If you’ve opened your mailbox and found IRS Notice CP53E, you’re not alone. More than 1.4 million taxpayers have received this notice in 2026 as the IRS transitions away from paper refund checks and toward mandatory electronic payments.

There’s nothing quite like opening the mailbox, seeing an envelope with “Internal Revenue Service” printed on it, and feeling your stomach drop. Even people who are perfectly organized — even people who’ve done everything right — feel the same jolt of panic when they receive an IRS notice.