April 18, 2016, is the due date to file your 2015 individual federal income tax return and pay any balance due. If you live in Maine or Massachusetts, you have until Tuesday, April 19, to file and pay.
Here’s why. The normal due date – Friday, April 15 – is Emancipation Day. That’s a holiday in the District of Columbia, so the tax filing deadline shifts to Monday, April 18. However, Monday, April 18, is also a holiday (Patriots Day) in Maine and Massachusetts. That means if you live in either of those states, your deadline moves to April 19. The extended due dates apply whether you file electronically or on paper.