How Much Does a Card Machine Cost in the UK?

Ask what a card machine costs and you will be quoted a percentage. It will sound small. It will also be the least useful number in the conversation.

The reason is structural: a card payment agreement contains several independent charges, some fixed and some variable, and the advertised rate covers only one of them. Two providers quoting identical headline percentages can produce monthly bills that differ substantially. This article sets out every charge you are likely to meet, explains which ones matter most for which kinds of business, and gives you a method for comparing offers that survives contact with a sales call.

We deliberately avoid quoting specific rates. Pricing in this market is negotiated per business and moves with volume, card mix and risk, so any figure printed here would mislead more than it helped. What does not change is the structure, and that is what you can learn.

The charges, one at a time

Transaction fees

Charged on each sale, normally as a percentage. Sometimes expressed as a percentage plus a fixed amount per transaction.

The critical detail is that a single quoted percentage almost never applies to every card. Providers price by card type, and the categories behave very differently:

Those caps have applied to UK domestic consumer cards since 2015. They are the floor beneath part of your fee, not the whole fee: your provider's margin and scheme fees sit on top.

If your customers are mostly consumers paying with UK debit cards, a blended headline rate may be broadly representative. If you invoice other businesses, or serve tourists, a meaningful share of your transactions may fall outside the capped categories and be charged at a higher rate you were never quoted.

Authorisation fees

A small fixed charge each time the terminal requests approval, typically a few pence, applied regardless of sale value.

This is the charge most often overlooked and the one that punishes low-value sales hardest. Consider two businesses with identical monthly card turnover:

• A furniture shop taking 40 sales averaging 250 pounds
• A cafe taking 2,000 sales averaging 5 pounds

Both process the same total. The cafe generates fifty times as many authorisations. At the same per-authorisation fee, the cafe pays fifty times as much in that line. A percentage-only comparison hides this completely.

Terminal costs: rent or buy

Most UK businesses rent, on a separate agreement from card processing, with its own term and its own renewal date.

Renting spreads the cost and usually includes replacement if the device fails. Buying outright removes the recurring charge but leaves you owning hardware that must eventually be replaced, and some processing agreements are priced less keenly if you supply your own device.

The question worth asking is not which is cheaper this month but what the rental totals over the full term, and what happens at the end of it. Rentals that roll on automatically after the initial term are a well-known source of businesses paying for terminals they no longer want.

Minimum monthly service charge

A floor. If your processing fees for the month fall below an agreed figure, you pay the difference.

For a business with steady year-round trade this may never bite. For a seasonal business it can be expensive in the quiet months, and it is precisely the businesses with uneven trade who tend not to ask about it. A beach cafe, a wedding venue or a garden centre should treat this clause as a priority question.

PCI compliance charges

A monthly administrative fee relating to card data security standards. Many providers also apply a higher non-compliance charge if the annual self-assessment has not been completed.

The current standard is PCI DSS v4.0.1, mandatory since 1 April 2025. For a business taking payments through a physical terminal, compliance usually means completing a Self-Assessment Questionnaire annually through the acquirer. Businesses frequently pay the penalty rate for years simply because nobody told them a form existed.

Everything else

Depending on the provider you may also see:

• Statement or account fees
• Gateway fees, if you take payments online as well
• Settlement fees, or charges for faster settlement
• Chargeback handling fees when a customer disputes a payment
• Early termination charges

What actually drives your bill

Three characteristics of your business matter more than the rate you negotiate.

1. Average transaction value. Low values make fixed per-transaction charges dominant. High values make the percentage dominant.
2. Card mix. Consumer debit is the cheapest to accept. A business-to-business customer base shifts you toward uncapped commercial rates.
3. Volume consistency. Steady turnover makes minimum monthly charges irrelevant. Seasonal turnover makes them a real cost.

A method for comparing two providers

Do not compare rates. Compare a modelled month.

1. Take a recent representative month of card turnover and the number of transactions
2. Split the turnover by card type as far as your statement allows
3. Apply each provider's rate to each category
4. Add the authorisation fee multiplied by your transaction count
5. Add every fixed monthly charge: rental, minimum, PCI, statement, gateway
6. Check whether the minimum monthly charge exceeds your calculated total; if so, use the minimum
7. Repeat for your quietest month of the year

Step seven is the one people skip, and it is where seasonal businesses discover the true cost.

Our card fee calculator will do the annual arithmetic on your current rate if you would rather not do it on paper.

Questions that get useful answers

Ask for pricing in writing, broken down by card type, with every recurring charge listed. A clear answer is itself informative.

• What is the rate for UK consumer debit, consumer credit, commercial, and non-UK cards?
• What is the authorisation fee per transaction?
• Is there a minimum monthly service charge, and what is it?
• What is the terminal rental, over what term, and what happens at the end?
• Is the rental a separate agreement from processing?
• What are the PCI charges, compliant and non-compliant?
• What notice period applies, and is there an early termination fee?
• Which of these charges are fixed for the term and which can change?

Key takeaways

• The advertised percentage is one of six or more charges
• UK consumer debit and credit interchange is capped; commercial and overseas cards are not
• Low average transaction values make per-authorisation fees the dominant cost
• Minimum monthly charges hurt seasonal businesses specifically
• Terminal rental usually sits on a separate contract with a separate end date
• Compare a modelled busy month and a modelled quiet month, not a rate

How Jos Finserv Can Help

Jos Finserv can help eligible UK businesses explore available card payment options and understand how the charges in an existing agreement compare with alternatives. We look at how a business trades, including transaction values, volumes, card mix and seasonality, rather than quoting a single rate.

Jos Finserv is a broker, not a payment provider. Availability, pricing and terms are set by providers and depend on the individual business.

Looking for a card payment solution for your business?
Discuss your requirements with the Jos Finserv team or read our guide to choosing the right machine for your trade.

Important: Card processing pricing is subject to provider eligibility and underwriting. Rates, fees, contract terms and settlement times vary between providers and according to how a business trades. Figures and structures described here are explanatory and are not quotes. No saving is guaranteed. Businesses should compare the complete cost of an agreement over its full term before deciding.