Merchant Account Fees Calculator UK 2026 Quick Answer
Merchant account fees depend on more than your transaction rate.
Your real cost can include:
Card processing fees
Authorisation fees
Monthly charges
Terminal rental
PCI fees
Setup costs
Use our calculator to estimate your monthly cost + annual cost + effective processing rate + total contract cost.
You can also compare the result with a flat-rate card-payment provider.
Calculate Your Merchant Account Fees ↓
Compare Merchant Account Quotes
Free quotes • No obligation • Compare UK merchant-service providers
Merchant Account Fees Calculator
Merchant Account Fees Calculator UK
Estimate your monthly merchant account fees, card processing costs and potential savings compared with a flat-rate card reader.
Pricing type
Simple blended merchant rate Split by card type Use split pricing if you know your debit, credit and corporate card mix
Contract length
No contract / monthly 12 months 18 months 24 months 36 months Used to estimate total contract cost
Your estimated merchant account fees
Estimated monthly fees
£0.00
Estimated annual fees
£0.00
Total contract cost
£0.00
Effective processing rate
0.00%
Saving vs flat-rate provider
£0.00
Enter your figures to estimate your merchant account fees.
Recommendation will appear here.
This calculator is an estimate only. Actual merchant account fees vary by provider, sector, card mix, card type, transaction volume, average transaction value, chargeback risk, contract terms and pricing model.
Key Takeaways
Don't compare merchant accounts using the headline transaction percentage alone.
Fixed authorisation fees matter more when you process lots of small transactions.
Card type matters: debit, credit, commercial and international cards can attract different costs.
Terminal rental and monthly fees can outweigh a lower transaction rate for some businesses.
Higher card turnover can make small differences in processing rates increasingly valuable.
Flat-rate providers can be attractive for simplicity, but aren't automatically cheapest.
The figure we think matters most is your effective processing rate: total payment costs divided by card turnover.
How do we work?
Our comparisons are researched and reviewed by the Compare Your Business Costs editorial team using provider information, official UK guidance and business buying criteria. See how Compare Your Business Costs works .
Authored by: Ally Cox (Business Technology & B2B Services Specialist, 10+ Years’ Experience)
Last Updated: October 2026
Contents
What Merchant Account Fees Will You Pay? A merchant account quote can contain several different charges.
Transaction Fee Usually a percentage of each card payment - depending on the pricing model, different rates may apply to:
Debit cards
Credit cards
Commercial cards
International cards
American Express
Authorisation Fee A fixed charge can apply when transactions are authorised - a few pence may sound insignificant, but it matters when you process thousands of low-value transactions.
Terminal Rental Some providers rent card machines for a monthly fee.
Others sell hardware upfront or include it within a package.
Monthly & Minimum Charges Your agreement might include:
Account fees
Minimum monthly service charges
PCI-related fees
Gateway charges
Other Fees Also check:
Chargebacks
Refunds
Setup
Early termination
Online transactions
Phone payments
Our take
A quote advertising 0.8% processing isn't automatically cheaper than one advertising 1.2%.
The first could have authorisation fees + terminal rental + monthly charges while the second could bundle more into its headline rate.
That's why our calculator includes fixed costs as well as percentages.
Calculate Your Effective Processing Rate We think this is one of the most useful figures when comparing payment providers.
Effective processing rate = total payment costs ÷ card turnover × 100
For example -
Your business processes £10,000/month.
Your complete payment bill is: £140/month.
Your effective processing rate is: 1.4%.
This lets you compare differently structured quotes on a more consistent basis.
Why it matters
Provider A might quote 0.9% transaction fees.
Provider B might quote 1.1%.
But if Provider A adds significantly more fixed charges Provider B could still cost less overall.
Use the Merchant Account Calculator ↑
Merchant Account vs Flat-Rate Card Reader A traditional merchant-service package isn't automatically cheaper than a flat-rate provider.
Flat-rate pricing can be attractive because it is:
Simple
Predictable
Easy to understand
Often available without substantial fixed monthly costs
Current examples show how varied the market has become.
Square
Square currently charges 1.75%
for standard UK card-present transactions.
SumUp
SumUp currently offers 1.69% pay-as-you-go
or a lower 0.99% in-person domestic-card rate through Payments Plus, subject to its applicable terms.
Dojo
Dojo currently advertises 1.2% blended pricing for businesses below £100,000 annual card turnover.
Worldpay
Worldpay's current Simplicity tariff advertises 1.50% for Visa and Mastercard transactions alongside its terminal agreement.
Our take
This is why we wouldn't publish a rule saying "merchant accounts become cheaper at exactly £X turnover."
