IMPORTANT DEADLINE: Individuals, Corporations, S-Corps, Large Partnerships, Partnerships and International

INDIVIDUALS: Make a payment of your 2021 estimated tax if you are not paying your income tax for the year through withholding (or won’t pay in enough tax that way). Use Form 1040-ES. This is the third installment date for estimated tax in 2021. For more information, see Pub. 505. 

CORPORATIONS: For calendar year corporations, deposit the third installment of estimated income tax for 2021. A worksheet, Form 1120-W, is available to help you estimate your tax for the year. 

S-CORPORATIONS: File a 2020 calendar year income tax return (Form 1120-S) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension of time to file the return. Provide each shareholder with a copy of their final or amended Schedule K-1 (Form 1120–S) or substitute Schedule K-1 (Form 1120–S).

PARTNERSHIPS & LARGE PARTNERSHIPS:?File a 2020 calendar year return (Form 1065). This due date applies only if you timely requested an automatic 6-month extension. Otherwise, see March 16. Provide each partner with a copy of their final or amended Schedule K-1 (Form 1065) or substitute Schedule K-1 (Form 1065). 

INTERNATIONAL:?Final extended deadline to file Form 8804 if a 6-month extension was filed in March. 

Final extended deadline for Form 1042 if a 6-month extension was filed in March. 

Final extended deadline for Form 3520-A if a 6-month extension was filed in March. 

For additional information on these deadlines or our international services and tax services, please click here to contact us.