The short answer
For a café the machine that wins is the one with the lowest cost on a £3 to £5 sale, which means any pence-per-transaction charge counts for as much as the percentage. Beyond that you want fast contactless at the counter, a tipping prompt if you take tips on card, and settlement the next day so the weekend's takings pay Monday's milk delivery.
Low card volume points to a pay-as-you-go reader with no monthly fee. Higher volume points to an individually quoted contract terminal, and the only way to tell which is lower for your café is to put a quote next to your current statement.
Why pence matter more than percent on a coffee
A flat percentage scales with the sale. A fixed pence charge does not, so on a small ticket it can double the real cost. The table works each published rate through a £3.50 sale. Rates were checked August 2026 and apply to standard UK consumer cards; premium, business and international cards cost more with every provider.
| Provider | Published rate | Fee on a £3.50 sale | Effective rate |
|---|---|---|---|
| SumUp (pay-as-you-go) | 1.69%, no monthly fee | 5.9p | 1.69% |
| SumUp Payments Plus | 0.99% domestic cards, £19/month | 3.5p plus the monthly fee | 0.99% plus £19/month |
| Square | 1.75% | 6.1p | 1.75% |
| Zettle | 1.75% | 6.1p | 1.75% |
| Revolut Reader | 0.8% + 2p, paid plan from £10/month | 4.8p plus the plan | 1.37% plus £10/month |
| Stripe Terminal | 1.4% + 10p (EEA cards) | 14.9p | 4.26% |
| Dojo | Quoted individually | Depends on the quote | Ask for every per-transaction charge in writing |
Revolut has discontinued its Reader in favour of the Lite Terminal (£129 + VAT) according to reviews checked August 2026; the rate is shown for comparison. The underlying interchange fee is capped at 0.2% on consumer debit and 0.3% on consumer credit, and everything above that is the provider's margin. More on the pence element: what is an authorisation fee.
Counter speed and the contactless limit
Nearly every café sale is a tap. The FCA confirmed the £100 single-transaction contactless limit and the £300 cumulative limit in March 2021, and £100 is still the typical figure even though banks have been allowed to set their own limits since March 2026. What slows a queue is not the limit but the terminal: a reader that takes a second to wake, or a phone-paired reader waiting for the app, adds up over two hundred morning customers.
For a fixed counter the Dojo Wired runs on mains power with Wi-Fi and Ethernet and has a physical keypad, so there is no battery to go flat mid-rush. For table service or a hatch, the Dojo Go has a 4G SIM as backup to the Wi-Fi and a built-in printer. Square's Terminal (£149 + VAT) and SumUp's Terminal (£135 ex VAT) both print receipts too. Which is right depends on whether the terminal ever leaves the counter.
See Dojo Wired, Dojo Go and the contactless limit explained.
Tips, receipts and settlement
Not every terminal prompts for a tip. Some show a gratuity prompt before the tap, some only through a paired till, and reporting of tips for staff distribution varies. Ask the provider to show you the prompt and the report, not just tell you it exists.
Receipts are mostly digital now, but a printer still earns its place for business customers claiming expenses. Both Dojo Go and Dojo Wired print; the Dojo Pocket does not and sends receipts through the app instead.
Settlement timing decides whether Saturday's takings are in the account for Monday's suppliers. Dojo's terms commit to transfer by the end of the business day after the transaction is processed, with business days excluding weekends and bank holidays, and independent reviews report next-day settlement including weekends on qualifying accounts. SumUp states 7am next-day payouts including weekends into its own business account. Get the timing for your account in writing.
When a contract terminal is not the right choice
- Card takings are small. At a few hundred pounds a month a flat 1.69% to 1.75% costs a few pounds, and no monthly fee beats a lower percentage.
- You trade seasonally. Dojo's minimum term is set in the application documents and ending the agreement takes at least one month's written notice, so a summer-only kiosk is better served by a reader you own outright.
- You are not sure yet. Dojo states there is no early account closure fee if you tell it you want to end within the first 30 days, but other fees are still billed. A £19 to £79 reader is a cheaper way to find out how much card trade you actually take.
- You already have an EPOS you like. Check it integrates before changing terminal; a fast machine that does not talk to the till creates a second queue at the counter.
Common questions
What is the best card machine for a small café?
The one with the lowest cost per transaction on your actual average sale, not the lowest headline percentage. On a £3.50 coffee a flat 1.69% costs about 6p, while a rate of 1.4% plus 10p costs about 15p. For low card volumes a pay-as-you-go reader with no monthly fee usually wins; as volume grows, an individually quoted contract terminal can work out lower per cup. Put a quote against your current statement and check the pence, not the percentage.
What is the contactless limit for a café?
The single-transaction limit of £100 was confirmed by the FCA in March 2021 and is still the typical limit. Since March 2026 banks with strong fraud controls have been allowed to set their own limits, but most are expected to keep £100. Almost every café sale sits well under it, so contactless speed matters more than chip-and-PIN speed.
Can customers leave a tip on the card machine?
Many terminals can show a gratuity prompt before the customer taps, but support varies by provider and by the till system the terminal is paired with. Ask the provider to demonstrate the prompt and show how tips appear in reporting before signing, because the difference between tips on the screen and tips in a jar is real money for staff.
How quickly does the money reach my account?
Dojo’s terms commit to transferring takings by the end of the business day after the transaction is processed, and independent reviews report next-day settlement including weekends on qualifying accounts. SumUp states payouts arrive at 7am the next day, including weekends and bank holidays, into its business account. Confirm the timing for your own account rather than relying on a marketing phrase.
Can I get a café card machine as a sole trader?
Yes. Dojo’s terms accept a UK resident over 18 with a legitimate UK business, subject to identity checks and a credit assessment. SumUp, Square and Zettle also sign up sole traders. Card-terminal hire itself is not an FCA-regulated activity; the acquiring behind it is, which is why the provider runs those checks.
Put a quote next to your statement
Tell us your average sale and monthly card takings. We will work out the cost per transaction against what you pay now and say plainly if a pay-as-you-go reader is the better buy.
CapExpand is an authorised Dojo partner and is paid by Dojo when a business signs up through us. That does not change the price you pay.
Related: card machines for restaurants, fee comparison and calculator. If the café is a limited company or LLP and you are looking at funding for a refit or new equipment, we can introduce you to lenders: see café funding.
Sources
- SumUp pricing and payouts and SumUp card readers - rates, hardware and payout timing checked August 2026
- Square UK pricing and Square Terminal - checked August 2026
- Zettle UK pricing - checked August 2026
- Stripe UK pricing - Terminal rates checked August 2026
- Business Expert Revolut Reader review - Revolut rate, plan and hardware, checked August 2026
- FCA: contactless thresholds, March 2021 and FCA: future contactless limits, December 2025 - checked August 2026
- Interchange Fee Regulation - 0.2% debit and 0.3% credit caps
- Dojo terms and conditions v1.6 - eligibility, settlement, minimum term and notice, checked August 2026
- Mobile Transaction Dojo review and Expert Market Dojo review - hardware and weekend settlement, checked August 2026
- FCA Handbook PERG 15.3 - acquiring is regulated; provision of terminals alone is not, checked August 2026