Best Payment Gateways for UK Businesses (2026)
Square is the default: 1.4% + 25p online, no monthly fee, no contract. Stripe suits developers and SaaS. GoCardless is the only choice for recurring revenue.
- Square Online charges 1.4% + 25p per UK card transaction, no monthly fee.
- Free website and checkout builder included with every Square account.
- Next-day bank transfer as standard; instant payout available for a fee.
All Payment Gateways at a Glance
Compare the five providers side by side — pricing verified against provider websites, May 2026.
| Provider | Online rate (UK cards) | Best for | Monthly fee | Action |
|---|---|---|---|---|
|
Square Top Pick |
1.4% + 25p | Online + in-person under one account, free POS | None | Visit → |
 Stripe Developer Choice |
1.5% + 20p | SaaS, subscriptions, marketplaces, custom checkouts | None | Visit → |
 PayPal Checkout Trust |
From 1.20% + 30p | B2C ecommerce; brand recognition at checkout | None on standard | Visit → |
 GoCardless |
1% + 20p capped £4 (UK Bacs) | Recurring billing, B2B invoicing, subscriptions | None | Visit → |
 Worldpay |
From 1.3% + 20p (Simplicity); bespoke above £75k/year | Established and high-volume businesses | From £19.95/mo gateway + minimums | Visit → |
Online card rates shown apply to standard UK consumer cards (debit and credit). Premium UK cards, EEA cards, and international cards carry higher rates at most providers. Pricing verified against provider websites, May 2026.
Top Payment Gateway Picks for UK Businesses
| Situation | Provider | Why it wins | Key trade-off | |
|---|---|---|---|---|
| Best all-rounder for UK SMBs | Square | One account for online and in-person, free POS, no monthly fee, Amex at the same rate | 1.75% in-person is the highest among no-contract providers | View pricing |
| Best for online-only and developers | Stripe | 1.5% + 20p with the deepest API for subscriptions, marketplaces, and custom checkouts | No in-person payments. Custom integration usually needs a developer. | View pricing |
| Best for checkout conversion | PayPal | Brand recognition lifts checkout completion. From 1.20% + 30p on advanced checkout. | Dispute resolution favours buyers. Account holds reported on new sellers. | View pricing |
| Best for recurring and B2B | GoCardless | 1% + 20p capped £4 per UK Direct Debit (Standard plan). Replaces card chargebacks with the Direct Debit Guarantee. | Settlement 3–5 working days on Standard. Not for one-off retail sales. | View pricing |
| Best at higher volume | Worldpay (Global Payments) | Simplicity from 1.3% + 20p online for <£75k/year; interchange-plus negotiated above that — can drop to ~0.75% + 5p at scale. | 18–36 month contracts. Gateway, PCI, and minimum monthly fees apply. | View pricing |
Why Square Is the Default Payment Gateway for UK Small Businesses
Most UK small businesses don’t need a custom payment API. They need to take card payments online and in person without paying a monthly fee, signing a contract, or wiring two systems together. Square is the only major gateway that ships with all of that included — one account, one dashboard, a free POS app, and a Reader from £19 + VAT.
The online card rate is 1.4% + 25p for UK cards, slightly lower than Stripe’s 1.5% + 20p on transactions under about £50. The in-person rate is 1.75% flat including Amex, which is the highest among no-contract providers but is the same headline rate Square charges every merchant regardless of size or category. There’s no negotiation, no surcharge for premium cards, and no separate Amex agreement.
Square’s POS software is what tilts the maths. The free plan covers unlimited employees, real-time sales analytics, inventory, customer CRM, gift cards, and a free online store with the same 1.4% + 25p rate. Most small businesses that would otherwise pay £50 to £100/month for a separate POS subscription get the same functionality at no extra cost. That offset alone covers the gap between Square’s headline in-person rate and a cheaper-on-paper alternative.
Not right if: you process more than roughly £6,000/month in card takings — at that volume the 1.75% flat starts to look expensive against negotiated rates. Or if your business model is online-only and you need bespoke checkout flows or marketplace splits, in which case Stripe’s API is the better fit.
Stripe vs PayPal: The Other Decision Online Businesses Face
If you’re online-only, the choice usually narrows to Stripe versus PayPal — or both, used together. Stripe charges 1.5% + 20p per UK card transaction. PayPal’s advanced checkout starts at 1.20% + 30p on UK cards, with the PayPal wallet itself at a separate rate. On a £50 transaction, Stripe costs 95p and PayPal costs 90p. The per-transaction difference is small. The platforms differ on what they’re actually built for.
Stripe is the most powerful payment API on the market. If you need custom checkout flows, recurring subscriptions, usage-based billing, marketplace split payments, or invoicing inside your own application, Stripe handles complexity that PayPal can’t match. Every SaaS, platform, and subscription business defaults to Stripe for a reason: the developer experience, documentation, and primitives are years ahead.
