Best Merchant Service Providers UK 2026: Top Options Compared

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A merchant service provider gives your business the ability to accept card payments. For most small businesses, the question is not which acquiring bank to use — it is which all-in-one payment service provider offers the right combination of rate, hardware, and software for your volume and business type.

Best merchant service providers compared

Fees and terms verified against provider websites, May 2026. Quote-based rates require direct enquiry.

Best merchant service provider picks by business type

Best for small businesses: Square

Square’s 1.75% flat rate, £19 reader, and free POS app make it the most complete no-contract merchant service for businesses below £4,000/month in card volume. The hospitality POS features (table management, modifiers, split bills) are free. No underwriting, no account manager required, no monthly fee.

Best for high volume: Tide Card Reader

Tide’s Sell In-Person plan at 0.79% + 3p is the lowest published in-person rate in the UK without a custom contract. At £5,000/month in card sales, total cost is £52.50 including the £12.99 plan fee — vs £87.50 with Square at 1.75% PAYG. The break-even against PAYG is around £1,850/month.

Cheapest hardware entry point: SumUp Air

SumUp Air at £14.99 is the cheapest mainstream card reader in the UK. The 1.69% PAYG rate is lower than Square’s 1.75%. The Payments Plus plan at £19/month drops the rate to 0.99% — break-even at £2,714/month. For a business that wants to start as cheaply as possible, SumUp is the answer.

Best merchant service provider profiles

Top Pick

Square Reader

The right reader for any business that cannot honestly forecast its card volume a year out.

Get Square Reader →

Overview Card details Eligibility Pros & Cons Key Features

Best for: Small businesses wanting a free POS app and no monthly fees

Watch out: 1.75% flat becomes expensive above ~£6,000/month — no volume discount exists

Not ideal if: High-volume sellers who would benefit from Dojo or other negotiated per-transaction rates

Transaction fee1.75% flat (all cards incl. Amex)

Monthly feeNone

Hardware cost£19 +VAT

SettlementNext working day (1–2 days standard)

ContractNo lock-in

Amex acceptedYes — same 1.75% rate

Eligibility: {‘location’: ‘UK only’, ‘minimum_age’: 18, ‘entity_types’: ‘Sole traders, partnerships, limited companies’, ‘prohibited’: ‘Firearms, illegal activities — see Square Acceptable Use Policy’, ‘volume_pricing’: ‘Custom rates available for businesses processing over £200,000 annually’}

Not ideal if: High-volume sellers who would benefit from Dojo or other negotiated per-transaction rates

Watch out: 1.75% flat becomes expensive above ~£6,000/month — no volume discount exists

No monthly fee and no contract — zero downside risk while testing card acceptance

Free POS app usable from day one — most owners taking payments within an hour

Amex accepted at the same 1.75% rate — no surcharge or separate policy needed

Software ecosystem (online store, invoices, appointments) on the same account, no extra fees

1.75% flat becomes expensive above roughly £6,000/month in card takings

Settlement is 1–2 working days unless you pay extra for instant transfer

Bluetooth-to-phone means a flat battery or dropped app stops checkout

Square POS free plan — inventory, CRM, analytics and team management included from day one

Offline mode: accepts payments for up to 24 hours without internet

Hardware range from £19 Reader to £699 Register — scalable as the business grows

Payment links, invoices and online store included — all feed into the same Square account

Low-fee option

Tide Card Reader

The cheapest per-transaction reader if you can live without Amex and are happy to bank with Tide.

Get Tide Card Reader →

Overview Card details Eligibility Pros & Cons Key Features

Best for: Tide business account holders taking regular in-person payments — plan rate (0.79% + 3p) makes sense above roughly 80–100 transactions/month at average ticket sizes

Watch out: No Amex acceptance and 3-day standard settlement are hard stops for many businesses

Not ideal if: Businesses whose customers regularly pay by Amex, or any business not banking with Tide

Transaction fee1.39% + 5p PAYG / 0.79% + 3p on Sell In-Person plan

Monthly fee£0 PAYG or £12.99 +VAT/month (plan, rising to £17.99 from Apr 2026)

Hardware cost£59–£99 +VAT (Reader); £99–£119 +VAT (Plus)

Settlement3 working days standard (£2.99+VAT/month for next-day)

ContractTide business account required

Amex acceptedNo

Not ideal if: Businesses whose customers regularly pay by Amex, or any business not banking with Tide

Watch out: No Amex acceptance and 3-day standard settlement are hard stops for many businesses

Sell In-Person plan at 0.79% + 3p is the lowest rate in this guide above £2,000/month

Lifetime 4G SIM removes the phone-tether failure mode entirely

Settles directly into the Tide account — one balance, one reconciliation

£59 introductory hardware price undercuts most rental alternatives

No Amex acceptance — a hard stop for hospitality, salons, and premium retail

Requires a Tide business account — means a bank switch for most applicants

Standard settlement is three working days unless you pay for the next-day add-on

0.79% + 3p on the Sell In-Person plan — lowest per-transaction rate in this guide for mid-volume sellers

Lifetime 4G SIM built in — auto-switches from WiFi to mobile data without manual intervention

Settles directly to Tide business account — single balance, no transfer step

Two hardware models: Reader (4” display, email receipts) and Reader Plus (5.5”, paper receipts)

Best for Startups

SumUp Air

The right reader for a sole trader who wants the lowest-commitment start.

Get SumUp Air →

Overview Card details Eligibility Pros & Cons

Best for: Sole traders and startups wanting the lowest hardware entry cost

Watch out: Battery degrades in cold weather and Bluetooth fails if phone dies mid-shift

Not ideal if: Businesses expecting to scale past £5,000/month quickly — a plan switch will be needed

Transaction fee1.69% flat (0.99% on Payments Plus plan)

Monthly fee£0 or £19/month (Payments Plus)

Hardware cost£15 +VAT

SettlementNext day at 7am

ContractNo contract

Amex acceptedYes

Not ideal if: Businesses expecting to scale past £5,000/month quickly — a plan switch will be needed

Watch out: Battery degrades in cold weather and Bluetooth fails if phone dies mid-shift

£15 hardware price is the lowest entry point on the market

Next-day 7am settlement is faster than Square’s standard 1–2 working days

Payments Plus at 0.99% is a credible upgrade path above £4,000/month

Amex accepted at the flat rate — no separate premium-card policy needed

Hardware battery degrades in cold weather — unreliable on winter outdoor markets

Bluetooth-to-phone fails if the phone dies on a busy shift

Payments Plus break-even is £3,800/month — most small users should not subscribe

Best for Mobile

myPOS Go 2

The right choice for any mobile business where “no signal” means “no payment”.

Get myPOS Go 2 →

Overview Card details Eligibility Pros & Cons Key Features

Best for: Mobile and outdoor businesses needing a self-contained 4G reader with no monthly fees and instant access to funds via the myPOS account

Watch out: Funds land in myPOS e-money account first — separate transfer needed to reach a high-street bank

Not ideal if: Businesses already managing till, bookings and accounting from a phone or tablet

Transaction fee1.10% + £0.07 (consumer cards, up to £10k/month)

Monthly feeNone

Hardware cost£29 excl. VAT

SettlementInstant to myPOS e-money account

ContractPAYG — no long-term contract

Amex acceptedYes

Eligibility: UK businesses — confirm at mypos.com/en-gb

Not ideal if: Businesses already managing till, bookings and accounting from a phone or tablet

Watch out: Funds land in myPOS e-money account first — separate transfer needed to reach a high-street bank

Built-in 4G SIM means the reader works without a phone, without WiFi, without a tether

1.10% + 7p beats every flat-rate competitor on transactions above roughly £14

Instant (sub-3-second) settlement to the myPOS account

Physical keypad and screen more durable than phone-reliant alternatives

Funds sit in myPOS — a separate transfer is needed to reach a high-street bank account

Fixed 7p per-transaction fee makes small takings proportionally more expensive

POS app is functional but less developed than Square’s for food or hospitality

Built-in 4G SIM — fully independent reader, no phone or WiFi connection required

Instant settlement to myPOS e-money account — funds available in under 3 seconds

Free myPOS business Mastercard included with every device

Device range extends to Go Combo (with printer dock) and Ultra (Android touchscreen)

Bespoke pricing

Takepayments

Worth a call once you are doing enough volume to negotiate — not before.

Get a Takepayments quote →

Overview Card details Eligibility Pros & Cons Key Features

Best for: Established UK businesses wanting managed setup, UK-based 7-day support, and a single point of contact for card machines and online payments

Watch out: No published pricing — first quote is rarely the best; requires a sales call to compare

Not ideal if: Businesses doing under £4,000/month or wanting published pricing before a sales call

Transaction feeCustom — set by acquiring bank (quote required)

Monthly feeCustom — includes terminal rental (quote required)

Hardware cost£0 setup fee — rental model, monthly charge applies

SettlementNext working day

Contract12 months minimum, then rolling monthly

Amex acceptedYes

Not ideal if: Businesses doing under £4,000/month or wanting published pricing before a sales call

Watch out: No published pricing — first quote is rarely the best; requires a sales call to compare

UK-based support with assigned account management — useful when something actually breaks

Terminals include 4G as standard, not as an optional add-on

Rates are negotiable — favours higher-volume businesses willing to push back

12-month contract with no published pricing — cannot compare without a sales call

First quote is rarely the best quote — puts time cost on the buyer

No obvious edge for businesses doing under £4,000/month — likely more expensive than Square

Terminals include 4G as standard across all models — no add-on SIM cost

BeePaid app and pay-by-link for remote and mobile payment collection

Dedicated UK-based Welcome Team handles setup and onboarding

Rates are negotiable — higher-volume businesses can push back on the initial quote

Stripe Terminal

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Visit Stripe →

Overview Card details Eligibility Pros & Cons Key Features

Best for: Tech-forward businesses that already use Stripe online and want a unified payment stack

Transaction fee1.4% + 10p (EEA cards, in-person)

Monthly feeNone

Hardware costWisePad 3: £49 +VAT; S700/S710: £229 +VAT

Settlement3 business days standard (instant payout: 1%, min 40p)

ContractNo contract

Amex acceptedYes

Eligibility: UK businesses with a Stripe account. Standard eligibility applies; high-risk categories may be restricted.

1.4% + 10p for EEA card-present transactions — competitive without a monthly commitment

Unified dashboard: online and in-person payments in one place with consolidated reporting

Stripe Radar fraud detection included — no extra fee

No monthly fee and no contract — suits variable or seasonal transaction volumes

Tap to Pay on iPhone and Android eliminates the need for dedicated hardware

Custom Terminal integration requires SDK development — not a no-code out-of-box setup

2.9% + 10p for non-EEA cards — expensive for businesses with international customers

Standard settlement takes 3 business days; instant payout costs 1% (minimum 40p)

New accounts face a 7-day holding period before first payout

Account holds can freeze both online and in-person payment channels simultaneously

Unified in-person and online payment dashboard with consolidated reporting

Stripe Radar fraud detection included at no extra cost

Tap to Pay on iPhone and Android — no dedicated hardware needed

SDK integration (Android, iOS, JS, React Native) for custom POS builds

High-volume option

Worldpay

Sensible once you have serious volume and a fixed site; overkill for anything smaller.

Visit Worldpay →

Overview Card details Eligibility Pros & Cons

Best for: Merchants processing tens of thousands of transactions a month who need scale, offline capture, and a reporting suite for a finance team

Watch out: 18-month contract is the longest on the market — setup takes weeks, not minutes

Not ideal if: Sole traders and small businesses — 18-month contract and slow onboarding are excessive for low volumes

Transaction fee~1.5% standard (custom quotes available)

Monthly fee£15–£22.50 (terminal rental)

Hardware cost£15–£22.50/month rental (promotional £0 on some contracts)

SettlementNext day

Contract18 months

Amex acceptedYes

Not ideal if: Sole traders and small businesses — 18-month contract and slow onboarding are excessive for low volumes

Watch out: 18-month contract is the longest on the market — setup takes weeks, not minutes

Offline transaction capture — useful for businesses in patchy-signal locations

Tailored rates become competitive at high volume (£20k+/month)

Reporting and chargeback handling designed for merchants with dedicated finance teams

18-month contract is the longest on this list and the hardest to exit early

Setup and onboarding are slower than fintech competitors — weeks, not minutes

POS integrations require direct confirmation for your specific setup

Merchant service provider fees in depth

The cost of card acceptance has three layers: the card network interchange fee, the acquiring bank’s margin, and any software or hardware fees. Payment service providers (PSPs) like Square, SumUp, Tide, and Stripe pool their merchant relationships and pass through a flat blended rate. Traditional acquirers like Worldpay and TakePayments quote interchange-plus or blended rates based on your card mix and volume.

For businesses processing under £100,000/year: a flat-rate PSP is almost always cheaper and faster to set up. For businesses above £200,000/year: a custom acquiring quote from Worldpay, TakePayments, or Dojo may produce lower effective rates, especially with a high proportion of low-cost debit transactions.

Merchant service provider features compared

POS software

Square has the deepest free POS software: table management, modifiers, open tabs, appointments, and loyalty. SumUp POS Lite covers basic counter service. Tide, myPOS, and Stripe Terminal handle transactions and reporting but are not EPOS platforms. Worldpay and TakePayments integrate with most third-party EPOS systems rather than providing one themselves.

Settlement and funding speed

myPOS settles to its wallet instantly. SumUp settles next day at 7am. Tide settles next working day. Square settles in 1–2 working days (instant payout option available for a fee). TakePayments and Worldpay settle next working day as standard.

Frequently asked questions

What is a merchant service provider?

A merchant service provider gives businesses the infrastructure to accept card payments. This includes a payment gateway (the connection between your checkout and card networks), a merchant account (the interim holding account for card funds), and usually hardware (a card reader or terminal). PSPs like Square and Stripe handle the acquiring relationship on your behalf.

Do I need a merchant account to accept card payments?

Not a dedicated one. Payment service providers like Square, SumUp, and Stripe maintain a pooled merchant account. You benefit from the same functionality without the underwriting process that individual merchant accounts require. A dedicated merchant account from an acquirer like Worldpay may offer lower rates at high volume but takes longer to set up.

What is the cheapest merchant service for a small business?

For low volume: SumUp Air at 1.69% PAYG with a £14.99 reader. For medium-to-high volume: Tide Card Reader on Sell In-Person at 0.79% + 3p. Both are no-contract and available online within an hour.

Fees verified against provider websites, May 2026. This is editorial content, not regulated financial advice.