Card processing fees explained: what UK businesses actually pay in 2026

What are the key takeaways?

• Every card payment you take is split three ways: interchange (to the card issuer), scheme fees (to Visa or Mastercard), and your acquirer's margin (to your payment provider).
• UK interchange is capped at 0.2% for consumer debit and 0.3% for consumer credit by retained EU regulation. Commercial and international cards are not capped.
• "Blended" pricing rolls all three layers into a single percentage, making it impossible to see where your money goes. Interchange-plus pricing separates them out.
• Free card machine offers often recover the hardware cost through higher transaction rates, longer lock-in periods, or both.
• An independent rate review typically saves a UK SME between 15% and 30% on annual processing costs [estimate]. We do these at Reeve Consult and charge nothing for the review itself.

What are card processing fees, and why does every UK business pay them?

Card processing fees are the charges deducted from every card payment your business takes. Every time a customer taps, dips, or enters their card details, a portion of that transaction goes to three separate parties before the remainder lands in your bank account. For most UK businesses, this deduction sits somewhere between 1% and 2.5% of each transaction value, depending on the provider, the card type, and the pricing model.

According to UK Finance's 2025 Payments Summary, debit cards accounted for 51% of all UK payments in 2024, with contactless transactions reaching 17.4 billion across the year (UK Finance, UK Payment Markets Summary 2025). Card payments are not optional for most businesses any more. They are the default way your customers expect to pay. Understanding where that processing fee goes is the first step to knowing whether you are paying a fair price.

We see this constantly at Reeve Consult [anecdote]. A restaurant owner signs up with a provider, takes the first rate they are offered, and never looks at the statement again. Three years later they are paying hundreds more per month than they need to. Not because anyone has cheated them, but because nobody explained what each line on the statement actually means.

This post does that. We walk through each component of a card processing fee, explain how UK regulation affects what you pay, compare the two main pricing models, cover the hidden costs that catch people out, and show you how to read your own merchant statement.

How is a card processing fee actually calculated?

The fee you pay on each card transaction is made up of three components stacked together: interchange, scheme fees, and your acquirer's margin. Think of it as three layers of cost, each going to a different organisation.

Interchange is the largest component. This is the fee paid to the bank that issued your customer's card. When a customer pays with their Barclays debit card, for example, Barclays receives the interchange fee. For UK consumer debit cards, this is capped at 0.2% of the transaction value. For UK consumer credit cards, the cap is 0.3%. These caps were introduced by the EU Interchange Fee Regulation (EU IFR 2015/751) and retained in UK law after Brexit.

Scheme fees go to Visa or Mastercard (or Amex, if you accept it). These cover the cost of running the card network itself. Scheme fees are much smaller than interchange, typically between 0.02% and 0.05% per transaction, though they vary by card programme and transaction type. Visa and Mastercard have both increased scheme fees multiple times since 2021, with the Payment Systems Regulator (PSR) publishing a market review in 2024 that found scheme fees rose by over 30% between 2017 and 2023 (PSR Market Review MR22/1.8, 2024).

Acquirer margin is the profit your payment provider takes. This is the part that varies most between providers and is the part you have the most ability to negotiate. The acquirer is the company that processes the transaction on your behalf. They connect you to the card networks, settle funds into your bank account, and handle chargebacks and compliance. Their margin sits on top of interchange and scheme fees.

When these three layers are added together, you get your total cost per transaction. On a standard UK consumer debit card payment, the floor is effectively 0.2% (interchange) plus scheme fees. Everything above that is acquirer margin and additional charges.

What is the difference between blended and interchange-plus pricing?

With blended pricing, your provider rolls interchange, scheme fees, and their own margin into a single percentage. You see one rate on your statement, say 1.6%, and that is all. With interchange-plus (sometimes called IC+ or cost-plus), the statement breaks out the actual interchange paid on each transaction, adds scheme fees separately, and then applies a fixed acquirer markup on top.

The practical difference is transparency.

Under a blended model, you cannot see what proportion of your fee goes to the card issuer and what proportion goes to your provider. If 80% of your transactions are on consumer debit cards at 0.2% interchange, and your blended rate is 1.6%, you may be paying a 1.4% acquirer margin without realising it. Under interchange-plus, you would see the 0.2% interchange, the scheme fee, and a separate markup of perhaps 0.3% to 0.5%. The difference is immediately visible.

According to the British Retail Consortium's 2024 Payments Survey, card acceptance costs for UK retailers rose to 1.1% of turnover in 2023, up from 0.94% in 2022 (BRC Payments Survey, December 2024). For many businesses, the rate they agreed to three years ago has been quietly overtaken by scheme fee increases that a blended model absorbs without any notification.

