Stripe vs Square UK 2026: Fees, Features & Which to Choose

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Stripe and Square are two of the most widely used payment providers in the UK, but they serve very different businesses. Stripe charges 1.5% + 25p per transaction for UK cards online and 1.7% + 5p for in-person payments. Square charges a flat 1.75% for all in-person card payments on its free plan. Neither requires a monthly fee or a fixed-term contract on their standard plans. Stripe is built for online businesses, developers, and SaaS companies needing a flexible API. Square is designed for face-to-face retailers, cafés, and market traders who want a free card reader and point-of-sale app from day one. Both are authorised by the Financial Conduct Authority as e-money institutions.

Key Facts: Stripe vs Square UK (August 2026)

Who Is This Page For?

This comparison is written for UK small business owners deciding between Stripe and Square. It is particularly useful if you are setting up your first payment system, switching from another provider, or running a business that takes payments both online and in person. It covers UK-specific fees, hardware costs, settlement speeds, and honest assessments of where each provider falls short. The page is not relevant to businesses outside the UK, as fees and product availability differ significantly in other markets.

Stripe vs Square: Fee Comparison for UK Businesses

What is Stripe?

Stripe is a payment technology company founded in 2010 in San Francisco. It launched in the UK in 2013 and has become one of the most widely used payment processors for online businesses, developers, and fast-growing companies. Its core product is a payment API that lets businesses build custom checkout flows, subscription billing, and marketplace payments. Stripe processes billions of pounds in transactions annually and is used by businesses ranging from solo freelancers to publicly listed companies.

In the UK, Stripe charges 1.5% + 25p per transaction for standard UK and European personal debit and credit cards processed online. European business cards cost 1.9% + 25p, and non-European cards cost 2.5% + 25p. There is no monthly fee on the standard plan, though Stripe Radar fraud tools, premium support, and custom pricing are available at additional cost. For a full breakdown of Stripe's UK fees and features, see the Stripe UK review on Compare Card Fees.

What is Square?

Square was founded in 2009 in San Francisco and entered the UK market in 2017. It is best known for its free card reader and point-of-sale app, which together give small businesses everything they need to take in-person payments at zero upfront cost. Square's hardware range now includes the Square Terminal (£149 + VAT) and the Square Register (£599 + VAT), alongside the free contactless reader that new UK accounts receive. The free POS software covers sales tracking, inventory, and basic reporting.

Square charges 1.75% per in-person transaction on its free plan, with no monthly fee and no separate authorisation charge on top. Keyed card payments cost 2.5%, and the Square Online store charges 1.9% per transaction. Square's paid plans — Square for Retail Plus at £49 + VAT per month and Square for Restaurants Plus at £60 + VAT per month — unlock lower rates and advanced features for higher-volume sellers. For the full picture, read the Square UK review on Compare Card Fees.

Square Transaction Fees UK: What You Actually Pay

Square's UK transaction fees depend on how the payment is taken. In-person payments via tap, chip, or swipe on the free plan cost 1.75% with no fixed pence charge on top. That means a £20 sale costs you 35p in processing fees. Online payments via the Square Online store cost 1.9% per transaction. Manually keyed card-not-present payments — such as orders taken by phone — cost 2.5%, which is noticeably higher and penalises businesses that regularly take telephone orders.

Square does not charge a separate authorisation fee, monthly minimum, or PCI compliance fee on its free plan. There is no charge for the first Square card reader. The Square Terminal at £149 + VAT and the Square Register at £599 + VAT are one-off hardware purchases with no ongoing rental fee. For businesses processing higher volumes, Square for Retail Plus at £49 + VAT per month reduces transaction costs and adds features including advanced inventory management.

Square International Transaction Fees: What UK Sellers Need to Know

Square's UK accounts are not designed for significant international sales volume. UK-based Square merchants can accept in-person payments from overseas cardholders at the standard 1.75% rate, as Square does not add a separate foreign card surcharge for in-person transactions. However, Square does not support multi-currency payouts, and UK merchants always receive settlements in sterling. There is no option to display prices in foreign currencies through Square's checkout or to receive funds in euros or dollars.

Stripe handles international payments significantly better. It accepts payments in over 135 currencies, applies a 2% currency conversion fee when conversion is required, and is available in 47 countries. For a UK business with customers in Europe, the US, or further afield, Stripe is the more capable choice. Businesses with a large proportion of overseas card transactions should also compare Adyen, which offers interchange-plus pricing and strong multi-currency support.

