Form 1040 and 1040-SR Helpful Hints Form 1040 and 1040-SR Helpful Hints For 2021, you will use Form 1040 or, if you were born before January 2, 1957, you have the option to use Form 1040-SR.Many people will only need to file Form 1040 or 1040-SR and none of the numbered schedules, Schedules 1 through 3. However, if your return is more complicated (for example, you claim certain deductions or owe additional taxes), you will need to complete one or more of the numbered schedules. Below is a general guide to what schedule(s) you will need to file based on your circumstances. See the instructions for the schedules for more information. If you e-file your return, you generally won’t notice much of a change and the software you use will generally determine what schedules you need.IF YOU have additional income such as capital gains, unemployment compensation, prize or award money, gambling winnings; have any deductions to claim, such as student loan interest, self-employment tax, educator expenses. THEN USE Schedule 1.IF YOU owe AMT or need to make an excess advance premium tax credit repayment. THEN USE Schedule 2, Part I.IF YOU owe other taxes, such as self-employment tax, household employment taxes, additional tax on IRAs or other qualified retirement plans and tax-favored accounts. THEN USE Schedule 2, Part II.IF YOU can claim a nonrefundable credit (other than the child tax credit or the credit for other dependents), such as the foreign tax credit, education credits, general business credit. THEN USE Schedule 3, Part I.IF YOU can claim a refundable credit (other than the earned income credit, American opportunity credit, refundable child tax credit, additional child tax credit, or recovery rebate credit), such as the net premium tax credit, health coverage tax credit, or qualified sick and family leave credits from Schedule H or Schedule SE. Have other payments, such as an amount paid with a request for an extension to file or excess social security tax withheld or have a deferral of tax (for certain Schedule H and Schedule SE filers). THEN USE Schedule 3, Part II.