GavelMath
Know your profit before you buy or sell.
A free Whatnot fee calculator, profit calculator and show tracker. See what you keep after Whatnot's commission and payment processing fees, before you start the auction or buy the lot.
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What do I actually keep?
Enter one sale. Commission comes off the item price; payment processing is charged on the whole order, including the buyer's shipping and tax.
- Sale price
- Commission
- Processing (order )
- Whatnot payout
- Item cost
- Shipping + supplies
- Profit margin
What's the lowest I can let it go for?
Use this to set a starting bid or a buy-it-now floor. The break-even price is where profit hits $0 after every fee.
- You keep per $1 of sale
- Fixed costs to cover
Starting an auction below break-even means a $1 opening bid that ends there loses money. Use the floor as your minimum.
How much can I pay for this?
Before you buy a lot, work backward from what each item will sell for to the most you can pay and still hit your margin.
- Max per item
- Net per item before cost
- Break-even lot price
- Profit at asking price
Assumes every item sells at the expected price. If you usually sell 80% of a lot, lower the item count to match.
Check a whole supplier list at once
Paste or upload a CSV with columns item, cost, price and optional category (general, electronics, coins) and shipping. Every row is checked against your target margin. Free shows the summary for the whole list and details for the first 10 items.
| Item | Cost | Price | Fees | Profit | Margin | Max cost | Verdict |
|---|
Track every item, before and after the show
Add your inventory before you go live, tap Sold or Giveaway as items go, and see your real profit for every show.
| Item | Paid | Expected | Est. profit | Status | Actions |
|---|
In stock
Sold and given away this show
Import your Whatnot Weekly Orders Report
Fills in your sales, actual fees, giveaways, refunds, tips and shipping charges, grouped by show. Get it at whatnot.com on a computer: your icon → Financials → Statements → Download. The file stays in your browser.
We couldn't find some columns automatically. Tell us which column holds each one.
Shows
Hours come from when you started and ended the show. Change them if you forgot to press End show.
| Show | Date | Hours | Sold | Sales | Giveaways | Profit | Per hour | Recap |
|---|
Your show recap
Share it on Instagram, Facebook or in your Whatnot group. On a phone, press and hold the image to save it.
Download imageSold items
When your Whatnot statement arrives, type the actual fees for any sale to replace our estimate. Use Refund if a buyer was refunded.
| Item | Show | Paid | Sold for | Whatnot fees | Refund | Profit | Actions |
|---|
Business expenses
Costs that aren't tied to one item: supplies by the box, ring lights, storage, subscriptions, mileage.
| Date | What for | Type | Amount | Actions |
|---|
Yearly summary PRO
A summary for your records and your tax preparer. It's not tax advice, and it can't replace your Whatnot 1099-K or bookkeeping.
Your tracker is saved in this browser on this device. Use Export CSV backup regularly. With Pro, it also syncs to your account so you can use it on your phone and computer.
See how it works in one minute
Three questions every Whatnot seller asks: what do I keep, what's the lowest price I can take, and how much can I pay for a lot. Large text, captions on, no sign-up.
Whatnot fee rates used
Since September 21, 2026, Whatnot's US commission depends on your total sales over the previous four weeks. Pick your level below and the calculators use that rate. Processing is 2.9% + $0.30 on the full order, including shipping and tax. Category rates (electronics, coins) can differ, so check your Seller Hub statement and change any rate here if yours differs. Your changes are saved in this browser.
Free to start. Pro when you sell every week.
The calculators stay free. Pro is for sellers who run regular shows and source in bulk: unlimited show tracking and full supplier-list checks.
Free $0
- Profit after Whatnot fees
- Break-even and target price
- Max buy price for a lot
- Bulk check: summary for your whole list, details for 10 items
- Show tracker for up to 25 items, with lot splitting, giveaways, refunds, profit per hour and show recap images
- Import your Whatnot Weekly Orders Report (up to the 25-item limit)
- Editable fee rates
Pro $9 / month
or $90 / year, 2 months free
Founding member price: subscribe now and keep it for as long as you stay subscribed.
- Everything in Free
- Unlimited show tracking: inventory, live sales and results for every show
- Import every sale from your Whatnot Weekly Orders Reports
- Yearly summary of sales, fees, costs and expenses for your tax preparer
- Bulk check with every item in detail, including the max cost to pay
- Export results as CSV
- Your tracker syncs between your phone and computer
- Cancel any time
You're Pro
Pro checkout opens soon. Coming later to Pro: eBay and Etsy fees.Whatnot fees, explained
How much does Whatnot charge sellers?
Since September 21, 2026, Whatnot's US commission depends on your sales over the previous four weeks: 8% under $15,000, then 7% at $15,000, 6.5% at $35,000, 5.5% at $50,000, 5% at $100,000 and 4.5% at $250,000, with custom rates as low as 3% for the biggest sellers. Commission is charged on the item price, and rates can vary by category. Payment processing is 2.9% + $0.30 per order. At 8%, a $40 card with $5 shipping and 7% sales tax costs $3.20 commission and $1.69 processing, so Whatnot takes $4.89. Choose your sales level under Whatnot fee rates used below.
Does the processing fee include shipping and tax?
Yes. The commission is charged on the item price only, but the 2.9% + $0.30 processing fee is charged on the whole order: item price, the shipping the buyer pays and sales tax. Many simple calculators miss this. GavelMath includes it.
Who pays for shipping on Whatnot?
Usually the buyer pays shipping, and it covers the prepaid label, so it isn't part of your payout. You only pay shipping yourself when you offer free or discounted shipping. Enter that amount under Shipping you cover.
What's the lowest price I can sell an item for?
Your break-even price is the sale price where Whatnot fees, supplies and what you paid add up to exactly the sale price, leaving $0 profit. For an item that cost you $18, it's $21.59. Use the Break-even price calculator to set a safe starting bid.
How much should I pay for a lot?
Work backward from what each item will sell for. The Max buy price calculator takes the expected sale price, the number of items and the margin you want, and tells you the most you can pay for the whole lot. Fifty items that sell for $12 each are worth up to $263.63 at a 35% margin.
Is GavelMath free?
Yes. The profit, break-even and max buy calculators are free with no sign-up, and the show tracker is free for up to 25 items. Pro is $9 a month or $90 a year for unlimited show tracking, a yearly summary, full supplier-list checks and CSV export. Early subscribers keep that founding member price for as long as they stay subscribed.