Taxpayers across the United States receive a slight time break in 2011 as the IRS tax filing deadline for 2010 tax forms is extended to April 18 due to a holiday in Washington, D.C. The holiday, Emancipation Day, is officially April 16. On April 16, 1862, then President Abraham Lincoln released persons who were slaves in the District of Columbia when he signed the Compensated Emancipation Act. 3,100 D.C. slaves were freed through this action that occurred nine months prior to Lincoln’s signing of the greater Emancipation Proclamation. The observance has been celebrated since 1866 through 1901, and again from 2002 until the present time.

Why the 2011 Tax Filing Deadline for 2010 Tax Forms is ExtendedThis holiday was made official by D.C. Mayor Anthony Williams on January 4, 2005. Official celebrations include an Emancipation Day parade and other activities. All municipal and federal offices will be closed on Friday, April 15, 2011, the day that normally would be a final due date for filing IRS 1040 tax forms. The change in celebration of this legal holiday is required by D.C. statues because the holiday falls on a Saturday. This adjustment is unique to the District of Columbia, and under law the observance of this holiday in Washington, D.C. affects tax deadlines just as a federal holiday would in all states.