The platform fee is Fontdue’s share of each sale: 5% of the order, collected on the Stripe charge as an application fee and capped at $10,000 per calendar year. The rest of the payment lands in your Stripe balance, and once a year’s fees reach the cap, the rest of that year’s sales carry no fee at all.
What the 5% applies to
The fee is calculated on the discounted subtotal: the line items, including any order-variable multipliers, with a coupon discount already subtracted. Tax isn’t part of the base, so the fee doesn’t grow when tax is added at checkout, and a coupon shrinks it proportionally.11Foundries with a New York billing address pay sales tax on the fee itself. The cap applies to the fee before that tax. Stripe’s own processing fees are separate, and deducted by Stripe.
A $200 license with a 10% coupon has a discounted subtotal of $180, so the fee is $9 – whatever tax the buyer pays on top.
The yearly cap
The cap is $10,000 USD per calendar year, counted from 1 January to 31 December (UTC). A store in another currency has a cap of its own, worked out the same way each January:
the previous year’s average exchange rate from US dollars, times 10,000, rounded up to the nearest 100
The exchange rates are the European Central Bank’s daily reference rates, averaged over the days the ECB publishes them. Rounding up means a cap is never below its $10,000 equivalent, and never more than 100 units above it. Each year’s figures are set on 1 January from the year just ended, and don’t change after that. For 2026, the average 2025 rate was 0.8867 euros to the dollar, so the euro cap is 8,867 rounded up: €8,900.
| Currency | 2026 |
|---|---|
| USD | 10,000 |
| AUD | 15,600 |
| BRL | 55,900 |
| CAD | 14,000 |
| CHF | 8,400 |
| DKK | 66,200 |
| EUR | 8.900 |
| GBP | 7,600 |
| HKD | 78,000 |
| INR | 871,700 |
| JPY | 1,496,600 |
| NOK | 103,900 |
| NZD | 17,200 |
| SEK | 98,200 |
| SGD | 13,100 |
The cap counts in the currency of the sale – your store currency – rather than the currency your Stripe account pays out in.22Stripe converts the fee to your settlement currency at its own rate, which is why the Sales fees invoices are grouped by settlement currency. Fees are not returned when you refund a sale, so a refunded order still counts towards the year.
Reaching the cap
Each sale’s fee is limited to what is left of the year. A store in pounds has a £7,600 cap for 2026. After £7,448 of fees, £152 is left, so the next sale – a £4,000 order that would ordinarily carry a £200 fee – is charged £152. The cap is reached, and every later order that year carries no fee. On 1 January the count starts again.
Changing store currency mid-year
Every sale’s fee counts as a share of the cap in its own currency, and the shares add up. A store that switches from euros to dollars on 1 July after €4,450 of fees – half of the €8,900 cap – has half its year left: $5,000 of the $10,000 cap. Fees on dollar sales continue until they reach $5,000, then stop. Nothing about the switch itself is recorded; the sum is worked out from the orders and their currencies.
Where to see it
Reports → Sales fees shows the year’s fees against the cap, in your store currency, above the monthly fee invoices.