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Square vs SumUp (2026): Which POS & Payment System Wins?

By ToolVS Research Team · Updated April 10, 2026 · Based on hands-on testing

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30-Second Answer

Pick Square for the most complete free POS ecosystem — free inventory management, employee tools, online store, and invoicing all built-in. Pick SumUp for the simplest card reader setup, especially in Europe where SumUp's 1.69% fee and wide availability make it the go-to for market traders, freelancers, and micro-businesses. Square wins on features; SumUp wins on European simplicity.

Our Verdict

Best Free POS Ecosystem

Square

4.6/5
Free + 2.6% (US) / 1.75% (UK)
  • Free POS software with inventory management
  • Free online store included
  • Employee management and timesheets
  • US-centric, fewer countries than SumUp
  • Account holds/freezes reported by users
  • Higher US transaction fee (2.6%)
Get Square Free →
Best Simple Card Reader

SumUp

4.4/5
1.69% per transaction
  • 1.69% flat rate — among lowest in Europe
  • Available in 35+ countries
  • Simple, reliable card reader setup
  • Less inventory and employee management
  • No free online store
  • Fewer integrations than Square
Get SumUp Card Reader →

Side-by-Side Comparison

CategorySquareSumUpWinner
Transaction Fee (EU/UK)1.75% (UK)1.69%✔
SumUp
Free POS SoftwareYes — full POS with inventoryBasic✔
Square
Online StoreFree online store includedBasic online store✔
Square
Countries AvailableUS, UK, Canada, AU, Japan35+ countries✔
SumUp
Inventory ManagementFull inventory management freeBasic✔
Square
Employee ManagementFree employee/timesheet toolsNot included✔
Square
Setup SimplicityEasyVery simple — plug and go✔
SumUp
InvoicingFree invoicing includedBasic invoicing✔
Square

Which do you use?

Square
SumUp

Who Should Choose What?

Choose Square if:

You run a retail shop, cafe, or service business in the US, UK, Canada, or Australia and want a complete free business management suite with inventory, employees, invoicing, and an online store all in one place.

Choose SumUp if:

You are a freelancer, market trader, mobile business, or small shop in Europe who just needs simple card acceptance with the lowest possible transaction fee. SumUp is available in 35+ countries including many where Square does not operate.

Consider Stripe Terminal:

For online-first businesses adding in-person payments, Stripe Terminal unifies your online and in-person payments into one system with the full power of the Stripe API behind it.

Frequently Asked Questions

Is Square better than SumUp?
Square is better for businesses needing a complete free POS system with inventory, employees, and an online store. SumUp is better for European businesses and freelancers who need simple card acceptance in 35+ countries with a 1.69% transaction fee.
Which is cheaper, Square or SumUp?
SumUp charges 1.69% per transaction in Europe. Square charges 1.75% in the UK and 2.6% in the US. For European merchants, SumUp is slightly cheaper per transaction. Square Reader hardware costs £19 (UK) vs SumUp Air at £39.

Editor's Take

After testing dozens of tools in this category, Square and Sumup keep coming up as the top two for good reason. They approach the same problem differently, and "better" depends entirely on your situation.

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Last updated: . Pricing verified weekly.