Photo by Victoria Pickering.

Taxpayers across the country will have another three days to put off doing their taxes next year.

The IRS has announced that the filing deadline will be on April 18, 2016 because D.C. is celebrating Emancipation Day on Friday, April 15 (the actual anniversary of President Abraham Lincoln signing a bill to end slavery in the District is on the 16th, but that falls on a Saturday next year, so the holiday will be observed the day prior).

Although Emancipation Day is only recognized locally—and even then, many employers don’t observe it—for tax purposes, D.C. holidays affect the nation. According to the IRS:

“By law, filing and payment deadlines that fall on a Saturday, Sunday or legal holiday are timely satisfied if met on the next business day. Under a federal statute enacted decades ago, holidays observed in the District of Columbia have an impact nationwide, not just in D.C.”

The confluence of Tax Day and Emancipation Day also pushed back filing deadlines in years past to April 17, 2007 and April 18, 2011.