Stripe vs Square: Features Compared

Payment Methods Accepted

Stripe accepts Visa, Mastercard, American Express, Apple Pay, Google Pay, and a wide range of local payment methods including SEPA Direct Debit, Klarna, Clearpay, and Revolut Pay. It also supports ACH transfers for US customers and iDEAL for Dutch buyers, which matters if you sell internationally. Square accepts Visa, Mastercard, American Express, Apple Pay, and Google Pay for in-person payments, plus Clearpay on its online store. Square's payment method range is narrower, reflecting its focus on straightforward face-to-face retail rather than international e-commerce.

Hardware and Card Readers: Stripe vs Square

Square has a clear advantage for physical retailers. New Square accounts receive a free contactless card reader, and the Square Terminal (£149 + VAT) is a standalone device with a built-in receipt printer that requires no separate tablet or phone. The Square Register (£599 + VAT) is a full countertop system with a customer-facing display. Both devices connect directly to Square's free POS software without any additional setup cost.

Stripe's hardware range is more limited in the UK. The Stripe Reader M2 costs £59 and connects to a phone via Bluetooth. The Stripe Reader S700 costs £229 and runs a more capable Android-based interface. Neither Stripe device includes a built-in printer, and neither comes free for new accounts. Stripe's in-person hardware is clearly secondary to its online product. For a business whose primary channel is face-to-face, Square's hardware range is more practical and significantly cheaper to get started with.

Stripe Card Reader Fees and In-Person Costs

Stripe charges 1.7% + 5p per in-person transaction taken through the Stripe Reader M2 or Stripe Reader S700. At a £30 average transaction value, that works out at roughly 56p per payment. The Stripe Reader M2 costs £59 upfront. The Stripe Reader S700 costs £229. There is no monthly fee for using Stripe in person, and no minimum transaction volume is required. Stripe does not offer a free card reader for new UK accounts, which is a meaningful difference compared to Square's free reader offer.

Integrations and Developer Tools

Stripe is the stronger option for technical teams. Its API is regarded as one of the most well-documented in the payments industry, and it integrates with over 600 software platforms including Shopify, WooCommerce, Xero, Salesforce, and Slack. Stripe also offers pre-built UI components such as Stripe Elements and Stripe Checkout, which let non-developers add a polished payment form without writing code from scratch.

Square integrates with over 100 third-party apps, covering point-of-sale, accounting (Xero, QuickBooks), and e-commerce platforms. Its integrations are well suited to retail and hospitality workflows but lack the breadth Stripe offers for SaaS or subscription businesses. If your business needs a custom-built checkout, a subscription billing engine, or a marketplace payment flow, Stripe is the appropriate choice. Square's API is functional but not in the same league for complex builds.

International Support

Stripe accepts payments in over 135 currencies and is available in 47 countries. UK businesses selling to overseas customers can display prices in local currencies and receive payouts in sterling. Stripe handles currency conversion automatically, charging a 2% conversion fee on top of the standard rate. Square's international support is limited by comparison. UK Square accounts can accept some foreign card payments in person, but the platform is not designed for businesses with a significant international customer base. If you sell globally or plan to expand overseas, Stripe is the more capable choice.

Fraud Tools

Stripe Radar is Stripe's built-in machine-learning fraud detection tool. It is included free on all Stripe accounts and blocks high-risk transactions automatically using data from Stripe's global payment network. Stripe Radar for Fraud Teams, which adds custom rules and a review queue, costs an additional 2p per screened transaction. Square has its own fraud monitoring, which runs automatically on all transactions, but it is less configurable and does not offer the same level of custom rule-setting. For businesses with elevated fraud exposure — such as those selling digital goods or high-value items online — Stripe's tools are more mature. For more on protecting your business from card fraud, see the card fraud prevention guide for UK businesses.

Customer Support

Both providers have faced criticism for their support quality. Stripe offers 24/7 support via chat and email on all paid plans, but standard free-plan users report slower response times and reliance on documentation. Phone support is available only on Stripe's premium paid support packages. Square offers phone support during UK business hours, plus chat and email. Neither provider offers a dedicated account manager on entry-level plans. Businesses that need hands-on support should factor this in — neither Stripe nor Square will hold your hand through setup the way a traditional acquirer might.

Pros and Cons

Stripe Pros and Cons

Pros

• Highly flexible API with detailed documentation, suitable for custom-built checkout flows
• Supports over 135 currencies and 47 countries, making it the better option for international businesses
• Wide range of payment methods including Klarna, Clearpay, and local European options
• Stripe Radar fraud detection is included free and uses global transaction data to block suspicious payments
• No monthly fee and no fixed-term contract on the standard plan
• Pre-built UI components (Stripe Elements, Stripe Checkout) reduce development time for online checkouts

Cons

• In-person hardware is expensive relative to Square. The Stripe Reader S700 costs £229, and there is no free reader for new accounts
• Customer support on the free plan is slow. Phone support requires a paid premium package
• Account holds and fund freezes have been reported by UK merchants, particularly newer businesses, which can disrupt cash flow
• Non-European card fees reach 2.5% + 25p per transaction, which adds up quickly for international-facing businesses with a mixed card origin profile

