So you messed up. You mailed your payment to the Utah address when you live in Florida. Don’t freak out. The IRS is a giant machine, but it’s not stupid—they’ll forward it to the right center. However, it might take an extra two to four weeks to process. Meanwhile, interest and penalties might start ticking. Not fair, I know, but that’s the price of a stamp-address mix-up.
Best move? If you realize you sent it wrong, call the IRS (and pack a lunch—hold times are legendary). They can note your account so you don’t get hit with a late fee. Or, if you’re really nervous, just pay online immediately and cancel the check. Two payments is better than a penalty—and you’ll get the first check back eventually.