If you did not file a 2020 tax return, the deadline for filing a tax return to claim the 2020 Recovery Rebate Credit of $1,200 was May 17, 2024. The deadline for filing to claim the 2021 Recovery Rebate Credit is April 15, 2025. If you did file but didn't claim the Recovery Rebate Credit, the deadline for filing an amended return to receive a refund (the Recovery Rebate Credit) is 3 years after the date you filed your original return or 2 years after the date you paid the tax, whichever is later.