Only one post office will be open until midnight on tax day

Go ahead and work late on that tax return.

But don't forget to leave time to get it to the one area post office that will be open super late this Wednesday.

The U.S. Postal Service will have only its giant processing and distribution center at 1700 Cleveland St. open until midnight on Wednesday. Here's a map on how to get there off Interstate 70.

The Shawnee Mission post office at 6029 Broadmoor St. will stay open until 7:30 p.m. Wednesday. Here'sa map on how to get there.

The main post office at 30 W. Pershing Road will remain open until 6 p.m., its normal closing time.

In short, don't count on the local post office waiting around to bless your tax return with an April 15 post mark. They simply won't be there after hours.

And that will mean penalties and interest from the IRS, on top of whatever you still owe.

This is the second year post offices won't be staying open late on tax day. It simply costs them too much.