Tax Day Is Monday: What to Know About Deadlines, Extensions, and Refunds

The deadline is 11:59 p.m. on Monday, April 15.

A 1040 form used by U.S. taxpayers to file an annual income tax return in a file photo. Joe Raedle/Getty Images

Monday, April 15 is the deadline to file federal income tax returns and extensions to the Internal Revenue Service (IRS) for most people.

The IRS said on April 12 that it has received more than 100 million returns, but millions more returns are expected to be filed by the end of April 15.