Will the IRS figure the amount of taxes and credits for taxpayers?
If you choose, the IRS will figure your tax on Form 1040EZ (PDF), Form 1040A (PDF), or Form 1040 (PDF). Refer to Tax Topic 552, Tax and Credits Figured by IRS, for more information.
References:
Form 1040 (PDF), U.S. Individual Income Tax Return
Form 1040A (PDF), U.S. Individual Income Tax Return
Form 1040EZ (PDF), U.S. Individual Income Tax Return for Single and Joint Filers with No Dependents