Blended pricing is not inherently unfair. For a very small business doing a few thousand pounds a month, the simplicity of a single rate can be easier to manage. But as turnover grows, the savings from interchange-plus become significant. If you process more than around 5,000 pounds a month in card transactions, it is worth understanding exactly what you are paying at each layer [opinion].

At Reeve Consult, when we do a rate comparison, the first thing we do is decompose the blended rate into its components. Only then can we see whether the acquirer margin is reasonable or inflated.

Are there fees beyond the transaction rate I should know about?

Yes, and these are where many businesses get caught out. The per-transaction percentage is the most visible cost, but your merchant agreement almost certainly includes several other charges that add up over a year.

Monthly service fees. Most providers charge a fixed monthly fee, typically between 5 and 25 pounds [estimate], for account maintenance. Some waive this if your monthly volume exceeds a threshold.

PCI DSS compliance fees. The Payment Card Industry Data Security Standard (PCI DSS) requires every business that accepts card payments to meet certain security requirements. Your provider charges an annual or monthly fee for managing your PCI compliance. This usually sits between 40 and 100 pounds per year [estimate]. If you fail to complete your annual PCI self-assessment questionnaire, many providers apply a non-compliance fee, often 30 to 50 pounds per month [estimate], on top.

Chargeback fees. When a customer disputes a transaction and the chargeback is upheld, you lose the transaction amount and pay a chargeback processing fee, typically 15 to 25 pounds per incident [estimate]. A pub running a busy Friday night tab system, or a salon taking deposits over the phone, is more exposed to chargebacks than you might expect.

Terminal rental or minimum contract charges. If your card machine is "free," it is worth reading the contract closely. UK Finance (formerly the UK Cards Association) has noted that terminal rental agreements frequently run for 18 to 48 months [estimate], with early termination fees that can exceed the value of the terminal itself. "Free" often means the cost has been bundled into a higher transaction rate or a longer lock-in.

Minimum monthly service charges. Some contracts include a minimum monthly processing charge. If your total fees in a given month fall below, say, 25 pounds, you pay the minimum regardless. This particularly affects seasonal businesses [anecdote]: a seaside café in Whitby doing 500 pounds of card turnover in January will still pay the minimum.

Settlement timing surcharges. Standard settlement is typically next business day. Some providers offer same-day or instant settlement for an additional fee, usually 0.25% to 0.5% on top of the standard rate [estimate].

The Federation of Small Businesses' 2024 Small Business Index found that 41% of small businesses cited operating costs as a primary concern (FSB Small Business Index Q4 2024). Card processing fees are one of those operating costs that most owners accept without interrogating. We would always encourage you to ask for a full fee schedule, in writing, before signing any agreement.

How much do UK businesses actually pay in card processing fees?

Most UK SMEs on blended pricing pay an effective rate (total fees divided by total card turnover) of between 1.2% and 2.0% [estimate]. Businesses on interchange-plus pricing with a competitive acquirer margin tend to land between 0.6% and 1.2%, because the transparency makes it harder for unnecessary cost to hide. The exact figure depends on your provider, your contract, your card mix, and your volume.

Card mix matters enormously. A restaurant in central London with a high proportion of international tourists paying with non-EEA credit cards will pay significantly more per transaction than a barber in Sheffield where 90% of payments are UK consumer debit cards. International card interchange is not capped by the EU IFR, and can run from 1.15% to 1.95% depending on the scheme and card programme, according to Visa's published interchange tables.

American Express sets its own merchant discount rate outside the interchange framework, typically 1.5% to 3.0% depending on your sector and volume [estimate]. Whether accepting Amex makes commercial sense depends on how many of your customers carry one and whether the additional revenue outweighs the higher cost per transaction.

Volume also affects your negotiating position. The PSR's 2024 report found that smaller merchants were disproportionately affected by scheme fee increases because they had less bargaining power and less visibility of the fee components. If you have not reviewed your rates in the last 18 months, there is a good chance you are paying more than you need to.

What does the UK interchange cap actually mean for my business?

The interchange cap sets maximum rates at 0.2% for consumer debit and 0.3% for consumer credit transactions. It was introduced via the EU Interchange Fee Regulation in 2015 and retained in UK law after Brexit. For a standard UK consumer card payment, the card-issuing bank cannot take more than these percentages as interchange. That protects you on the largest fee component for domestic consumer transactions, but there are important exceptions.

Commercial cards are not capped. If your customer pays with a corporate Visa or a business Mastercard, interchange can be significantly higher. For some commercial card programmes, interchange runs above 1.5%. A B2B business, or a restaurant that takes a lot of corporate entertainment bookings, may see a meaningful proportion of transactions falling outside the cap.

International cards are not capped. If the card was issued outside the UK, the domestic interchange cap does not apply. The PSR's 2024 market review highlighted that cross-border interchange rates had risen substantially since Brexit, as the UK was no longer bound by the EEA-wide cap on inter-regional interchange.

