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Comparisons

SumUp vs Square in 2026: Which Should Your Small Business Pick?

Two of the UK's most popular no-monthly-fee options, head to head. We break down fees, hardware and who each one actually suits.

By The POS editorial teamPublished: 7 min read
Contactless card payment on a reader

SumUp and Square are the default picks for UK small businesses that want card payments without a contract. They look similar on the surface — here's how to choose.

The short version

Choose SumUp if you want the simplest, cheapest way to take a card. Choose Square if you want a genuinely good free POS app with inventory, online ordering and room to grow. Our full SumUp vs Square breakdown has the side-by-side table.

Fees

SumUp is 1.69% standard (from 0.99% on Payments Plus); Square is a flat 1.75% in person. Neither has a monthly fee on its standard plan. Which is cheaper depends on your volume — run it through the fee calculator.

Who each one suits

A rough rule of thumb:

  • Market stall, tradesperson, mobile seller → SumUp (see best for market stalls)
  • Café, small retail, service business → Square (see best for cafés)
  • Selling online and in person → Square's free online store edges it

FAQs

Is SumUp or Square better for a café?

Square, usually — its free POS app handles menus, tipping and reporting better. SumUp is the better pick if you only need simple card payments with the lowest possible cost.