How to Calculate Your Real Profit Margin as an Online Seller (Fees, Shipping and VAT)
Your real profit margin is what is left after every cost of a sale, divided by the price you sold it for. That means taking off marketplace fees, the product cost, the postage and packaging you pay, any other per-order costs and, if you are VAT-registered, the VAT you owe. The honest number is often much lower than the quick "price minus cost" guess: in the examples below, by $4 to $33 per sale. Below is the exact formula, three worked examples for very different shops, and how to set a price that hits the margin you want.
The formula
Profit margin = net profit ÷ selling price × 100
Net profit is everything you receive for an order minus everything that order costs you:
Net profit = item price + shipping charged − marketplace fees − product cost − postage & packaging − other per-order costs − VAT owed
Two notes on how we use these terms on this site:
- Selling price means the item price shown in your listing, not including the shipping you charge. Our calculator divides by this number, and so do the examples below.
- Product cost is what one unit costs you to buy or make: materials, wholesale price, inbound freight. If you make products by hand, your own time is not in this number. Keep that in mind when a margin looks generous.
What belongs in "costs" (the list most sellers skip)
Before the examples, here is the checklist we use. If a cost happens because an order happened, it belongs in the calculation:
- Percentage fees - the marketplace's commission and payment processing. These are usually charged on the item price plus the shipping you charge, so moving money from the price into shipping does not avoid them.
- Fixed fees per order - small amounts like $0.25 or $0.40. They barely matter on a $150 order and hurt a lot on a $10 one.
- Postage - what you pay the carrier, even when the buyer sees "free shipping".
- Packaging - boxes, mailers, tissue, tape, labels, inserts. Often $0.50 to $2 per order and almost always forgotten.
- Advertising attributed to the sale - for example, Etsy Offsite Ads or promoted listings.
- Returns and breakage - if 1 in 20 orders comes back, one twentieth of that cost belongs to every order.
- VAT or GST if you are registered and your prices include it.
Example 1: a US Etsy candle shop, where fixed fees bite
Maria makes soy candles in jars and sells them on Etsy in the US. Each candle costs her $5.50 in wax, jar, wick and fragrance. She charges buyers $4.00 for shipping, but postage costs her $5.00, and the box, padding and label add $1.50.
Etsy's US fees are a $0.20 listing fee, a 6.5% transaction fee on the item price plus shipping, and 3% + $0.25 payment processing (Etsy Fees & Payments Policy and Etsy Payments Policy, checked 2026-10-14). Our calculator rolls these into 9.5% + $0.45 per order.
Here is what she keeps at different candle prices, calculated with the same formula as our profit calculator:
| Candle price | Etsy fees | Fees as % of price | Net profit | Real margin | "Price − cost" guess |
|---|---|---|---|---|---|
| $10.00 | $1.78 | 17.8% | $0.22 | 2.2% | $4.50 |
| $14.00 | $2.16 | 15.4% | $3.84 | 27.4% | $8.50 |
| $18.00 | $2.54 | 14.1% | $7.46 | 41.4% | $12.50 |
| $22.00 | $2.92 | 13.3% | $11.08 | 50.4% | $16.50 |
| $26.00 | $3.30 | 12.7% | $14.70 | 56.5% | $20.50 |
Each row: shipping charged $4.00, product cost $5.50, postage & packaging $6.50, no VAT.
What the table shows:
- At $10 she is working for 22 cents. The quick guess says $4.50. The gap is fees ($1.78) plus the $2.50 she loses on shipping.
- Fees take a bigger share of cheap orders. The $0.45 fixed part and the 9.5% charged on the $4 shipping are the same whatever the candle costs, so at $10 total fees eat 17.8% of the price, and at $26 only 12.7%.
- Her break-even price is $9.76. Below that, every sale loses money.
One practical fix for low-priced products is to raise the order size. If Maria lists a two-candle set at $28 (shipping still $4, product cost $11, postage and packaging $7.50), she keeps $10.01 on one order. Two separate $14 orders would leave her $7.68 in total. One set of fixed fees and one box go a long way. For a full breakdown of each Etsy fee, see our Etsy fees guide.
