Business owners filing taxes for an S corporation or partnership have less time to do their taxes. March 15 is the deadline to file your S corporation tax return (Form 1120-S) or Partnership return (Form 1065). If you’re an S corporation, see our full guide on S corp taxes and deadlines.

Note that S corporations and partnerships do not pay taxes on their income. That tax is paid on the individual incomes of the shareholders or partners, respectively.

March 15 is also the deadline to file for an extension for S corp and partnership tax returns.