Card machine charges aren’t always as simple as the transaction rate advertised by a payment provider.
Your total cost can include transaction fees, terminal rental and other charges, depending on your provider, agreement, the cards your customers use and how your business takes payments.
That’s why the best way to understand your card payment costs isn’t to look at one percentage. It’s to work out the total cost of accepting card payments.
This guide explains the main card machine charges UK businesses may encounter, what affects them and how to calculate your effective payment-processing cost.
How Much Do Card Machines Charge Per Transaction?
There isn’t one transaction fee that applies to every UK business.
The amount you pay can depend on factors including:
- your payment provider and pricing model
- monthly card turnover
- average transaction value
- debit, credit and commercial card usage
- where cards were issued
- face-to-face versus online transactions
- additional services included in your agreement
This is why two businesses processing the same amount in card sales won’t necessarily pay the same amount.
It’s also why an advertised transaction rate doesn’t always tell you what accepting card payments will cost your business overall.
A better way to compare card payment costs
Instead of asking only:
“What’s the transaction rate?”
also ask:
“What will my total monthly cost be based on the way my business actually takes payments?”
That distinction matters.
A provider with a lower headline percentage isn’t necessarily cheaper once terminal charges and other applicable fees are taken into account.
How Can I Calculate What Card Payments Are Really Costing Me?
If you already accept cards, one useful starting point is to calculate your effective payment cost.
Use:
Total card payment costs ÷ total card turnover × 100 = effective cost percentage
For example, suppose you process £20,000 in card payments during a month and the total relevant costs associated with accepting those payments are £300.
The calculation would be:
£300 ÷ £20,000 × 100 = 1.5%
This doesn’t mean your contracted transaction rate is 1.5%.
It means that, based on the costs included in your calculation, card acceptance cost the equivalent of 1.5% of your card turnover for that period.
What should you include in the calculation?
Look beyond the transaction fees shown on your statement.
Depending on your agreement, relevant costs could include:
- transaction or merchant service charges
- terminal rental
- authorisation charges
- minimum monthly charges
- gateway charges
- PCI-related charges
- account or service fees
- other applicable payment-processing charges
Not every provider uses all of these charges, and different pricing models bundle costs differently.
The purpose of the calculation is therefore not to compare one advertised percentage with another. It is to get a clearer picture of what your complete payment setup is costing.
What Makes Up a Card Transaction Fee?
Several parties and systems can be involved when a customer pays by card.
The amount charged to the merchant may incorporate different underlying elements, including:
Interchange fees
Interchange is one component of the cost associated with processing a card transaction.
For many UK consumer card transactions, interchange fees are subject to regulatory rules and caps. However, the treatment of a transaction can differ depending on factors such as the card and where it was issued.
Most importantly, interchange isn’t the same thing as the total transaction rate charged to your business.
If your payment provider charges your business a particular percentage, you shouldn’t assume that percentage represents interchange alone.
Card scheme fees
Card schemes facilitate the networks through which card transactions operate.
Scheme-related costs form another part of the overall economics behind processing card payments.
Provider or acquiring costs
Your provider or acquiring arrangement will also affect what your business ultimately pays.
Exactly how these different elements appear on your statement depends on the pricing model and provider.
Some businesses see a relatively simple rate, while others have a more detailed breakdown.
What Is the Difference Between Blended Pricing and Interchange++?
This is worth understanding when comparing payment quotes because two providers can present their prices very differently.
Blended pricing
With blended pricing, multiple elements of the processing cost are generally combined into a simpler rate or set of rates.
The advantage can be simplicity: it may be easier to understand what you’ll pay for a transaction.
The disadvantage is that you may have less visibility over the individual components making up that price.
Interchange++ pricing
Interchange++ separates underlying interchange and scheme-related costs from the provider’s acquiring margin or fee.
That can provide greater transparency, although statements and quotes may initially appear more complicated.
Neither pricing structure should automatically be assumed to be cheaper.
The more useful comparison is what each arrangement is likely to cost your business, based on your turnover, transaction values and card mix.
Do You Have to Pay Monthly for a Card Machine?
It depends on the provider and payment setup.
Traditional countertop, portable and mobile card terminals are often supplied under an agreement that includes a recurring terminal or service charge.
Other providers may use a different model, such as selling hardware upfront.
This means there are two separate questions to ask when comparing card machines:
What does the hardware cost?
and
What will it cost me to process payments through it?
A low transaction rate accompanied by higher fixed costs may work well for one business and poorly for another.
Your transaction volume matters.
What Other Card Machine Charges Should I Look For?
One of the most useful things you can do before agreeing to a card payment contract is ask for a complete breakdown of potential charges.
