FeeMath

Free Reseller Spreadsheet and Profit Tracker

Track what you paid, what you sold for, the platform fee and your real profit for every item. Download a free CSV template, or use our free online tracker that calculates fees for you.

Updated October 30, 2026 · fees checked October 2026

What a reseller spreadsheet should track

ColumnWhy it matters
Item / SKUFind it fast when it sells
Cost of goodsYour real starting point
Date bought / soldShows slow stock
PlatformFees differ a lot
Sale priceBefore fees
Fees20% Poshmark vs 10% Mercari, etc.
Shipping paidIf you offered free shipping
ProfitSale - cost - fees - shipping

Get the template

Download free CSV template

Opens in Excel, Google Sheets or Numbers. Prefer it done for you? The free FeeMath profit tracker fills in fees for eBay, Poshmark, Mercari, Depop, Etsy, Facebook Marketplace and Whatnot automatically and keeps your data in your browser.

The profit formula

Profit = sale price - platform fees - shipping you paid - cost of goods. Example: a jacket bought for $8 and sold on Poshmark for $40 makes $40 - $8.00 fee - $0 shipping (buyer paid) - $8 = $24.00.

Tips for tax time

  • Log every purchase the day you buy it, with receipts.
  • Track mileage to thrift stores and the post office.
  • Keep sold and unsold inventory separate.
  • Ask a tax professional about your situation; this isn't tax advice.

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FAQ

Is the reseller spreadsheet free?

Yes. The CSV template is free, and the online tracker is free for your first 50 sales.

Does it calculate platform fees?

The online tracker does, for 7 platforms. In the CSV you enter the fee yourself, or use our fee calculators.

Where is my data stored?

In the online tracker, on your own device in your browser. Export to CSV any time.

Can I use it in Google Sheets?

Yes, import the CSV into Google Sheets.

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