According to Revenue Ruling 2015-13, April 18 will be the filing deadline for most of the country in 2016. Since Emancipation Day – a legal holiday in D.C. – falls on a Saturday, it will be observed on the preceding Friday, which just so happens to be April 15. Tax Day is further delayed in Massachusetts and Maine, since they observe Patriot’s Day on April 18: meaning that most residents of those states have until April 19 to file income tax returns next year.
To read the entire ruling, click here.
Source: Internal Revenue Service