Originally Posted by itsme
Just reflecting on this - Patriot's Day is a state holiday, and the IRS is of course a federal operation. Don't they deliver mail in MA today? (Again, it's another day of float for some this year. And while I don't know whose on top in the world of marathoning, I wonder if Americans have much of a chance against some of those countries that produce the perennial champs, e.g., Kenya, Ethiopa, etc.)
Yes, mail is delivered in MA. The Federal Government does not recognize statewide holidays except for the due date rule under Internal Revenue Code section 7503, and that applies only to IRS offices located in the state with the holiday.