Why Can Business and Overseas Cards Cost More to Accept?
Understand card categories, international pricing and the effect of your actual card mix when comparing merchant services quotes.
The short answer
Some tariffs charge different rates for consumer, commercial and overseas cards because underlying payment costs and provider pricing differ. Other tariffs include several categories in one price. Use your transaction reports to establish the categories you actually accept, then compare both offers against the same mix.
In this guide
What determines the card category?
The relevant classification comes from the card and payment data used by the provider, not simply what the customer buys. A personal card used for a business purchase is not automatically a commercial card. Paying in pounds also does not make an overseas-issued card a UK-issued card.
| Factor | What to confirm |
|---|---|
| Consumer or commercial | How the provider identifies the card product and prices it. |
| Domestic or overseas | Which issuing-country and merchant-location rules apply. |
| Debit, credit or other product | Whether separate rates or exclusions apply. |
| Payment channel | Whether in-person, online or manually entered payments use different prices. |
Why can the prices differ?
Adyen explains that underlying interchange and scheme charges can vary with card product, geography and transaction type. A provider may pass those components through separately or combine them in its own tariff. A percentage covering one group should not be applied to other groups without confirmation.
For example, SumUp Payments Plus distinguishes eligible domestic consumer cards from international, corporate and premium cards. This illustrates a pricing distinction, not a rule that every provider must charge those groups differently. Check the eligibility wording attached to the actual offer you receive.
Worked example: the same turnover, a different result
Two fictional tariffs. Quote A charges 0.9% on the assumed domestic consumer group and 2.5% on the other group. Quote B charges 1.2% across both groups. Assume £20,000 monthly sales and no other fees.
| Sales mix | Quote A | Quote B | Lower processing cost |
|---|---|---|---|
| 95% domestic; 5% other | £196 | £240 | A by £44 |
| 80% domestic; 20% other | £244 | £240 | B by £4 |
In the second row, Quote A is £16,000 × 0.9% + £4,000 × 2.5% = £244. Its cost rises by £48 when the other-card share changes from 5% to 20%, even though total sales stay the same. Fixed fees and event charges must still be added.
Build a usable card-mix report
- Use at least a representative month and include a different season if customer patterns change.
- Separate payment channels before breaking each into card groups.
- Use sales value for percentage charges and counts for fixed transaction charges.
- Ask for clarification where a statement groups commercial and overseas cards together.
- Keep forecasts distinct from actual past transactions.
A tourist business, online seller or business-to-business supplier may need different assumptions. Do not borrow another sector’s mix as if it were your own. If exact data is missing, show several plausible scenarios and label them as assumptions.
Use the mix in your savings calculation
In the comparison calculator, use the card-group entries for the sales and rates that differ. Make sure each payment belongs to one group within its channel and that the groups total the relevant turnover. Do not add overseas sales a second time after already including them in total sales.
Ask the supplier to confirm what happens if your mix changes. A quoted saving based on a favourable mix is not dependable unless it reflects the business you expect to run. For the wider pricing structure, see blended versus interchange++.
Common questions
Are business cards always more expensive for the merchant?
No. Some tariffs price multiple card groups together. The answer depends on the tariff and its exclusions, even where underlying costs differ.
Does charging in sterling avoid an international-card fee?
Not necessarily. Card origin and transaction currency are different inputs. Confirm how the provider defines international payments and any separate currency-conversion charges.
Put your own figures to work.
Use the free calculator to organise your costs and keep a report. If something is unclear, you can ask for a free initial review.
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Sources and how to use this guide
Primary references checked on 15 October 2026:
Worked examples are original fictional scenarios, not customer results, market averages or provider quotations. Unless stated otherwise, they use a consistent VAT basis and include only the costs listed. Provider prices, eligibility and terms can change. Check your written agreement before deciding.
Our guides explain costs and comparison methods. They do not rank the whole market or claim hands-on product testing. Source links are references, not a claim of partnership. Read the calculation method and limitations, or about the service.