 


If you filed your tax return and entered either no 3rd stimulus amount or an incorrect amount the IRS knows if they sent you a 3rd stimulus or not.  They will adjust your tax return accordingly if it is incorrect.  If you are due a tax refund this will delay the refund by several weeks if not longer.

You do not need to amend the 2021 tax return you filed.