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Use your real bill
Include fixed charges so the rate reflects what left your account.
Independent UK calculator
Card Fee Check turns a merchant bill, a card-machine quote, or one payment into a clear answer in pounds and pence.
No card details · No provider recommendation · Calculated in your browser

Start with the figures you have
Choose the mode that matches your paperwork. These are estimates, but they include the fixed costs that headline rates leave out.
Quick effective rate
Enter one period's card turnover and all the fees paid for that same period.
Work backwards from your bill
Known fixed charges are a subset of the bill, so do not add them twice.
Detailed merchant fee estimate
Enter the card mix by value of sales. Put all monthly fixed charges into the relevant boxes. Leave unused fees at zero.
Compare another provider
Use identical turnover, card mix and transaction count for both providers.
How the figures work
Effective overall rate = all fees ÷ card turnover × 100. This includes fixed charges. In advanced mode, each card category's fee is its share of turnover multiplied by its rate; transaction charges and monthly fees are then added. The alternative uses the same turnover and transaction count.
These are estimates, not a quote. Card type by sales value may differ from card type by transaction count. Refunds, chargebacks, international cards, minimum charges, tiered pricing, interchange-plus structures, VAT treatment and billing dates can change an actual statement. Check your contract and statement before switching.
Why it helps
Built for owners who want enough detail to make a decision, without becoming payments specialists.
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Include fixed charges so the rate reflects what left your account.
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Turn percentages into a monthly and annual cost you can compare.
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No recommendation, referral pressure, or statement upload.
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Your figures are calculated on this device in your browser.
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