How to Accept Card Payments in Your Small Business

How to Accept Card Payments in Your Small Business – Small Business Software Guide UK

Why Accepting Card Payments Matters for UK Small Businesses

Cash use in the UK has declined sharply over the past decade, and customers increasingly expect to pay by card, contactless, or mobile wallet. If your small business cannot accept card payments, you risk losing sales to competitors who can. Setting up a card payment system is more affordable and straightforward than ever, with several excellent options available to UK businesses of every size.

Beyond convenience, a good payment setup also helps with Making Tax Digital (MTD) compliance by keeping clean digital records of every transaction. Many modern point-of-sale (POS) systems integrate directly with accounting software such as Xero, FreeAgent, and Sage, reducing manual bookkeeping significantly.

What You Need to Get Started

To accept card payments, you will typically need three things: a card reader, a POS software app, and a merchant account or payment processor. Most modern solutions bundle all three together, so you can be up and running within a day. You will also need a smartphone or tablet to run the software, and a reliable internet connection for processing transactions.

It is worth considering your trading environment — whether you sell from a fixed location, a market stall, or a mobile service — as this will influence which solution suits you best. GDPR compliance is also a consideration; ensure any system you choose stores customer payment data securely and in line with UK data protection law.

The Best Card Payment Solutions for UK Small Businesses

Square POS

Square offers a free POS software tier with no monthly fee, making it an excellent starting point for new businesses. Its card reader connects via Bluetooth and transaction fees are transparent and clearly published for UK merchants. Square also integrates with Xero, making it a strong choice if you want tidy accounts alongside your payments.

Zettle Go

Zettle (owned by PayPal) is a hugely popular choice among UK small business owners, particularly market traders, pop-up shops, and sole traders. The free Zettle Go app is simple to set up and accepts chip and PIN, contactless, and mobile wallet payments. It is a well-trusted brand in the UK market with strong customer support.

SumUp POS

SumUp offers an affordable freemium model that is ideal for businesses just starting out with card payments. The app is quick to set up and integrates seamlessly with SumUp's own card readers. Its straightforward interface means minimal staff training is required, which is a real advantage for busy small teams.

Lightspeed Retail

At £89 per month, Lightspeed Retail is a premium option suited to established retail or hospitality businesses that need integrated inventory management alongside payments. It is cloud-based and iOS friendly, making it easy to manage your shop floor from a tablet. The added depth of reporting and stock control justifies the cost for growing businesses.

Shopify POS

Shopify POS at £89 per month is the standout choice if you sell both in-store and online. It unifies your inventory across both channels so you never oversell, and the clean app works on iOS and Android. If you already use Shopify for e-commerce, adding in-person payments is a natural and efficient step.

Fresha

Fresha is specifically designed for salons, spas, and wellness businesses, combining bookings, CRM, and card payments in one free platform. Its generous free tier makes it accessible for sole traders and small studios, and the interface is genuinely intuitive. Fresha handles card-on-file and no-show protection particularly well.

Mindbody

Mindbody at £129 per month is built for fitness studios, gyms, and wellness centres that need a full business management platform. It combines booking, CRM, and payments with a built-in client discovery marketplace that can help attract new customers. Dedicated iOS and Android apps are included, making it accessible for both staff and clients.

Key Fees and Costs to Understand

Most card payment providers charge a transaction fee — typically between 1.25% and 2.5% per transaction in the UK — rather than a monthly fee on their free tiers. It is important to calculate your expected monthly card turnover and compare the true cost of each option before committing. Some providers, such as Lightspeed and Shopify, charge a monthly subscription but offer lower transaction rates in return.

Square, Zettle, SumUp: No monthly fee; pay-per-transaction pricing
Lightspeed Retail: From £89/month with integrated payments
Shopify POS: From £89/month; best value if you also sell online
Fresha: Free tier available; charges apply on processed payments
Mindbody: From £129/month for full platform access

Getting Set Up: Practical Next Steps

Start by signing up for your chosen platform online — most free-tier options like Square, Zettle, and SumUp can have you processing payments within 24 to 48 hours. Order your card reader, download the app, and connect your business bank account to receive payouts. Most UK high street and challenger bank accounts, including Monzo Business, Starling, and Barclays, are compatible with these platforms.

Once live, link your payment data to your accounting software to stay on top of Making Tax Digital obligations and keep your records clean from day one. Accepting cards is one of the simplest improvements you can make to your small business — start with a free tier, and scale your tools as your business grows.