Individuals

March 15, 2021

File a 2020 Form 1040 or Form 1040-SR and pay any tax due. If you want an automatic 6-month extension of time to file the return, file Form 4868 and pay what you estimate you owe in tax to avoid penalties and interest. For more information, see Form 4868. Then, file Form 1040 or Form 1040-SR by October 15.

If you’re not paying your 2021 income tax through withholding (or won’t pay in enough tax during the year that way), pay the first installment of your 2021 estimated tax. Use Form 1040-ES. For more information, see Pub. 505.