Corporations

March 15, 2021

File a 2020 calendar year income tax return (Form 1120) and pay any tax due. If you want an automatic 6-month extension of time to file the return, file Form 7004 and deposit what you estimate you owe in taxes.

Deposit the first installment of estimated income tax for 2021. A worksheet, Form 1120-W, is available to help you estimate your tax for the year.