PayPal’s strength is the button at checkout. Customers recognise PayPal and trust it; for B2C ecommerce, adding a PayPal option alongside card payment can lift conversion by single-digit percentage points. The conversion uplift is real and is rarely worth giving up. The trade-off: PayPal’s dispute resolution is buyer-friendly, account holds on new or higher-risk sellers are common, and the rate structure has more moving parts than Stripe’s flat headline.
Most online retailers run both. Stripe handles cards as the primary processor; PayPal sits alongside as a secondary option to capture customers who prefer it. The cost of running two gateways is the integration overhead (most ecommerce platforms make this a tick-box), and the upside is measurable conversion at the checkout page.
The Real Cost of Payment Gateways at Different Monthly Volumes
| Monthly volume | Square (1.4% + 25p) | Stripe (1.5% + 20p) | PayPal (1.20% + 30p) | Worldpay (typical) |
|---|---|---|---|---|
| £5,000 (100 transactions) | £95 | £95 | £90 | Custom quote, often higher at this tier |
| £10,000 (200 transactions) | £190 | £190 | £180 | Custom quote |
| £20,000 (400 transactions) | £380 | £380 | £360 | Custom quote |
| £50,000 (1,000 transactions) | £950 | £950 | £900 | Around £700–£850 typical interchange-plus |
At small-business volumes the headline-fee differences between Square, Stripe, and PayPal are marginal. At £20,000/month, the gap between Stripe and PayPal is £20. That’s not the deciding factor — integration fit, checkout experience, and feature set are. Choose on those, then the fee falls into place.
Worldpay (now under Global Payments after the January 2026 acquisition) has two distinct pricing modes. Its Simplicity plan publishes rates from 1.5% in-person and 1.3% + 20p online for businesses under £75,000 a year — competitive with Square and Stripe on headline numbers. Above that turnover, Worldpay shifts to negotiated interchange-plus, where rates can fall to roughly 0.75% + 5p at scale. The technical break-even where interchange-plus beats flat-rate is closer to £10–£20k/month in card volume; the practical break-even, once you factor in the £19.95/mo gateway, PCI fees, monthly minimums, and an 18–36 month contract, is more like £20–£50k/month for most businesses.
Do You Need a Merchant Account for a Payment Gateway?
Square, Stripe, and PayPal are payment facilitators: they process card transactions on your behalf without you needing a separate merchant account. You sign up, integrate, and start accepting payments — usually inside a working day. That’s why they dominate the SMB market.
Worldpay operates the older model: a dedicated merchant account in your business name, settled directly through your bank, with negotiated interchange-plus rates and a contract. This gives more control over chargebacks and pricing at scale, but the setup is slower (often 2–6 weeks), the underwriting is stricter, and the contract usually carries minimum monthly fees and an early termination clause.
For most UK businesses under £20,000/month in card volume, a payment facilitator is simpler, faster, and competitive on cost. A dedicated merchant account becomes mathematically cheaper around £10–£20k/month thanks to UK interchange caps (0.2% on consumer debit, 0.3% on consumer credit), but the contract overhead, monthly minimums, and PCI fees push the practical break-even higher. A reasonable rule of thumb: stay on a facilitator until you’re processing at least £20,000/month and have predictable, mostly-debit volume.
GoCardless sits outside the card network entirely. It collects via UK Bacs Direct Debit and through Open Banking on its Instant Bank Pay product, bypasses the card schemes, and replaces card chargebacks with the Direct Debit Guarantee. For recurring B2B billing and subscriptions, that combination — 1% + 20p capped at £4 on the Standard plan, no chargeback risk on unauthorised use beyond the Guarantee, no PCI burden — is structurally cheaper than card processing once monthly volume passes a few thousand pounds.
Every Payment Gateway, Reviewed
Square
Stripe
PayPal Commerce Platform
GoCardless
Worldpay
BusinessExpert Take: What Payment Gateway Rankings Miss
Most payment gateway comparisons rank by transaction fee. At small-business volumes the fee difference between the top three providers is less than £30 a month. That’s not the decision point. The decision point is where the gateway sits in your stack.
If you sell in person and online, the integration overhead of running two providers usually outweighs any per-transaction saving — one Square account beats Stripe + a separate POS for most independent retailers, cafés, and service businesses. If you’re online-only with a custom build or a SaaS product, Stripe’s API removes weeks of engineering. If your customer base recognises and trusts the PayPal button, leaving it off the checkout page costs more than running it.
The factor that actually decides for most businesses isn’t the headline rate. It’s the answer to a single question: where will my customers expect to pay, and what already integrates with the tools I run my business on? Match the gateway to that, then check the maths is reasonable. Doing it the other way round — picking the cheapest rate and forcing your business around it — is how most providers end up replaced inside two years.
