New York, NY—Everybody knows income taxes are due April 15—except when they aren’t. That only happens once every few years when April 15 falls on a weekend, as it does this year. Personal income taxes (IRS Form 1040) for 2016 are due Monday, April 17, this year.
But the old 1040 isn’t the only thing on the tax calendar. There are quarterly estimated taxes for self-employed businesspeople, due June 15, September 15, and January 16, 2018. Partnership returns (form 1065) are due on March 15, a full month before the April tax date, and so are S-type corporation taxes.