If you use a fiscal year (rather than the calendar year) as your tax year, you should change some of the dates in this calendar. Use the following general guidelines to make these changes.
The 3 months that make up each quarter of a fiscal year may be different from those of each calendar quarter, depending on when the fiscal year begins. Also see Saturday, Sunday, or legal holiday.
Form 1040. This form is due on the 15th day of the 4th month after the end of your tax year.
Estimated tax payments (Form 1040-ES). Payments are due on the 15th day of the 4th, 6th, and 9th months of your tax year and on the 15th day of the 1st month after your tax year ends.
Form 1065. This form is due on the 15th day of the 4th month after the end of the partnership's tax year. Provide each partner with a copy of Schedule K-1 (Form 1065) or a substitute Schedule K-1.
Form 1065-B (electing large partnerships). This form is due on the 15th day of the 4th month after the end of the partnership's tax year. Provide each partner with a copy of Schedule K-1 (Form 1065-B) or a substitute Schedule K-1 by the first March 15 following the close of the partnership's tax year.
Form 1120 and Form 1120S (or Form 7004). These forms are due on the 15th day of the 3rd month after the end of the corporation's tax year. S corporations must provide each shareholder with a copy of Schedule K-1 (Form 1120S) or a substitute Schedule K-1.
Estimated tax payments. Payments are due on the 15th day of the 4th, 6th, 9th, and 12th months of the corporation's tax year.
Form 2553. This form is used to choose S corporation treatment. It is due no more than two 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.
October 10 (Employees who work for tips)
If you received $20 or more in tips during September, report them to your employer - Details
October 13 (Everyone)
Federal Holiday (Columbus Day) - Details
October 15 (Individuals)
If you have an automatic 6-month extension to file your income tax return for 2013, file Form 1040, 1040A, or 1040EZ and pay any tax, interest, and penalties due - Details
October 15 (Partnerships)
Electing large partnerships: File a 2013 calendar year return (Form 1065-B). This due date applies only if you were given an additional 6-month extension - Details