Example 2: an eBay seller, at a mid price and a higher price
Now a general eBay seller. For most categories, eBay charges a final value fee of 13.6% of the total sale plus $0.40 per order over $10 ($0.30 for orders of $10 or less) (eBay selling fees, checked 2026-10-14). Some categories have different rates, so check yours.
A $29.99 item with free shipping, $10 product cost and $5 postage and packaging:
| Item | Amount |
|---|---|
| Sale price | $29.99 |
| eBay fees (13.6% + $0.40) | −$4.48 |
| Product cost | −$10.00 |
| Postage & packaging | −$5.00 |
| Net profit | $10.51 |
| Profit margin | 35.0% |
That is about $9.50 less than the "$30 − $10 = $20" guess.
A $149 used camera lens with free shipping, bought for $70, with $12 for insured postage and packaging: eBay fees come to $20.66, and the seller keeps $46.34, a 31.1% margin. The quick guess says $79.
At higher prices the fixed $0.40 stops mattering, and the percentage fee becomes the main cost. A 13.6% fee on $149 is more than the whole $12 shipping bill. That is why sellers of higher-priced items compare marketplaces mostly on the percentage rate, while sellers of cheap items should look closely at fixed fees too. Our Amazon vs eBay vs Etsy comparison runs the same product through each marketplace.
One more eBay detail: the percentage is charged on the total sale, including sales tax collected from the buyer. Our calculator leaves sales tax out, so on eBay the real fee is slightly higher. If a buyer paid, for example, 8% sales tax on the $149 lens, the fee would be about $1.62 more. See our eBay fees guide for the details.
Example 3: a UK seller who is VAT-registered
In the UK, you must register for VAT once your taxable turnover goes over £90,000 in 12 months, and you can register voluntarily below that (GOV.UK: Register for VAT, checked 2026-10-14). The standard rate is 20% (GOV.UK: VAT rates, checked 2026-10-14).
When your prices include 20% VAT, one-sixth of every VAT-inclusive amount is VAT, not your money. You can usually reclaim the VAT included in your business costs, so a simple estimate of what you owe on one sale is:
VAT owed = (sales − costs − fees) × rate ÷ (1 + rate)
Our calculator uses this estimate. Not every cost includes VAT you can reclaim, so your real VAT bill can be higher. Your accountant or your VAT records will show the exact figure.
Tom sells handmade leather keyrings on Etsy from the UK for £24 with free shipping. Each costs £6 to make, and postage and packaging cost £4.50. UK Etsy sellers pay 4% + £0.20 payment processing (Etsy Payments Policy, checked 2026-10-14), a 0.48% Regulatory Operating Fee on the item price plus postage (Etsy Help: What is a Regulatory Operating Fee?, checked 2026-10-14), plus the 6.5% transaction fee and the $0.20 USD listing fee. The listing fee is charged in US dollars, so we count it as about £0.15; that is our own estimate and it moves with the exchange rate. Together that is 10.98% + £0.35 before VAT.
Etsy's listed fees exclude VAT. If you have not added a VAT ID to your Etsy account, Etsy charges VAT on your seller fees; if you have added one, it does not (Etsy Help: How VAT Is Collected on Seller Fees, checked 2026-10-14). So in the calculator's fee editor, a seller who is not VAT-registered enters the fees with 20% VAT added, 13.18% + £0.42, and a VAT-registered seller enters 10.98% + £0.35.
| Not VAT-registered | VAT-registered (20%) | |
|---|---|---|
| Sale price | £24.00 | £24.00 |
| Etsy fees | −£3.58 | −£2.99 |
| Product cost | −£6.00 | −£6.00 |
| Postage & packaging | −£4.50 | −£4.50 |
| VAT owed (estimate) | £0.00 | −£1.75 |
| Net profit | £9.92 | £8.76 |
| Profit margin | 41.3% | 36.5% |
| Price for a 30% margin | £19.22 | £20.47 |
The VAT-registered seller keeps £1.16 less on this sale, even though Etsy stops charging VAT on its fees. One caution: the calculator's estimate subtracts the fees as if they contained VAT you can reclaim. When you have a VAT ID, Etsy charges no VAT on its fees, so there is nothing to reclaim on them and the real VAT bill on this sale is about £0.50 higher. Costs on which you paid no VAT work the same way. If you are close to the threshold, plan your prices for VAT before you cross it, not after.