The break-even point changes according to the providers and plans you're comparing.
Use your actual turnover and transaction profile instead.
Why Transaction Size Matters Imagine two businesses each take:
£10,000/month by card.
Business A processes: 100 × £100 transactions.
Business B processes: 2,000 × £5 transactions.
Their turnover is identical.
But if a provider charges: 2p per authorisation
Business A incurs around: £2 in authorisation fees.
Business B incurs around £40.
That's why turnover alone isn't enough to compare merchant accounts.
Your transaction count matters too.
Merchant Account Providers to Compare Depending on your business, providers worth comparing can include:
Worldpay
Broad in-person, online, POS and international payment capabilities.
Dojo
Particularly relevant to businesses comparing modern terminals, EPOS integration and blended/custom pricing.
Takepayments
SME-focused provider offering personalised payment pricing.
Tyl by NatWest
Worth comparing for SMEs considering bank-linked merchant services.
Elavon
Established acquiring and payment provider serving businesses across multiple sectors.
Lloyds Merchant Services
Relevant to businesses comparing traditional acquiring and bank-linked payment services.
Our take
Don't choose a provider because it appears first on a "cheapest merchant account" list.
Give several providers the same payment data and compare what your business would actually pay.
Compare Merchant Account Quotes
How to Reduce Merchant Account Fees Start with your latest merchant statement.
Check:
Your effective processing rate
Debit-card rate
Credit-card rate
Commercial and international-card rates
Authorisation fees
Terminal rental
Monthly service charges
PCI fees
Other recurring charges
Then use those figures when requesting alternative quotes.
Our take
The best negotiating tool isn't "Can you give me a better rate?"
It's: "Here is exactly what we process and exactly what we're currently paying. What would the same transactions cost with you?"
That turns the conversation from headline pricin into real savings.
How to Compare Merchant Account Quotes Give each provider the same information:
Monthly card turnover
Annual card turnover
Number of transactions
Average transaction value
Debit/credit card mix
Commercial/international card mix
Number of terminals
Online payment requirements
Business sector
Then ask for estimated total annual cost.
Also check:
Contract length
Settlement time
Exit fees
Support
EPOS integration
Compare the whole package - not one percentage.
Compare Merchant Account Providers
Free quotes • No obligation • Compare costs based on your business
Our View: What Should You Pay? There isn't one merchant-account rate every UK business should aim for.
A business taking £2,000/month has different economics from one processing £100,000/month.
Likewise, a cafe taking hundreds of small contactless payments has a different payment profile from a B2B company processing a handful of large transactions.
So we wouldn't judge a quote from the percentage alone.
Calculate transaction fees + authorisation fees + monthly fees + terminal costs + other recurring charges.
Then divide the result by your card turnover.
That gives you an effective processing rate you can actually compare.
Our recommendation is simple:
1. Calculate what you're paying now. 2. Get several quotes using the same transaction data. 3. Compare total annual cost.
Compare Merchant Account Quotes
Free quotes • No obligation • See whether your business could pay less
Merchant Account Fees FAQs How do I calculate merchant account fees?
Multiply card turnover by the applicable transaction rate, then add fixed costs such as authorisation fees, account charges, terminal rental and other recurring fees. Our calculator does this for you.
What is an effective processing rate?
Your effective processing rate is your total payment cost divided by your card turnover. We think it is one of the most useful figures for comparing differently structured quotes.
Is a merchant account cheaper than Square or SumUp?
It can be, but not automatically. Square and SumUp use relatively simple pricing, while merchant-service quotes can combine lower percentage rates with fixed charges. Compare total annual cost.
Does higher card turnover mean lower fees?
Higher turnover can improve your negotiating position and some providers offer custom pricing to larger merchants. Your actual rate will also depend on factors such as card mix, sector and transaction profile.
Why do small transactions affect merchant fees?
Fixed per-transaction or authorisation charges make up a larger proportion of the cost when average transaction values are low.
Can I negotiate merchant account fees?
Potentially. Established businesses with meaningful card turnover should compare competing quotes and use their existing merchant statements when negotiating.
What fees should I check before signing?
Check transaction rates, authorisation charges, terminal rental, account fees, PCI charges, chargeback/refund fees, contract terms, settlement and early termination costs.
Should I choose the lowest transaction rate?
Not necessarily. A lower transaction percentage can be offset by higher fixed charges. Compare effective processing rate and total annual cost instead.
Compare Merchant Account Fees Know your numbers before you negotiate.
Calculate Your Merchant Account Costs
Then:
Compare Merchant Account Quotes
Free quotes • No obligation • Compare UK merchant-service providers
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Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
