Our rating(4/5)
Square card reader works with a free POS app and has competitive transaction fees. With no PIN pad, is it ideal for UK merchants?
Square (also called Squareup) offers the first keypad-less card reader in the UK, which works with your smartphone or tablet. For just a flat 1.75% rate per transaction, Square gives you more tools and features than any other free payment apps.


  • Competitive, flat transaction rate on all cards
  • Amazing free app features
  • Invoicing and virtual terminal included


  • PIN entry on mobile screen could be a hassle
  • Some reports on unresponsive customer support
  • Only accepts the most popular card brands

Best card reader offer

Get started with Square for just £19. No monthly fees or contract to worry about.

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  • Square Reader price
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Square was one of the first to offer a card reader enabling smartphones to accept payments on the go. In 2017, it launched Square Reader in the UK.

Like other mobile card readers, Square Reader connects with a phone or tablet via Bluetooth and processes payments through an accompanying app. As for compatibility, it works with most iOS and Android tablets and phones used today.

Accepted cards

VisaMastercardV PayVisa ElectronMaestroAmerican ExpressApple PayGoogle PaySamsung PayContactless

Because the terminal hasn’t got a keypad, PINs are entered on the mobile device touchscreen. Contactless payments are processed seamlessly by just holding up your card or phone near the white, square-shaped terminal.

The mobile app works as a complete POS system with advanced functions helping you run any type of business from just your tablet or phone.

The card reader accepts the most popular debit and credit cards including Visa, Visa Electron, V Pay, Mastercard, Maestro and American Express. Furthermore, it accepts payments through Apple Pay, Google Pay and Samsung Pay.

Charges are simple and transparent

Square card reader fees is just a fixed-rate 1.75% per chip and PIN and contactless payment regardless of card brand or whether it is premium or from abroad. Cash payments are free to process through the app. They don’t charge you any additional or monthly fees on top of that.

Card paymentsFee
Chip, contactless, swipe1.75%
Key-in, invoice, ecommerce, virtual terminal2.5%
Instant Deposits1% in addition to card fee
Chip, contactless, swipe1.75%
Key-in, invoice, ecommerce, virtual terminal2.5%
Instant Deposits1% in addition to card fee

Payments where the customer is not present are charged a higher rate, i.e. every keyed-in, online and invoice payment costs 2.5% of the transaction amount. The keyed rate applies to both when the customer is and is not present.

With Square, you don’t commit to a contract period, neither do you need to sell every month or have certain sales volumes to qualify for the card rates.

Square does not charge anything for refunds or chargebacks, the latter being dealt with for free by a dedicated support team for payment disputes.

Payments are deposited in your bank account as fast as the next working day – by default automatically, but you can also set it to manual deposits if that simplifies bookkeeping.

Square also offers Instant Deposits, a setting that enables you to receive transactions within 20 minutes to 2 hours – if your bank is a Direct Participant of Faster Payments. This costs an extra 1% of the transaction amount, i.e. a total of 2.75% for card reader payments and 3.5% for keyed-in payments. Note that new merchants may not have access to this feature before they have a sufficient sales history in the Square account.

Square Reader£19 + VAT
Magstripe ReaderFree (comes with Square Reader)
Dock for Square Reader£19 + VAT
Square Stand with Square Reader & Dock£109 + VAT
Square Reader£19 + VAT
Magstripe ReaderFree (comes with Square Reader)
Dock for Square Reader£19 + VAT
Square Stand with Square Reader & Dock£109 + VAT

Square Reader cost £19 + VAT, and the optional Dock for charging and keeping the card reader in place costs £19 + VAT. The Square Stand, including Square Reader and Dock, is £109 + VAT.

As for the Point of Sale app, features are free except for additional employee permissions costing £3 per month for each advanced employee account. Any integrated tools from other providers, e.g. for ecommerce and bookkeeping, are paid for separately through those other platforms.

Square’s new card machine with POS screen: Square Terminal reviewed

Taking a payment

To start a sale, you can either enter the total sales amount or pick products or services from your product library (if you’ve added items there). Tap “charge” and the customer can use their card to pay, or even add a tip before payment. After each transaction, you can email or text the receipt, or print it from a connected Bluetooth printer.

When you buy the Square Reader, you also get a complimentary small swipe reader for magnetic stripe cards. This has an audio jack to plug into your phone. iPhone 7 and newer models require a small adaptor cord to connect the audio jack with the micro USB socket at the bottom of the phone. We found this a bit impractical.

Square Reader on a counter

The payment flow for contactless cards is very smooth – just tap and you’re done. Photo: Square

If the magstripe reader is plugged directly into a phone, you can fairly easily swipe a card through the slot. Swiping from newer iPhones with an adaptor-connected magstripe reader requires holding both the phone and card reader while attempting to swipe the card through as quickly and straight as Square requires for a successful payment.

