Square POS vs SumUp POS

Quick Verdict

Square POS is the stronger all-round choice for UK small businesses that need flexible, scalable point-of-sale tools across retail, hospitality, and service sectors. SumUp POS is an excellent lightweight option for sole traders and micro-businesses — particularly cafés, salons, and takeaways — who want a simple, no-fuss setup with minimal upfront cost. If you anticipate growth or need deeper business management tools, Square POS is likely the better long-term investment.

Key Differences

The most notable difference between Square POS and SumUp POS is their scope. Square POS offers a more comprehensive ecosystem, including staff management, detailed inventory tracking, and a wider range of integrations — many of which are available on the free tier. SumUp POS keeps things simpler and more streamlined, which suits smaller operations but can feel limiting as a business scales. Both products charge transaction fees rather than monthly subscription fees at entry level, though advanced features on each platform sit behind paid tiers. Neither product offers direct Making Tax Digital (MTD) filing to HMRC, so UK businesses will still need to pair either solution with dedicated accounting software such as Xero or QuickBooks to meet MTD obligations.

Features

Square POS provides a notably broad feature set even on its free plan. Integrated payment processing supports chip and PIN, contactless, and digital wallets. The platform includes real-time inventory management, employee scheduling, customer relationship tools, and sales analytics — making it genuinely versatile across retail, food service, and appointment-based businesses. Hardware such as card readers and terminals must be purchased separately, and certain advanced modules like payroll or advanced reporting require paid add-ons.

SumUp POS covers the essentials confidently: secure payment processing, product catalogues, sales reporting, and basic inventory management. It integrates neatly with SumUp's own card readers, which are among the most affordable on the UK market. The interface is clean and straightforward, making onboarding very quick. However, businesses with more complex inventory needs or those requiring detailed accounting integrations may find the platform's capabilities stretched. GDPR-compliant data handling is present on both platforms, which is an important consideration for any UK business collecting customer data.

Pricing

Square POS is free to download and use, with payment processing fees of 1.75% per in-person transaction in the UK. Paid add-ons vary; for example, Square for Restaurants and Square Appointments have their own monthly fees starting from approximately £0 to £69 per month depending on the plan. Hardware costs extra, with the Square Reader starting at around £19 plus VAT.

SumUp POS also operates on a freemium model, with its basic POS software available at no monthly cost. SumUp's transaction fee for card payments is 1.69% per transaction, slightly lower than Square's standard rate. SumUp's card readers start from approximately £39 for the Solo model. A paid SumUp POS Pro subscription unlocks additional features, typically priced at around £49 per month, though pricing can vary — always check the SumUp website for the latest UK pricing.

Which Should You Choose?

Choose Square POS if you run a retail shop, multi-staff café, hair salon with bookings, or any business that is likely to grow and needs scalable tools. Its richer feature set, robust inventory management, and wider integration options make it the more future-proof solution for UK small businesses.

Choose SumUp POS if you are a sole trader, market vendor, or small independent takeaway or café looking for the simplest possible setup with low transaction fees and affordable hardware. It is particularly well-suited to businesses that process straightforward transactions without complex stock or staff requirements.

Whichever platform you select, remember to connect it with MTD-compatible accounting software to ensure your business remains compliant with HMRC's Making Tax Digital requirements for VAT and income tax reporting.