Although it's identical to Form 1040, it features larger print and highlights specific benefits for seniors, like the additional standard deduction. Introduced by the Bipartisan Budget Act of 2018 ...

The form you must file to amend your return is 1040-X, the Amended U.S. Individual Income Tax Return. Up until August 2020, you had to print a hard copy of Form 1040-X and mail it to the IRS ...