However, it should be noted that the swipe reader does not work with chip cards, only overseas cards without a chip, so this should not be a major issue unless you have lots of overseas customers using swipe.

Are concerns around PIN on glass justified?

Where Square differs from other card readers in the UK is that customers need to enter their PIN on the touchscreen of the phone or tablet rather than a separate keypad for PINs – this is referred to as “PIN on glass”. Also the Square card reader has no display, so the charge amount is displayed only in the app.

Some people have been concerned that inputting your PIN using software on a multi-use consumer device is not safe. Protecting the PIN from visual skimming is another issue: if the tablet is on a stand of a certain height, PIN entry can be more difficult to hide compared to when entered on a countertop card machine.

PIN on glass has been officially accepted by the PCI Security Standards Council, and we do not see cause for concern for honest merchants. Still, some customers might not feel comfortable giving their PIN this way. If that worries you, you may want to consider other card reader options also reviewed on this site.

Square Stand with customer

Square Stand swivels the iPad to face the customer when a PIN or swipe is required (there’s a magstripe slot at the front).

Square Reader vs. Square Terminal

If a POS app on a mobile device is not for you, the latest card machine, Square Terminal, works independently. This is a touchscreen smart terminal with integrated POS features (similar to Square Point of Sale app) navigated directly on the card machine screen. It accepts chip and PIN, contactless and swipe cards, but the PIN codes are entered on a touchscreen PIN pad, similar to a traditional card  machine.

Square ReaderSquare Terminal
Square ReaderSquare Terminal
Price£19 + VAT£199 + VAT
Works without a smartphone/tablet
Built-in receipt printer
NetworkBluetooth to mobile device with 3G, 4G or WiFiWiFi, Ethernet only with Hub
Dimensions66 x 66 x 10 mm142.2 x 86.4 x 63.5 mm
Weight56 g417 g
Square ReaderSquare Terminal
£19 + VAT£199 + VAT
Works without a smartphone/tablet
Built-in receipt printer
Bluetooth to mobile device with 3G, 4G or WiFiWiFi, Ethernet only with Hub
66 x 66 x 10 mm142.2 x 86.4 x 63.5 mm
56 g417 g

Given the large touchscreen and integrated software, Square Terminal is much bigger than Square Reader, like a conventional card machine. It also has a built-in receipt printer so you don’t need a separate one.

While Square Reader works with 3G, 4G and WiFi through the connected mobile phone or tablet, Square Terminal only works with a secure WiFi connection or Ethernet cable (the latter only in conjunction with Hub for Square Terminal, costing extra). This makes Reader more suitable for on-the-go payments and Terminal best for a fixed location or area with a secure WiFi setup.

App features

The free Square Reader app – called ‘Point of Sale’ – is one of Square’s biggest draws – it has all the most important things needed to manage sales from any compatible Android or Apple device.

Apart from accepting cards through the contactless/chip Square Reader and the magnetic stripe reader, you can manually enter card details, send invoices and accept cash. You can apply discounts (named and preset by you, e.g. Student Discount at 10%), add tips and split the tender so customers can pay some of the total with e.g. Amex and the rest with cash.

The product inventory is great for tablets especially, where you can view a rich table of products, the layout of which you customise. Each product can have a picture, description, types (e.g. red, black, pack of 2, pack of 5), different prices for each type, and stock levels.

Square Point of Sale app

Add products, apply discounts, view stock levels, and distinguish between product types. Photo: Square

To get the most out of Square’s tools, we suggest adding all the things you sell to the library before using the app. This enables you to track their popularity and differentiate between items when processing a refund. And of course, it makes it easier at checkout to just tap the product rather than manually entering each item or calculating a sales total, which are both possible as well.

Businesses with teams of staff can add each employee as a user with limited permissions in the app. Granting an account to each user also enables time sheets so you can track hours and overtime worked.

Transactions over the phone, mail order or online are also possible through the complimentary Square Virtual Terminal. From any desktop browser, you can log in to the Square account and go to the Virtual Terminal section where you key in a customer’s card and transaction details.

Hardware and accessories

You can wirelessly connect Square Reader with compatible receipt printers, kitchen printers (for restaurants and similar), cash drawers and barcode scanners. Especially retail and food-and-drink businesses may find this useful to manage cash holdings and food orders effectively.

Square sells accessories created to make the till look and feel more professional. The Dock for Square Reader can be attached to a countertop and keeps the terminal charged all day. Their iPhone cases enable you to attach a Square Reader to the back of your iPhone to give the impression of an all-in-one card machine. Square Stand for iPad enables you to swivel the tablet screen to face the customer who can then enter their PIN. In addition, the Square Stand has a swipe slot for magnetic stripe cards, used for American cards that still swipe.

