Multi-Platform Reseller Profit + Inventory Tracker

Know what each flip really made after eBay, Poshmark, Mercari, Depop, Vinted, Facebook Marketplace or Etsy took their fees. For resellers in the US, UK and Canada.

Log an item when you buy it and the sale when it sells. The tracker works out each platform’s fee from its published rules for your country, then shows payout, profit, margin and days to sell. Red rows show sales that lost money after fees and shipping; amber rows show stock unsold for 90 days or more.

It keeps a running count per platform against the US Form 1099-K line, the UK HMRC reporting line and the Canada CRA line, and shows the Canadian GST/HST small-supplier line, as information. A Compare tab shows what one sale would leave you on every platform, and the monthly P&L includes sourcing mileage at the official IRS or HMRC rate.

Inside the zip: an Excel workbook (also works in Google Sheets and Numbers), the same tracker as an offline web page, and a quick-start guide. Every fee sits on one Rates sheet with the date checked and its source.

Estimates for planning only, not tax, legal or financial advice. Rules checked against official sources on 2 November 2026; check them before you act. Not affiliated with any platform named.