Do-it-yourself tax software allows e-filing only for the current tax year. Even for tax professionals, the IRS allows e-filing only for the current year and two prior years. So only 2024, 2023, and 2022 can be e-filed now. The IRS no longer allows e-filing for 2021.
You have not said what was miscalculated on the 2021 tax return that you filed. What did the IRS say was wrong on the return?
