If you said yes to any of these, be prepared to receive a 1099-K from the Internal Revenue Service. Asking yourself what's a 1099-K? Don't panic. Here's what you need to know about this tax from.

If you're among them, you will likely receive Form 1099-K, which reports your gross transactions to the IRS. Understanding Form 1099-K, including verifying its accuracy and using it to properly ...