The cap applies to interchange only. It does not cap scheme fees or acquirer margins. So while interchange on a UK consumer debit card is locked at 0.2%, your total cost can still be 1.5% or more if the acquirer margin and scheme fees are high.

The PSR has actively investigated both scheme fees and interchange since 2022. Their final report (MR22/1.8) concluded that Visa and Mastercard had market power that allowed them to increase scheme fees without effective competitive constraint. Understanding your card mix, knowing what proportion of your transactions fall outside the cap, and reading your statement carefully are all essential.

How do I read my merchant statement properly?

Your monthly merchant statement is the document that shows every fee you have been charged. Most business owners glance at the total, wince, and file it [anecdote]. Here is what to look for.

Transaction summary. This section shows total card turnover for the month, broken down by card type (Visa debit, Visa credit, Mastercard debit, Mastercard credit, Amex, and possibly others). This tells you your card mix, which directly affects your effective rate.

Processing fees. Under a blended model, you will see a single percentage applied to each card type. Under interchange-plus, you will see interchange listed separately, scheme fees, and the acquirer markup. Compare these to your contract terms. Providers do adjust rates, and they are required to notify you, but that notification is often buried in an email you did not read.

Monthly and annual charges. PCI DSS fees, service charges, terminal rental, minimum monthly charges. These sit in a separate section. Add them up and divide by your total card turnover to calculate your "all-in" effective rate. This single number is the most useful comparison metric.

Chargebacks and adjustments. Any disputed transactions, refund processing fees, or adjustments will appear here.

The number that matters most: your effective rate. Take your total fees for the month (every charge, not just transaction fees), divide by your total card turnover, and multiply by 100. If the answer is above 2.0%, you are almost certainly paying too much for a standard UK business [opinion]. If it is above 1.5% and most of your customers are paying with UK debit cards, something warrants a closer look. We have a worked example in our resources section that walks through an anonymised statement line by line.

What do "free" card machines really cost over two years?

Every "free card machine" offer recovers the hardware cost somewhere. The three most common recovery mechanisms are higher transaction rates, longer lock-in periods, and bundled extras. Understanding which one applies to your offer is the difference between a good deal and an expensive one.

Higher transaction rates. The headline rate is elevated to recover the hardware subsidy. If a machine costs the provider 200 pounds and you process 10,000 pounds a month, an extra 0.1% on your rate covers the machine cost within 20 months [estimate]. On a 48-month contract, they recover it twice over.

Longer minimum contract terms. Free terminal offers almost always come with longer lock-in periods. A 12-month rolling contract becomes a 36 or 48-month commitment. Early termination fees can run from 100 to 500 pounds depending on the remaining term [estimate]. The UK's Competition and Markets Authority (CMA) raised concerns about long minimum terms in payment terminal contracts, noting they reduce merchants' ability to switch providers (CMA, Retail Banking Market Investigation, 2016).

Bundled extras you did not ask for. Some agreements bundle in premium features, software subscriptions, or insurance at an additional monthly cost that is easy to overlook at signing.

To compare properly: multiply your expected monthly card turnover by the transaction rate, add all fixed monthly charges, multiply by the contract length in months, and compare that total to a provider that charges for the machine upfront but offers a lower transaction rate.

Can I negotiate my card processing fees?

Yes, and it is one of the most underused levers available to UK businesses. Interchange is fixed by regulation for consumer cards and scheme fees are set by Visa and Mastercard, so you cannot negotiate those. But the acquirer margin is entirely negotiable. Here is what gives you negotiating weight:

Volume. Higher monthly card turnover means more revenue for the provider per account. They have a financial incentive to keep you.

Tenure. If you have been with a provider for two or more years with a clean record, they would rather reduce your rate than lose you to a competitor.

Competitive quotes. Having a written quote from another provider is the single most effective negotiation tool. It shifts the conversation from "can you do better?" to "this is what I have been offered elsewhere."

Understanding your own numbers. If you can articulate your effective rate, your card mix, and the acquirer margin you are paying, you are immediately in a stronger position than most businesses that call up and say "my fees are too high" [opinion].

At Reeve Consult, this is core to what we do. We review your current arrangement, identify the margin your provider is taking, and either negotiate with your existing provider or compare against alternatives. The rate comparison is free, takes about 15 minutes, and gives you a clear picture of where you stand.

How do card fees differ by business type?

Your sector influences your effective rate more than most owners realise. The card mix, average transaction value, and chargeback risk profile all vary by industry, and each factor shifts what you actually pay per transaction.

Hospitality (restaurants, pubs, cafés). Average transaction values tend to be moderate (15 to 50 pounds). Card mix skews heavily toward UK consumer debit, which means interchange is capped and predictable. The risk factor is gratuities and chargebacks: if tips are added to the card transaction, they increase the processing fee proportionally.