Margin vs markup
These two words are often mixed up, and the difference matters when you set prices.
- Margin = profit ÷ selling price. In the $29.99 eBay example: $10.51 ÷ $29.99 = 35.0%.
- Markup = profit ÷ cost. The same sale is a 70% markup on $15 of product, postage and packaging.
To convert a margin into the markup you need: markup = margin ÷ (1 − margin).
| Target margin | Equivalent markup |
|---|---|
| 20% | 25.0% |
| 25% | 33.3% |
| 30% | 42.9% |
| 40% | 66.7% |
| 50% | 100.0% |
A common mistake is to add "30% on top of cost" and believe you have a 30% margin. You have about 23%, and that is before fees.
Break-even price and pricing backwards from a target margin
Instead of guessing a price and checking the margin, decide the margin you need and work out the minimum price. Without VAT:
Minimum price = (product cost + postage & packaging + other costs + fixed fee − shipping charged × (1 − fee %)) ÷ (1 − fee % − target margin)
Set the target margin to 0 and you get the break-even price.
Check it with the $29.99 eBay item and a 25% target: ($10 + $5 + $0.40) ÷ (1 − 0.136 − 0.25) = $15.40 ÷ 0.614 = $25.08, which the calculator rounds up to $25.09 so you never fall short. The break-even price for that item is $17.83.
| Example | Break-even price | Price for 25% margin | Price for 30% margin |
|---|---|---|---|
| Etsy candle (US) | $9.76 | $13.49 | $14.60 |
| eBay $29.99 item | $17.83 | $25.09 | $27.31 |
| eBay camera lens | $95.38 | $134.21 | $146.10 |
| Etsy keyring (UK, VAT-registered) | £12.19 | £18.39 | £20.47 |
Two things to notice. First, the denominator shrinks fast: on a 13.6% fee, a 50% target margin divides by only 0.364, so prices climb steeply. If (1 − fee % − target margin) is zero or negative, no price can reach that margin with those fees. Second, with VAT the formula changes, because VAT is taken out before your margin. The calculator handles both cases, so you do not have to do the algebra by hand.
What about income tax?
Every profit figure on this page is before income tax. What you pay depends on your total yearly profit, your other income, allowances, your business structure and where you live. A product with a 35% margin does not leave you 35% to spend. Talk to an accountant about your situation, especially before your first tax year as a seller.
Key takeaways
- Real margin = net profit ÷ item price, after fees, postage, packaging, other costs and VAT.
- Percentage fees are usually charged on shipping too, and fixed fees hit cheap items hardest. In our Etsy example, fees took 17.8% of a $10 candle and 12.7% of a $26 one.
- On higher-priced items, the percentage fee is the cost to watch.
- VAT-registered sellers should take one-sixth (at 20%) out of VAT-inclusive prices before calling anything profit.
- Margin and markup are different. A 30% markup is only about a 23% margin.
- Set prices backwards from a target margin, and know your break-even price for every product.
FAQ
What is a good profit margin for an online seller? There is no single right number. It depends on your category, volume and how much of your own time goes into each item. What matters most is that the margin is calculated after every cost, and that it still covers advertising, returns and your time.
Should I divide by the item price or by the total including shipping? Pick one and stay consistent. We divide by the item price, which is the number you set in your listing. If you charge a lot for shipping, your margin on the total order will look a little lower.
Does "free shipping" lower my margin? Only if you do not raise the price to cover postage. The cost is the same either way. What changes is where the buyer sees it and, on most marketplaces, the fee is charged on the total in both cases.
Do I include my own labor in product cost? For handmade products, it is worth calculating twice: once with materials only, and once with an hourly rate for your time. If the second margin is close to zero, the price is too low.
How often should I recheck my margins? Whenever a marketplace changes its fees, postage rates change, or your supplier raises prices. Fees in this article were checked on 2026-10-14. Always confirm on the marketplace's official fee page.
Calculate your own margin
Enter your price, costs and VAT setting in our free Global Seller Profit Calculator. It shows your net profit, margin and break-even price, compares marketplaces side by side, and tells you the minimum price for your target margin. You can edit each marketplace's fee rate to match your country.
Related guides: eBay fees 2026 · Etsy fees 2026 · Amazon vs eBay vs Etsy: which leaves more profit?