Depending on the provider and agreement, these may include:
| Potential cost | What to check |
| Transaction charges | How different cards and transactions are priced |
| Terminal costs | Rental, purchase or service costs |
| Authorisation charges | Whether there is a separate per-transaction charge |
| Minimum monthly charges | Whether a minimum applies regardless of turnover |
| PCI-related charges | What the charge covers and when it applies |
| Gateway charges | Relevant if you’re also accepting payments online |
| Chargeback-related fees | What happens when a payment is disputed |
| Setup/account fees | Any initial or ongoing account costs |
| Contract exit costs | Notice periods and early termination conditions |
Not every provider charges every fee in this table.
The point is to find out what applies before comparing the total cost of competing offers.
Do Debit and Credit Cards Cost the Same to Process?
Not always.
The cost associated with processing a card transaction can depend on the type of card being used and the commercial arrangement you have with your payment provider.
Your customers might pay using:
- consumer debit cards
- consumer credit cards
- business or commercial cards
- cards issued outside the UK
- digital wallets linked to an underlying card
The mix of cards your customers use can therefore influence your overall processing costs.
This is sometimes referred to as your card mix.
For a meaningful quote, a payment provider should ideally understand how your customers actually pay rather than base everything on one hypothetical transaction.
Do Business and Commercial Cards Cost More?
Commercial and corporate cards shouldn’t automatically be treated as if they were identical to standard UK consumer cards.
This can be particularly relevant to businesses that sell primarily to other businesses.
If a meaningful proportion of your turnover comes from corporate or commercial cards, ask prospective payment providers specifically how those transactions are priced.
Otherwise, an attractive headline rate based on standard consumer cards may not accurately represent the transactions your business receives.
Do International Cards Cost More?
They can.
The cost structure for a card issued outside the UK can differ from the cost associated with a domestic consumer card.
This can be particularly relevant if you operate in tourism, hospitality, travel, ecommerce or another sector with a significant number of international customers.
Rather than assuming international cards are covered by the headline price you’ve been quoted, ask your provider how they are treated under the proposed agreement.
Are Contactless Card Payments More Expensive?
The fact that a customer taps their card rather than inserts it isn’t, by itself, the best way to understand the cost of the transaction.
The underlying card and your provider’s pricing arrangement are more important considerations.
The same principle applies when customers use supported digital wallets on their phone or watch. The wallet is how the customer initiates the payment, but there is still an underlying payment method involved.
If you want to know exactly how these transactions are charged, check the pricing terms of your particular provider rather than assuming every payment method carries the same cost.
Are Online Card Payment Fees Different?
They can be.
Online payments are generally card-not-present transactions, while payments made through a physical terminal are usually face-to-face transactions.
An ecommerce payment setup may also involve technology and services that aren’t required for a standalone physical card terminal, such as a payment gateway.
If you accept payments both online and face-to-face, don’t assume the costs are identical.
Review each channel separately and then calculate the combined cost of your complete payment setup.
Related guide: [Payment Gateway Solutions for Ecommerce Businesses]
Why Do Card Machine Rates Vary Between Businesses?
A card payment quote should reflect how a business actually trades.
Consider two businesses.
Business A processes £5,000 per month through one terminal with a relatively low average transaction value.
Business B processes £100,000 per month across several locations and has a different customer card mix.
Even though both accept card payments, their requirements are very different.
Factors that can influence the commercial arrangement offered include:
- monthly card turnover
- number of transactions
- average transaction value
- card mix
- payment channels
- number and type of terminals
- wider payment requirements
That’s why asking another business what percentage it pays doesn’t necessarily tell you what your business should expect to pay.
A useful comparison needs to be based on your own transaction profile.
How Do I Read My Merchant Statement?
Merchant statements can look complicated, particularly when costs are split across different categories.
Rather than concentrating on one line, start with the overall picture.
1. Find your total card turnover
Establish how much you processed during the period.
2. Identify transaction-related charges
Look at the fees associated with the card transactions processed.
3. Find fixed costs
Check for terminal, account, service or other recurring charges.
4. Identify additional charges
Look for charges that sit outside the headline transaction rate and establish what they relate to.
5. Calculate your effective cost
Compare the total relevant costs with your card turnover using the calculation shown earlier.
6. Check your contract
Your statement tells you what you’ve been charged. Your contract should help explain why.
Look at your agreed rates, contract term, notice period and any other applicable commitments.
Digi Checkout expert note:
[This would be an excellent place to add genuine first-hand insight from the Digi Checkout team: for example, the three charges merchants most commonly overlook when asking Digi Checkout to review their statements. This should only be added using genuine company experience.]
Am I Paying Too Much for Card Payments?
A high or low transaction percentage on its own isn’t enough to answer this.
You need to consider your total costs alongside the service you’re receiving.
Ask:
- What is my effective overall cost?
- Have my transaction volumes changed since I signed the agreement?
- What cards do my customers typically use?
- Am I paying for services I no longer need?
- Does my existing setup support the way I now take payments?
- How long is left on my contract?
