Best Card Machines For Events & Festivals: 2026 UK

Events are hard on card machines. Thousands of phones fighting over one mobile mast, a field with no WiFi, a ten hour shift with nowhere to charge, and a queue that won't wait while your reader reconnects. A setup that's fine in a shop can fall apart at a festival.

This guide is about what actually matters when you're trading at festivals, fairs, shows, pop ups and one-off events in the UK. Prices and features were checked October 2026.

Connectivity: the number one problem

At a big event, mobile data can slow to a crawl once the crowds arrive. You've got three ways to deal with it.

Built-in SIM

A reader with its own SIM doesn't depend on your phone. Some pick the strongest available network, which helps when one network is overloaded. myPOS includes a 4G SIM that roams across networks at no monthly cost. SumUp Solo also has a built-in SIM.

WiFi from the organiser

Some events offer traders WiFi, sometimes for a fee. It can be better than mobile data, but it can also fail when everyone joins. Treat it as a bonus, not your plan.

Offline mode

Offline mode lets a reader store card payments and send them when the connection comes back. It's the best insurance at a festival, but there are limits:

The catch is risk. If a stored payment is declined when it finally goes through, you lose the money. Most providers put that risk on you. Use offline mode for small amounts and only when you have to.

Battery life

Plan for a full trading day plus setup. Things to check:

• Rated battery life in transactions or hours
• Whether you can charge from a power bank via USB-C
• Screen brightness, which drains battery fast in sunshine

SumUp says its Terminal manages about 250 transactions per charge and the Solo about 300. myPOS says the Ultra lasts for 1,500 plus transactions on one charge. Take a power bank either way.

The best card machines for events

SumUp Solo

£79, 1.69% per transaction, with a built-in SIM and WiFi. Works standalone without a phone. Offline mode for eligible merchants. It's light, quick and cheap to own, which makes it a favourite for traders who do a handful of events a year.

Pros: no contract, standalone, cheap Cons: offline mode not available to everyone

Square Terminal

£149, 1.75% per transaction, with a built-in receipt printer and offline payments on supported hardware. The Square POS app handles item buttons, so you can serve fast.

Pros: offline mode, good POS, printer Cons: relies on WiFi rather than its own SIM, so you may need a phone hotspot

myPOS Ultra

£179, 1.10% plus 7p on domestic consumer cards for businesses under £10,000 a month. It has a printer, 4G and a big battery. Takings arrive in your myPOS account instantly, handy if you need to pay for stock the same day.

Pros: long battery, free 4G, instant payouts Cons: 7p fixed fee on small sales, higher rates on Amex and overseas cards

PAX A920 Pro

This Android terminal is offered by several contract providers. Tyl by NatWest rents it at £19.99 a month plus VAT, with rates of 1.39% plus 5p on personal cards for businesses up to £50,000 a year. Our PAX A920 Pro review covers it in detail.

Pros: printer, 4G, full Android apps Cons: monthly rental even in months with no events

Tide Card Reader Plus

£69 on pay as you go, 1.5% plus 5p on domestic consumer debit cards. It has a 5.5 inch screen. Good if you already bank with Tide. Tide says its fees change on 1 December 2026.

Pros: payments go straight into your Tide account Cons: battery rated for one day, consumer debit rate only

Fees at events

Event sales are often small and fast: drinks, food, merch. Here's what each costs on a £6 sale and a £30 sale.

For drinks and food, a flat rate with no fixed fee wins. For merch and crafts, lower percentages pull ahead.

Rental options

If you only trade at one or two events a year, renting a terminal for the event might make sense. Some providers and event specialists rent terminals by the day or week, often with connectivity included. Compare the total rental plus fees with simply buying a £79 reader. For most small traders, buying wins.

For bigger events with lots of tills, organisers sometimes use a single provider across all traders. Ask the organiser before you book.

Event day checklist

• Charge everything the night before
• Bring a power bank and cables
• Test a payment as soon as you arrive
• Turn on offline mode if your provider allows it
• Have Tap to Pay set up on your phone as a backup
• Take a small cash float for when everything fails
• Display a clear "cards accepted" sign

Pros of going card-only at events

• Faster queues with contactless
• No cash to guard or bank
• Easy sales tracking

Cons

• Totally dependent on signal and battery
• Lost sales if everything fails and you have no float

Ask the organiser first

Before the day, check whether the organiser has rules on payments, provides WiFi or power, or takes a share of card sales. Some festivals require cashless trading through a set provider.

Who should pick what

• Occasional events: SumUp Solo, cheap to own and no monthly cost
• Food and drink with item buttons: Square Terminal with offline mode
• Regular festival trader with bigger sales: myPOS Ultra
• Weekly market plus events: see our market stall card reader guide

FAQs

What's the best card machine for a festival?

One with a built-in SIM, a long battery and an offline mode. SumUp Solo and Square Terminal are both strong choices. myPOS is good for longer days.

Do card machines work without signal?

Only in offline mode, and only up to set limits. Square and SumUp both offer it with conditions. Our guide to card machines without WiFi explains more.

What's the risk of taking payments offline?

If a stored payment is declined later, you usually lose that sale. Keep offline payments small.

Should I rent or buy a card machine for one event?

For most small traders, buying a cheap reader works out cheaper than renting, even for one event.

How many transactions will a reader handle on one charge?

It varies. SumUp quotes about 300 for the Solo and myPOS over 1,500 for the Ultra. Take a power bank anyway.