The third stimulus payment is sent by the IRS and not requested or reported on the 2020 tax return.
Go to this IRS website for get my payment information - https://www.irs.gov/coronavirus/get-my-payment
The first and second stimulus payments are reported on the 2020 federal tax return. If you did not receive one or both payments they will be included on the 2020 federal tax return, if you are eligible to receive the Recovery Rebate Credit on the 2020 return, as a tax credit on Form 1040 Line 30. The credit will be included in the federal tax refund or will reduce the federal taxes owed.