Salons and barbers. Lower average transaction values (20 to 60 pounds) with a very high proportion of debit card payments. The main cost exposure is often fixed monthly charges rather than the transaction rate itself [opinion]. A solo barber paying 20 pounds a month in fixed fees on 2,000 pounds of card turnover is paying an effective 1% before a single transaction fee is applied.

Retail. Wide variation depending on product type. High-value retailers benefit from the percentage-based model because the absolute fee is proportional. Low-value, high-volume businesses (convenience stores, newsagents) are more affected by any per-transaction fixed component.

Professional services and B2B. Higher proportion of credit card and commercial card payments, which means interchange sits above the consumer cap. Effective rates tend to be higher unless the pricing model accounts for this card mix specifically.

According to UK Finance's 2025 Payments Summary, contactless payments reached 17.4 billion transactions in 2024. For sectors where average transactions sit below the 100 pound contactless limit, tap-to-pay has made card acceptance non-negotiable.

What should I look for when comparing card payment providers?

Look beyond the headline transaction rate. The contract length, settlement speed, terminal costs, PCI compliance handling, and support quality all affect the true cost and experience. Here is the full checklist.

Pricing model. Is it blended or interchange-plus? If blended, can they provide a breakdown of what is inside the blend?

Contract length and exit terms. What is the minimum term? What are the early termination fees? Is there a rolling contract option after the initial period?

Settlement speed. When does money reach your bank account? Next business day is standard. Same-day or instant settlement usually costs extra.

Terminal costs. Is the machine purchased, rented, or "free"? What happens to the machine at the end of the contract?

PCI compliance. Is the compliance fee inclusive? What is the non-compliance penalty? Do they help you complete your annual self-assessment?

Chargeback handling. What is the chargeback fee? Do they provide any dispute resolution support?

Reporting and statements. Can you access detailed transaction data online? Is the statement clear enough to calculate your effective rate?

Customer support. When a machine goes down on a Saturday evening in a packed restaurant, how quickly can you get help? This is worth more than a 0.1% rate difference.

We would always encourage you to get at least two quotes, in writing, before committing. If your current provider will not give you a written breakdown of your rates and fees, that itself tells you something.

What else do UK business owners ask about card processing fees?

The questions below come up in almost every rate review we do at Reeve Consult. They cover card type acceptance, PCI compliance, surcharging rules, and review frequency. If your question is not here, get in touch and we will answer it directly.

Do I have to accept credit cards, or can I only take debit?

You can choose which card types to accept. However, most card machine contracts cover all Visa and Mastercard products. Declining credit cards at the point of sale is operationally complicated with most modern terminals. If credit card fees are a concern, the more practical approach is to negotiate a rate that accounts for your actual credit-to-debit ratio rather than trying to refuse credit cards entirely.

What is PCI DSS and do I need to worry about it?

PCI DSS is the Payment Card Industry Data Security Standard, a set of security requirements for every business that accepts card payments. Most of the technical compliance is handled by your provider's equipment. Your responsibility is to complete an annual self-assessment questionnaire. The consequence of ignoring it is a monthly non-compliance fee, and in a worst case, liability if card data is compromised. It takes about 20 minutes once a year. Do not ignore it.

Can I pass card processing fees on to my customers?

Since January 2018, UK law (the Payment Services Regulations 2017, implementing PSD2) has banned surcharging on consumer debit and credit card payments. You cannot add a surcharge for customers using Visa or Mastercard cards issued in the UK or EEA. Commercial card surcharges are possible in limited circumstances, but the FCA has enforced against businesses that apply broad surcharges. The practical answer for most SMEs: absorb the cost and factor it into your pricing.

How often should I review my card processing fees?

At minimum, once a year. Scheme fees change, your card mix shifts as customer behaviour evolves, and your volume may have increased enough to justify a renegotiation. If you have not reviewed your rates in 18 months or more, a review is overdue. We offer a free rate comparison that takes about 15 minutes and gives you a clear before-and-after picture.

What is the single most important thing to do about your card processing fees?

Review them. The difference between a well-structured deal and an inattentive one can be thousands of pounds a year for a busy hospitality or retail business. That single step, actually reading your statement and understanding the three layers, puts you ahead of most UK business owners.

The fees themselves are not complicated: interchange (capped for consumer cards), scheme fees (set by Visa and Mastercard), and acquirer margin (negotiable). The complexity comes from how providers package them and what they do not show you.

At Reeve Consult, we sit on your side of the table. We are not a payment processor. We are an independent consultancy that helps UK businesses understand what they are paying and whether they can do better. The rate comparison is free, there is no obligation, and we explain what we find in plain English. or can walk you through your statement in 15 minutes.