Whatnot ProfitsWhatnot Profits

How to Calculate Your Whatnot Profit

Most Whatnot sellers know roughly what they sold, but far fewer know their actual profit after fees, costs, and expenses. Here's the formula, with real examples.

The Whatnot Profit Formula

Sale Price

£XX

Whatnot Fees

~11%

Cost of Goods

£XX

Other Costs

£XX

Net Profit

£??

Step-by-Step Breakdown

Step 1: Start With the Sale Price

This is the amount the buyer paid for the item (excluding shipping). You can find this in your Whatnot seller dashboard or weekly CSV export.

Step 2: Subtract Whatnot Fees

Two fees come off every sale: the 8% platform commission and the 2.9% + £0.30 payment processing fee. On a £25 sale, that's £2.00 + £0.73 + £0.30 = £3.03 in fees.See the full fee breakdown.

Step 3: Subtract Cost of Goods (COGS)

What did you pay for the item? If you bought a lot or pallet, you need to allocate the cost across individual items. Our lot cost allocator can help with this.

Step 4: Subtract Other Costs

Don't forget these common expenses:

  • Packaging — mailers, bubble wrap, tape, labels (typically £0.50–£2.00 per item)
  • Shipping — if you cover any or all of the postage
  • Giveaways — allocate giveaway costs across your paid sales
  • Returns / refunds — budget a percentage for buyer disputes

Step 5: Your Net Profit

What's left is your actual profit. Divide by the sale price and multiply by 100 to get your profit margin percentage.

Worked Examples

Example 1: Profitable Sale (Pokémon Booster Pack)

Sale price£18.00
− Platform fee (8%)-£1.44
− Processing fee (2.9% + £0.30)-£0.82
− Cost of goods (bought at)-£6.00
− Packaging (mailer + bubble wrap)-£1.20
− Shipping (seller-covered)-£2.50
− Giveaway allocation-£0.50
Net profit£5.54
Profit margin30.8%

Example 2: Loss-Making Sale (Low-Value Card)

Sale price£3.00
− Platform fee (8%)-£0.24
− Processing fee (2.9% + £0.30)-£0.39
− Cost of goods-£1.50
− Packaging-£0.80
− Shipping-£1.50
Net profit-£1.43
Profit margin-47.7%
This is a common trap — low-value auctions that go for less than expected. The £0.30 fixed fee plus packaging and shipping make it almost impossible to profit on sub-£5 sales. Use the safe start price calculator to avoid this.

What's a Good Profit Margin on Whatnot?

Below 15%

Danger Zone

One bad auction or refund wipes out your profit. Review your pricing and costs.

15–30%

Acceptable

You're making money but there's room to improve sourcing or pricing.

Above 30%

Healthy

Strong margins. You've got room for the odd bad auction or return.

Frequently Asked Questions

How do I calculate my Whatnot profit?▼
Subtract all costs from the sale price: Whatnot commission (8%), payment processing (2.9% + £0.30), your cost of goods, packaging, and any shipping you cover. The result is your net profit. Our free calculator does this automatically.
What is a good profit margin on Whatnot?▼
Most successful Whatnot sellers aim for 20–50% net margin after all fees and costs. Anything above 30% is considered healthy. Below 15% is risky — a single refund or underperforming auction can push you into a loss.
How much can you realistically make selling on Whatnot UK?▼
Earnings vary hugely. Part-time sellers doing 1–2 streams per week in categories like trading cards typically gross £200–£1,000/month. After all costs, net profit is usually 20–40% of that. Full-time sellers with established audiences can gross significantly more, but costs scale too.
Do I need to pay tax on Whatnot earnings?▼
Yes. In the UK, if your total self-employment income (including Whatnot) exceeds £1,000 per tax year, you need to register for Self Assessment and report it to HMRC. You can deduct legitimate business expenses (cost of goods, packaging, fees, shipping) to reduce your taxable profit.
What costs do Whatnot sellers forget to include?▼
The most commonly forgotten costs are: packaging materials (mailers, tape, bubble wrap), shipping on unsold returns, giveaway costs (items given away during streams to attract viewers), failed auctions where items sell below cost, and the time spent sourcing, listing, streaming, and packing.
How do giveaways affect my Whatnot profit?▼
Giveaways are a cost of doing business on Whatnot — they attract viewers who then bid on paid items. You should allocate the cost of giveaways across your paid sales to understand your true margin. For example, if you give away £20 worth of items in a stream and make 20 paid sales, that’s £1 per sale in hidden costs.

Stop Guessing, Start Tracking

Whatnot Profits automatically calculates your fees, margins, and real profit on every sale. Import your Whatnot CSV and see the numbers in seconds.

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