You'll need to report your 1099-K as investment income if you made a gain on the sale of a personal item. This means if you sold a personal item for more than you paid for it, and the buyer paid you with an electronic payment, you'd report your 1099-K as investment income.
What are personal transactions on a 1099-K?
Where would I report 1099-K information?
Do all 1099-Ks have to be reported?
