First Steps : Input return>Miscellaneous Form>Amend Return (1040-X)>General Information and Federal (1040X)Check > Apply 1040-X overpayment to 2021 estimated tax>Year to apply overpayment to [Override]> Enter the year that you want it applied to.


Second Steps: Input return> Payments, Penalties, & Extensions > 2021 Estimated Tax (1040-ES,W-4,W-4P)>2021 Estimated Tax (1040-ES)>Federal & State>General Information>Apply overpayment to 2021>Select option 7>Apply Entire Refund No estimates