Square POS vs Zettle Go: Which Is Right for Your UK Small Business?

Quick Verdict

For UK small businesses wanting the most feature-rich free POS solution with room to grow, Square POS is the stronger all-round choice, particularly for retailers, cafes, and salons managing staff and inventory. Zettle Go suits mobile traders, market stall holders, and sole traders who need a straightforward, no-fuss card payment solution without the complexity of a full POS ecosystem. Both serve very different growth ambitions, so your decision largely depends on how advanced your day-to-day requirements are.

Key Differences

Square POS functions as a comprehensive business management platform, combining payment processing with staff management, inventory tracking, reporting dashboards, and integrations with third-party tools including accounting software like Xero and QuickBooks. This broader ecosystem makes it considerably more scalable for growing businesses.

Zettle Go, backed by PayPal, focuses primarily on straightforward sales processing and basic inventory management. It is leaner by design, which is an advantage for simplicity but a limitation for businesses requiring deeper operational tools. Zettle integrates natively with PayPal, which may appeal to businesses already embedded in that ecosystem.

A notable UK-specific consideration is GDPR compliance — both platforms handle customer data and must be assessed accordingly for your privacy policy obligations. Neither platform offers direct Making Tax Digital (MTD) filing to HMRC, so both will require a compatible bridging solution or separate MTD-compliant accounting software such as FreeAgent, Xero, or QuickBooks for VAT submissions.

Features

Square POS provides integrated payment processing, a customisable product library, staff clock-in tools, sales reporting, customer directory, and loyalty programme features. Advanced capabilities such as team management, payroll, and marketing tools are available as paid add-ons. UK bank integrations are supported, and the platform connects with a wide range of POS hardware including card readers, stands, and receipt printers available to purchase separately.

Zettle Go offers product catalogues, basic sales history, and refund processing. Its card reader hardware is straightforward and competitively priced for entry-level use. However, features like detailed staff management and advanced reporting are limited compared to Square POS. Zettle's integration with PayPal does offer a degree of financial oversight, but dedicated accounting integrations are less extensive.

Pricing

Both platforms offer a free tier with no monthly software subscription fee. Square POS charges a standard transaction fee of 1.75% per card-present payment in the UK. Its hardware, such as the Square Reader, starts at around £19 + VAT. Paid add-ons such as Square for Restaurants or Square Appointments carry additional monthly fees.

Zettle Go also charges a transaction fee starting at 1.75% per card payment in the UK, reducing to 1% for PayPal QR code transactions. The Zettle Reader 2 is available for approximately £29 + VAT for first-time buyers. Advanced features require upgrading to paid tiers, adding to monthly overheads.

Both platforms are broadly comparable on transaction costs, so hardware price and feature requirements should drive your decision more than processing fees alone.

Which Should You Choose?

Choose Square POS if you run a retail shop, café, salon, or any business managing multiple staff members, a substantial product inventory, or multiple locations. The richer feature set and broader integration options make it better suited to businesses planning to scale.

Choose Zettle Go if you are a sole trader, market vendor, or mobile business owner seeking a simple, reliable way to accept card payments with minimal setup and administration. Its PayPal integration also suits businesses already using PayPal for online sales.

Whichever you choose, remember to pair your POS solution with MTD-compatible accounting software to meet your UK VAT obligations under Making Tax Digital.