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For most of the nation (for all US residents except for residents of MA or ME), the deadline to submit 2015 tax returns is THIS DATE, rather than the traditional April 15 date.
What is Monday, April 18, 2016.
*Note: It's a day later for residents of MA and ME, who have until Tuesday, April 19, 2016 to file. Why? Holidays:
•Washington, D.C. celebrates Emancipation Day, the anniversary of Lincoln's signing of the Emancipation Proclamation on April 15.
•Massachussetts and Maine celebrate Patriots Day, which commemorates the battles of Lexington and Concord in 1775, on April 18.