The first thing you need to accept is that there isn’t just one magical IRS mailbox. Oh, no. That would be too easy. The address you use depends on a weird little formula: which form you’re filing and which state you live in. Seriously.
If you live in California but file a 1040-ES (estimated tax), you send it to one spot. If you live in Oregon and file a 1040 with a payment? Different spot entirely. It’s like a secret handshake, but written on a stamp. And don’t even get me started on the irs.com website—it’s a maze.
