Important Tax Dates

Individuals

Form 1040: Due by the 15th day of the 4th month following the close of your tax year. (If you need more time to file Form 1040, use Form 4868 to request a tax extension.)

Form 1040-ES (Estimated Tax): Quarterly payments are due in equal installments on the 15th day of the 4th, 6th, and 9th months of your tax year, as well as on the 15th day of the 1st month after your tax year ends.

Partnerships

Form 1065: Due by the 15th day of the 4th month following the close of the partnership’s tax year. Provide each partner with a copy of their Schedule K-1 (Form 1065) or substitute Schedule K-1. (If you need more time to file Form 1065, use Form 7004 to request a tax extension.)

Form 1065-B (Electing Large Partnerships): Due by the 15th day of the 4th month following the close of the partnership’s tax year. Provide each partner with a copy of their Schedule K-1 (Form 1065-B) or substitute Schedule K-1 by the first March 15 following the end of the partnership’s tax year.

Corporations & S Corporations

Forms 1120 & 1120S: Due by the 15th day of the 3rd month following the close of the corporation’s tax year. S corporations must provide each shareholder with a copy of their Schedule K-1 (Form 1120S) or substitute Schedule K-1. (If you need more time to file Form 1120 or Form 1120S, use Form 7004 to request a tax extension.)

Estimated Tax: Quarterly payments are due in equal installments on the 15th day of the 4th, 6th, 9th, and 12th months of the corporation’s tax year.

Form 2553 (Election by a Small Business Corporation): This form is used to select S corporation treatment. Is it due within 2 months and 15 days after the beginning of the tax year the election is to take effect, or at any time during the preceding tax year.