Cheapest Card Machine for Small Business UK 2026

Small businesses in the UK face a simple but frustrating problem: card processing fees eat into already thin margins, yet most providers bundle in monthly contracts and hardware costs that make the real price hard to see. Finding the cheapest card machine means looking beyond the headline transaction rate and adding up every charge you will actually pay. This page cuts through that to show you the lowest-cost options available in June 2026.

Who Is This Page For

This page is for UK sole traders, micro-businesses and small limited companies that take card payments face to face and want to keep costs as low as possible. It is especially useful if your monthly card turnover is under £15,000, you have no long-term contract in place, and you want to avoid monthly subscription fees entirely. If you run a market stall, a mobile service, a small shop or a pop-up, the options below are built for you.

What Does a Small Business Need from a Card Machine?

A small business typically needs a card machine that is cheap to acquire, cheap to run and simple to set up without a dedicated IT team. Battery life matters if you move around during the day. Contactless speed matters if you serve queues. And the absence of a monthly fee matters most of all, because a £20-a-month fixed cost on a machine you use twice a week adds up to £240 a year before you process a single payment.

Settlement speed is the second critical factor. Most small businesses operate on tight cash flow, so knowing that funds will be in your account by 9am the next working day makes planning easier. Some providers settle in one working day, others take two. A 0.25% difference in transaction fees sounds small, but on £10,000 a month that is £25. Over a year that is £300. It pays to check both the rate and the settlement window before you commit.

Fee Comparison: Best Options for Small Business

Our Top Pick for Small Business

SumUp is the top pick for most UK small businesses looking for the cheapest card machine in 2026. The transaction fee of 1.69% per UK personal Visa or Mastercard is the lowest available from a major pay-as-you-go provider that does not require you to open a linked bank account. The SumUp Air reader costs £39 plus VAT and connects to your phone via Bluetooth. There is no monthly subscription and no cancellation fee, so you can stop using it at any point without penalty.

At £5,000 monthly card turnover, SumUp costs approximately £84.50 in transaction fees alone. Square at 1.75% would cost £87.50 for the same volume. That £36 annual saving is modest, but SumUp also pays out by the next working day for most UK bank accounts, which is useful for managing cash flow. The SumUp app handles basic sales reporting and VAT, which is enough for the majority of sole traders and small shops.

One honest weakness: SumUp's customer support has historically been slower than Zettle's, and its point-of-sale app has fewer inventory management features than Square. If you stock hundreds of products, Square may serve you better despite the marginally higher rate. Read the full SumUp review on Compare Card Fees for a complete breakdown of fees, hardware and contract terms.

Runner-Up Options

Square: Best Free Card Reader for Small Business

Square charges 1.75% per UK card transaction with no monthly fee and sends a free card reader to new merchants. The reader arrives in a few days and works via Bluetooth with the Square app on iOS or Android. Square's point-of-sale software is stronger than SumUp's for businesses with a product catalogue, offering free inventory tracking for up to unlimited items. Settlement is the next working day into most UK bank accounts. The main drawback is that Square reserves the right to hold funds if it flags unusual activity, which can be disruptive for small businesses with irregular but legitimate sales spikes. Read the full Square review on Compare Card Fees for settlement policy details and hardware pricing.

Zettle by PayPal: Best for PayPal Users and Market Traders

Zettle charges 1.75% per transaction with no monthly fee. New merchants pay £19 plus VAT for the first card reader, which is a solid deal given the reader retails at £79 plus VAT thereafter. Zettle settles funds the next working day for most accounts. Its integration with PayPal makes it a natural choice for businesses that already receive PayPal payments online, since both revenue streams appear in one dashboard. The honest drawback is that Zettle's app is less feature-rich than Square's for stock management, and PayPal's overall reputation for account holds means you should have a backup payment method for busy trading days. Read the full Zettle by PayPal review on Compare Card Fees before deciding.