Square Pros and Cons

Pros

• Free card reader for new accounts removes the upfront barrier for new or seasonal businesses
• Free POS software covers inventory, sales reports, and basic staff management at no extra cost
• 1.75% flat rate for all in-person payments is simple to budget and competitive for lower-volume sellers
• Next-business-day settlement is free by default, getting funds into your account faster than Stripe's standard two-day cycle
• Square for Restaurants and Square for Retail offer purpose-built features for hospitality and retail without needing third-party add-ons

Cons

• Limited international capability. UK accounts are not well suited to businesses with significant overseas sales volume
• Keyed card transactions cost 2.5%, which is noticeably higher than the in-person rate and penalises businesses that take orders by phone
• Square's e-commerce tools lag behind Stripe for developers. Custom integrations require more effort and the API is less mature
• Account freezes have also been reported by UK Square users, often without advance warning, leaving businesses unable to process payments temporarily

Which is Better For...?

Small Retail Businesses and Market Traders

Square is the better choice for small physical retailers, market traders, and pop-up sellers. The free card reader means you can start taking payments the same week with no hardware cost. The flat 1.75% in-person rate is easy to predict, and the free POS app handles stock and sales without requiring a separate subscription. Stripe can take in-person payments, but the hardware costs more and the POS tools are less developed. For more advice on payment options for independent shops, see the payments guide for independent retailers.

Online-Only E-commerce Businesses

Stripe is clearly the better fit for e-commerce businesses that take most or all of their payments online. The 1.5% + 25p rate for UK cards is lower than Square's 1.9% online rate, and the range of supported payment methods — including Klarna, Clearpay, and Apple Pay — matches what online shoppers expect. Stripe's Shopify and WooCommerce integrations are well established, and the hosted Stripe Checkout page requires minimal technical effort to implement. For a broader comparison of online payment options, see the e-commerce payment gateways guide.

Cafés, Restaurants, and Hospitality

Square has a dedicated Square for Restaurants product that covers table management, order routing to the kitchen, and tipping prompts. The Square Terminal fits neatly on a counter or can be carried to tables. At £149 + VAT it is significantly cheaper than most hospitality-grade card machines from traditional acquirers. Stripe is a workable option if you have a developer to build a custom ordering system, but Square's out-of-the-box hospitality tools are faster to deploy and require no technical expertise. See also our payments guide for UK restaurants for a broader comparison including Dojo and SumUp.

High-Volume or Fast-Growing Businesses

At high monthly volumes, both providers' standard rates become expensive. A business processing £50,000 a month online pays around £775 per month in fees with Stripe at 1.5% + 25p (assuming roughly 500 transactions), compared to around £950 per month with Square Online at 1.9%. Stripe offers custom pricing for businesses processing over £250,000 per month — contact Stripe directly to negotiate. Square's Plus plans reduce costs for retail and restaurant businesses above a certain volume, but for pure e-commerce scale, Stripe's custom pricing and global infrastructure give it the edge. Businesses at that level should also consider Adyen or Worldpay for interchange-plus pricing. For guidance on negotiating better rates, see the how to negotiate card processing fees guide.

Is Stripe or Square Better for Small Business?

For most UK small businesses, the answer depends on where you sell. Square is better for small businesses that sell face to face — the free reader, free POS software, and flat 1.75% rate make it the most accessible starting point. Stripe is better for small businesses that sell primarily online or need to accept payments in multiple currencies. At low transaction volumes, Square's in-person rate works out cheaper than Stripe's 1.7% + 5p structure. As average transaction values rise above roughly £25, the two become very close in cost for in-person payments.

Our Verdict: Stripe vs Square UK 2026

Stripe and Square are both credible, well-regulated providers with no fixed-term contracts and transparent standard rates. The decision between them is less about one being universally better and more about which channel you primarily use to sell. If your business takes most of its payments online and you want flexibility to customise your checkout, accept multiple payment methods, and sell internationally, Stripe is the stronger pick. Its API is more powerful, its fraud tools are more configurable, and its international reach is unmatched among no-monthly-fee providers.

If you sell face to face and want to get started with minimal cost and complexity, Square is hard to beat. A free card reader, free POS software, and next-day settlement at 1.75% per transaction is a genuinely good deal for a small retailer or café. The hardware range is practical, and the purpose-built restaurant and retail products save time that would otherwise go into building workflows from scratch. The honest caveat for both providers is that customer support is not a strength. Neither will pick up the phone quickly if something goes wrong, and both have a history of unexplained account freezes that can cause serious disruption.