Which Payment Gateway Fits Your Business?
| Your situation | Best starting point |
|---|---|
| Independent retailer, café, salon, or service business taking payments online and in-person | Square. One account, free POS, no monthly fee. |
| Pure ecommerce store selling to UK consumers | Stripe as the primary card processor + PayPal as a checkout option. Best of both. |
| SaaS, subscription, or marketplace business | Stripe. Recurring billing, usage metering, dunning, and Connect built in. |
| B2B invoicing or subscription with mostly UK customers | GoCardless. 1% + 20p capped £4 per Direct Debit; chargeback-resistant; simple bank-to-bank. |
| Established business processing £20,000+/month in cards | Get a Worldpay quote (Simplicity from £75k turnover, bespoke above). Compare against Stripe’s and Square’s flat rates at your volume. |
| International seller with multi-currency volume | Stripe (135+ currencies, automatic conversion) or Adyen (enterprise alternative). |
Payment Gateway FAQs
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Can I use multiple payment gateways at the same time?
Yes, and many UK businesses do. The most common stack is Stripe (or Square) as the primary card processor with PayPal sitting alongside as a checkout option. The integration overhead is minor on most ecommerce platforms; the conversion uplift from offering both is measurable at checkout.
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What is the cheapest payment gateway for UK businesses?
It depends on transaction size. For online card payments under £50, Square at 1.4% + 25p is marginally cheaper than Stripe’s 1.5% + 20p; above that, Stripe is cheaper. PayPal advanced checkout at 1.20% + 30p is the cheapest at any volume above roughly £30 per transaction. For recurring UK Direct Debit, GoCardless at 1% + 20p capped £4 (Standard) is structurally cheaper than any card processor.
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Do I need a merchant account?
Not with Square, Stripe, or PayPal — they are payment facilitators that process on your behalf. Worldpay (now under Global Payments) and other traditional acquirers issue a dedicated merchant account in your business name. Below roughly £20,000/month in card volume, a facilitator is usually faster to set up and competitive on cost once you factor in the contract overhead.
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How long do payouts take?
Square: next working day standard. Stripe: 1–3 working days standard, with instant payout available for 1% (minimum 40p). PayPal: instant to PayPal balance, 1 working day to bank. Worldpay: typically next working day under merchant agreement. GoCardless: 3–5 working days on Standard, faster on Plus and Pro plans.
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Do these gateways accept American Express?
Square uses the Amex OptBlue programme to accept Amex at the same 1.75% in-person and 1.4% + 25p online rate as other cards — a real differentiator if a meaningful share of your customers pay by Amex. Stripe charges UK Amex at 2.0% + 20p (premium over its 1.5% + 20p UK rate). PayPal accepts Amex at the standard wallet rate of 2.9% + 30p. Worldpay’s Amex rate is set in the merchant agreement. GoCardless does not handle Amex — it operates over Bacs, not the card schemes.
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Are Apple Pay and Google Pay supported by default?
Yes — Stripe, Square, and PayPal enable Apple Pay and Google Pay on both online and in-person flows by default once the account is verified. Worldpay supports both but configuration is part of the merchant onboarding. The card-network rate applies; there is no separate digital-wallet surcharge at any of these providers.
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What about chargebacks and disputes?
Stripe charges £20 per dispute, and from 2026 it does not refund this fee even when the merchant wins the case. Square dispute fees are typically £15–£20 per case. PayPal disputes cost roughly £14 each and the resolution process is buyer-friendly. Worldpay handles disputes case-by-case under the merchant agreement. GoCardless replaces chargebacks with the Direct Debit Guarantee — the indemnity model is fundamentally different and is the main reason recurring-billing businesses move away from cards.
Final Verdict on UK Payment Gateways
Square is the right default for the UK small business that doesn’t already know which gateway it needs — one account, free POS, no monthly fee, and a fee structure that makes sense without a spreadsheet. Add Stripe instead if you’re online-only and developer-led, or run both. Add PayPal alongside if you sell to consumers. Use GoCardless if your model is recurring B2B billing. Only commit to Worldpay once you’re processing £20,000+/month and the bespoke quote, after the gateway, PCI, and minimum-monthly fees, genuinely beats the flat rate at your card mix. The fee difference between the top three at typical small-business volumes is smaller than the cost of choosing the wrong fit.
Pricing, fees, and feature claims were verified against each provider’s primary website and published pricing pages. Selection and rankings reflect current pricing, feature breadth, and operational fit for UK businesses as of May 2026. Rates and features change — confirm current pricing with each provider before signing up.
Some links on this page are affiliate links. If you sign up through one, we may earn a commission at no extra cost to you. This does not affect our editorial judgements or rankings. See our editorial policy for details.
Pricing, fees, and feature claims were verified against each provider’s primary website and published pricing pages. Selection and rankings reflect current pricing, feature breadth, and operational fit for UK businesses as of May 2026. Rates and features change — confirm current pricing with each provider before signing up.
Some links on this page are affiliate links. If you sign up through one, we may earn a commission at no extra cost to you. This does not affect our editorial judgements or rankings. See our editorial policy for details.