I sell vintage items on eBay and Poshmark and the 1099-K threshold changes have been an absolute headache. Let me share what I have learned about the current state of the law and how it actually works in practice.
Under the American Rescue Plan Act of 2021, the 1099-K reporting threshold was supposed to drop from $20,000 and 200 transactions to just $600 with no transaction minimum. However, the IRS delayed implementation multiple times. For tax year 2024, the IRS set a transitional threshold of $5,000, and for 2025 and beyond, it is expected to be $2,500 before reaching the final $600 threshold.
The important thing to understand is that receiving a 1099-K does not necessarily mean you owe taxes on the full amount. If you are selling personal items at a loss (which is common for casual sellers), that is not taxable income. The problem is proving it. The IRS will match the 1099-K to your return, and if they do not see corresponding income reported, you will get a CP2000 notice asking about the discrepancy.
My practical advice: keep records of what you originally paid for items you sell. Take photos of price tags, save original purchase receipts, keep credit card statements. When you sell a vintage jacket you bought for $200 at $150, that is a $50 loss, not $150 in income. Report the gross amount on Schedule C or Schedule 1, then deduct your cost basis to show the net result. If you do not have original receipts, the IRS may accept a reasonable estimate based on comparable items, but documented costs are always better.