Square card reader

It is possible to attach Square Reader to an iPhone via this special case. Photo: Square

Quite a few receipt printers work with the Square system, but some only work if the Square Stand is used too. Countertop printers that do not need Square Stand include Star Micronics TSP143 and TSP654 models and Epson TM-T88V, amongst others. If you want a portable receipt printer, the Star Micronics SM-S210i and SM-T300i Bluetooth receipt printers will work, among others. The compatible Star Micronics SP742ML kitchen printer can withstand heat, ideal for print order tickets in hot restaurant kitchens.

Reports and accounting

An important function of any POS software is the reporting. With Square, you can check details of sales any time from the app or Square account in your internet browser. At the end of each day, view or export a daily report to Excel and see how sales compare with the same date last year.

Cloud-based point of sale solutions such as this are convenient because you can access and view the data on any device with an internet browser. In old-fashioned till systems, sales data were stored on local computers, deeming it impossible to access the data from anywhere else than that computer.

Square UK accounting dashboard

Reports are easy to understand and can be customised. Photo: Square

With all sales data in the cloud, you can log in to the Square account in any supported internet browser and even export the data to Excel for local storage, reporting and accounting purposes. At the same time, your account adds all sales activities in real time, so you can always check in on how you’re doing.

For more complex accounting features, you can export data to Xero or other supported accounting software.

Planning to sell online too? Integrate with Square Online Store

Who is it best for?

Square aims to suit every business type. Having tested the POS app, we can verify it’s especially useful in the retail and hospitality sectors, food-an-drink in particular, due to its comprehensive product library, checkout functions, tipping, analytics and staff management features.

Growing businesses can switch to a more advanced POS system (Vend, TouchBistro or Lavu) and integrate with many partner apps, giving you room for growth. Those selling at multiple locations can also benefit from this simple system that yet is advanced enough to distinguish sales in different locations.

As is normal for payment companies, Square has a list of prohibited businesses too. Some of these industries include pharmaceuticals, adult products and services, certain marketing services, certain financial services, and illegal or otherwise questionable products and services.

Square cafe counter

Square has been particularly popular with cafés and eateries. Photo: Square

Customer support, reviews and complaints

Square is available to phone or email between 9am and 5pm Monday to Friday. There is no weekend or evening support, which is fine if the system works for you, but not so good if you prefer support at night in a bar, for example.

Despite the promising features and sleek looks, Square has received a significant amount of complaints in its other markets and also some in the UK. The common complaints are around sudden 90-day account freezes,  subsequent holding of money accepted through the card reader, account verification issues, and poor telephone support. Square has to comply with security requirements (esp. with PCI’s payment software standard) and want to keep customers safe, but it’s not nice when you’re told they’re “required” to hold your hard-earned money for 90 days for no clear reason.

As regards to their customer support, customers have reported they can’t get through to Square on the phone or haven’t had proper help. Generally, customer reviews are positive, though.

Getting started

Before purchasing the terminal, you need to sign up for a Square Reader account and register your bank account. It typically takes four days to have your bank account verified, but you can still take payments before verification if you need to do that. At the end of the sign-up steps, you can order the card reader.

We used a personal bank account with a history of receiving sole trader income, and this was verified after four days. To be accepted, Square requires that the bank account allows for both deposits and withdrawals to support their refund and chargeback system. Online-only accounts such as PayPal are not supported, nor are prepaid card accounts. Furthermore, your bank account must operate in British Pounds.

Square Reader unpacking

The card reader arrived two days after ordering it online. Photo: Mobile Transaction

Ordering the Square Reader went smoothly, and postage was free. We received it two days after purchase via DPD. Prior to delivery, we received text notifications stating when it’ll arrive, to pick a specific time (from a selection of hours) and giving the option to request leaving it at the neighbour’s if we were not going to be in. The parcel was wrapped up well – all in all a positive experience.

When the Square account is set up and connected with your bank account, download the Square Point of Sale app on your smartphone or tablet and log in to the app. Connect the card reader with your mobile device via Bluetooth, and you’re ready to take your first contactless and chip payments.

Our verdict

Having tried and tested Square Reader, we can conclude that:

  • It works seamlessly with contactless and chip cards and looks great on a counter.
  • The free app is superb. It has features for any type of business and can integrate with lots of partner apps – ideal for growing businesses.
  • The app features are especially suited for hospitality and small shops.
  • Customer support could be more accessible.

Out of all card readers in the UK, Square Reader is one of our top three choices alongside iZettle Reader and SumUp Air.

Name of Reviewed Item: Square Reader UK Rating Value: 4 Image: https://www.mobiletransaction.org/wp-content/uploads/2019/03/square-reader-review.jpg Review Author:Review Date: