Best Payment Gateway UK 2026: Top Options for Small Businesses

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A payment gateway is the software layer between your checkout and the card networks. For most small UK businesses, the gateway is bundled with the payment processor — the provider handles both. The decision is really about what kind of business you are and how you sell.

Best payment gateways for UK businesses compared

Fees verified against provider websites, May 2026. Online rates shown for UK-issued cards.

Best payment gateway picks by business type

Best for in-person and online: Square

Square handles card-present payments at 1.75% and online payments at 1.4% + 25p with the same account and inventory. You can be trading online within an hour without writing a line of code. Square Online is a full e-commerce store that shares its product catalogue with the card reader — a genuine omnichannel setup at no extra charge.

Best for recurring payments: GoCardless

GoCardless processes direct debit payments at 1% + 20p on the Standard plan. It is not a card gateway — customers pay via bank account, not card. For subscriptions, memberships, and invoice collections, GoCardless’s variable direct debit outperforms card-based gateways on cost and failure rate.

Best for developer-led checkout: Stripe

Stripe is the standard for custom online checkout. Its API handles one-time payments, subscriptions, split payments, and marketplace flows. The documentation is the best in the industry. For a business with a developer and a specific checkout requirement, Stripe is the correct infrastructure choice.

Best payment gateway providers

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

GoCardless

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Visit GoCardless →

Overview Card details Eligibility Pros & Cons Key Features

Best for: Businesses collecting recurring payments, subscriptions, or variable direct debits

Transaction fee1% + 20p (Standard, capped at £4)

Monthly feeNone (Standard); optional £50/month for custom bank name

Hardware costNone — software only

SettlementT+2 to T+3 (bank-dependent)

ContractNo lock-in

Amex acceptedNo — bank-to-bank only

1% + 20p capped at £4 — one of the lowest costs for high-value recurring payments

Direct debit mandates do not expire — customers pay every cycle without re-authorising

Failure recovery tools cut average failure rate to around 2.2% across all transactions

No contract and no hardware required — software-only with fast API onboarding

350+ integrations including Xero, QuickBooks, Salesforce and most SaaS billing platforms

No card acceptance — bank-to-bank and direct debit only; unsuitable for in-person payments

First payment takes up to 7 working days to clear — a cash flow gap at the start of each new mandate

Settlement is T+2 to T+3 depending on the customer’s bank

Disputes can reverse payments weeks after collection — limited seller protection vs card payments

Advanced features (real-time bank data, Instant Bank Pay) require higher-tier plans

Direct debit collection with failure recovery — average failure rate around 2.2%

Mandates persist indefinitely — no re-authorisation needed each billing cycle

Instant Bank Pay (Open Banking) for one-off payments alongside recurring collections

350+ integrations covering accounting, CRM and SaaS billing platforms

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

Payment gateway fees compared

Online transaction fees vary by card origin and business model. For a UK retail business with domestic customers:

• Square Online: 1.4% + 25p per UK card transaction
• GoCardless Standard: 1% + 20p per bank payment (no card network fee)
• Stripe: 1.5% + 20p for UK cards; 2.5% + 20p for non-UK cards
• Worldpay: quote-based; typically competitive at volume above £100,000/year

GoCardless is cheapest for recurring payments by bank. Square is cheapest for standard one-off card transactions from UK customers. Stripe’s 1.5% + 20p costs marginally more than Square online but offers deeper API functionality.

Payment gateway features compared

Hosted vs API-integrated checkout

Square and GoCardless offer hosted checkout pages with no coding required. Stripe is primarily API-first: you write the integration or use a pre-built plugin (Shopify, WooCommerce). Worldpay offers both but setup requires an account manager. For businesses without a developer, Square or GoCardless is the correct starting point.

Recurring billing and subscriptions

GoCardless is purpose-built for direct debit. Stripe Billing handles card-based subscriptions with dunning, metered billing, and webhook events. Square has basic recurring invoice functionality but no subscription management platform. Worldpay offers recurring billing via its hosted API but configuration is more complex.

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

Frequently asked questions