- What level of customer support am I receiving?
- How quickly are payments settled?
- Would another pricing structure suit my transaction profile better?
The aim isn’t simply to find the smallest percentage printed on a quote.
It’s to establish whether the overall payment arrangement offers appropriate value for your business.
Should I Choose the Cheapest Card Machine Provider?
Price matters, but it shouldn’t be considered in isolation.
Card payments may be a critical part of your day-to-day operation. A small saving can become far less attractive if the service doesn’t meet your operational needs.
Alongside cost, consider:
- contract length and flexibility
- terminal reliability
- customer support
- settlement arrangements
- reporting and transaction management
- integrations
- online payment requirements
- additional fees
- ability to add terminals or locations as you grow
The cheapest-looking quote and the best-value solution aren’t necessarily the same thing.
How Often Should I Review My Card Payment Costs?
There isn’t a universal timetable, but reviewing your payment setup makes sense when the way your business trades has materially changed.
For example, you may now:
- process significantly more card turnover
- have a different average transaction value
- operate additional locations
- need more terminals
- accept more international or commercial cards
- take payments online as well as face-to-face
- need payment links or other remote-payment options
Your original agreement may still suit you perfectly.
The purpose of a review is to establish whether that remains the case rather than assuming that changing provider will automatically save money.
Is It Worth Changing Card Payment Providers?
Sometimes. But changing for the sake of a lower advertised rate can be a mistake.
Compare your existing arrangement with any proposed alternative on a like-for-like basis.
Check:
Current total costs versus proposed total costs
Don’t compare your current all-in bill with only a competitor’s headline transaction rate.
Also consider:
Contract commitments
Check notice periods and any applicable early termination conditions.
Hardware
Find out what happens to your existing terminals and whether new equipment is required.
Payment channels
If you accept online, over the phone or through payment links as well as through terminals, make sure the alternative supports the complete business.
Support and reliability
Consider what happens when you actually need assistance.
A payment arrangement isn’t good value merely because one percentage is lower.
Questions to Ask Before Accepting a Card Machine Quote
Before signing an agreement, ask the provider:
- What will my estimated total monthly cost be based on my current card turnover?
- How are consumer debit and credit cards charged?
- How are commercial cards charged?
- How are international cards charged?
- Are there separate authorisation or transaction charges?
- What will I pay for the terminal?
- Are there minimum monthly or service charges?
- Are there PCI-related charges?
- What is the contract length and notice period?
- Are there early termination charges?
- How quickly will funds normally be settled?
- What customer support is available?
- What happens if I need another terminal or open another location?
- Can the same provider support my online payment requirements if needed?
A provider should be able to explain its pricing clearly enough for you to understand what you’re agreeing to.
Frequently Asked Questions
How much does a card machine cost per month?
There isn’t one standard monthly cost. Depending on the provider and payment model, you may pay for terminal rental or purchase hardware upfront, alongside transaction and other applicable service charges.
The useful figure to compare is the complete cost based on your expected card turnover and usage.
What percentage do card machines take?
There isn’t one percentage that applies to every card machine or UK business. Charges can depend on the provider, pricing structure, transaction profile, card type and other factors.
Ask for a quote based on your actual business rather than relying solely on an advertised headline rate.
Are debit card payments cheaper than credit cards?
They may be priced differently depending on your payment provider and agreement. Check the rates applicable to the types of cards your customers actually use.
Does contactless cost more?
A contactless tap alone doesn’t tell you what the transaction will cost. The underlying card and your provider’s pricing arrangement are more relevant.
Are there hidden card machine fees?
Rather than assuming charges are hidden, ask for a complete breakdown of all potential fees before signing an agreement. These could include transaction, terminal, authorisation, account, PCI-related or other charges depending on the provider and service.
Can I negotiate card processing fees?
Commercial arrangements can vary between businesses and providers. Your turnover, transaction profile and payment requirements may be relevant when obtaining a quote or reviewing an existing arrangement.
Understand What Your Business Is Really Paying
So, how much do card machines charge?
There isn’t one meaningful number that applies to every UK business.
Your actual cost depends on how you take payments, the cards your customers use, your transaction profile, your payment provider and the pricing structure you’ve agreed to.
That’s why the best place to start isn’t the headline transaction percentage.
Work out your complete cost. Understand what you’re paying for. Then compare alternatives on the same basis.
Want Digi Checkout to Review Your Current Payment Setup?
If your merchant statement leaves you wondering what you’re actually paying for, Digi Checkout can help you review your current card payment setup.
We’ll look at how your business takes payments and discuss the charges and payment requirements relevant to your business, so you can better understand the options available.
A review doesn’t automatically mean you need to change provider. Your current arrangement may already suit your business.
The aim is to give you a clearer understanding of your payment setup so you can make an informed decision.Speak to Digi Checkout about reviewing your business payment setup.
