USPS is offering extended hours on tax day at some locations. Click here to find out if your post office is offering extended hours.

This year your Tax return is considered filed if postmarked by April 17.

If you live in Maine, Maryland, Massachusetts, New Hampshire, New York, Vermont, or the District of Columbia April  your tax return must be postmarked by April 18.
In the Columbus Ohio area 9 locations will stay open until midnight for last-minute tax filers on April 17. “Because April 15 falls on a Saturday, the Internal Revenue Service is allowing people to mail income-tax returns on the next business day, said Lue C. Terry, spokeswoman for the Columbus district of the postal service. Some living in the Northeast may mail their tax returns on April 18 because a state holiday in Massachusetts will affect an IRS processing facility there, the IRS said.” Columbus Dispatch

The U.S. Postal Service in Montgomery (Alabama) is prepared to stay open late to accommodate last-minute filers. To offer additional service to customers, the window service at the General Mail Facility, 6701 Winton Blount Blvd., will remain open until 8 p.m. on April 17. Also, mail may be deposited at this location until midnight and still receive the April 17 postmark. Montgomery Advertiser