The U.S. Postal Service is keeping some Bay Area offices open late Wednesday to accommodate last-minute filers.
Postal Service spokesman Jim Wigdel said he usually spends the evening of the federal tax deadline on the curb observing the crowds at the San Francisco processing plant.
There was a marked drop in cars last year, he said, as more people file online. The Internal Revenue Service expects 65 percent of filers to send their information over the Internet.
However major post offices still offer late-night hours and curbside service, he said, to process mail efficiently.
"We'll have employees out there to sort the mail by hand and put federal and state returns in the right places," he said of the curbside service.
The following post office facilities will offer special hours on April 15:
All other post offices will be open for normal hours. Wigdel said patrons should make sure they have affixed correct postage before mailing their tax documents. It costs 42 cents for the first ounce and 17 cents per additional ounce, according to the U.S. Postal Service. An ounce is generally four pages.