Every year, the IRS and the media put out lots of information and reminders about the due date for filing your federal tax return. The most common tax forms and due dates are as follows, but due dates vary if they fall on a weekend or holiday. You may refer to the tax form's instructions for the due date:
IRS Form 1040 series for individuals – April 15
IRS Form 1120 series for corporations – March 15
IRS Form 1065 series for partnerships – March 15 for years beginning after December 31, 2015.
Prior year partnership returns, April 15.
