How to choose a card terminal in 2026
Choosing a UK card terminal in 2026 is dominated by one number: your expected monthly card volume. Below £10k, no-contract no-monthly-fee products win. Above £15k, contract products with blended or interchange-plus pricing win. The hardware question is downstream of that. This guide walks the six questions you need to answer before you commit to anything.
Question 1: What is your expected monthly card volume?
This is the single most important number. A new sole trader expecting £3k a month has no business signing a 12-month contract. A busy gastropub doing £40k a month is leaving money on the table by paying SumUp's 1.69% flat. Pull your last 3 to 6 months of card receipts (or estimate honestly for a new business) and treat that as the baseline. The rate model is then comparable: 1.69% × £3,000 × 12 = £610 a year, vs Dojo's 1.5% × £3,000 × 12 = £540 a year (a £70 saving that does not justify a 12-month contract). At £40,000 monthly the same maths becomes £8,112 vs £7,200, an £912 saving that does justify the contract.
Question 2: Do you trade weekends, peaks, or seasonally?
Hospitality and event-trade venues that take most of their card flow on Friday-Sunday materially benefit from same-next-day weekend settlement. Dojo Go is the only mainstream UK terminal that offers it. Most others settle next business day, which means Sunday's takings land on Tuesday. For a £20k weekend turnover, that is real working capital. Seasonal traders (Christmas markets, summer festivals) need no-contract products because they will not trade for 6 to 9 months of the year. Pop-up retailers face the same constraint.
Question 3: Where will you actually trade?
Fixed shop with reliable WiFi: any standard terminal works. Market hall with patchy WiFi: 4G hardware (SumUp Solo, Stripe Reader S700, Square Terminal). Outdoor festival or rural pitch: 4G hardware with all-day battery. Mobile trader visiting customers: Tap to Pay on iPhone (zero hardware) or SumUp Solo. Multi-network connectivity (4G + WiFi + Bluetooth) is worth paying for if you trade anywhere outside a single fixed location with reliable internet.
Question 4: Do you need POS, inventory, or e-commerce integration?
A card reader is one component. The wider stack matters. Square Terminal integrates with Square Online, Square Appointments, and Square Inventory; if you want a unified single-vendor stack, that is the strongest answer below £20k monthly. Stripe Reader S700 integrates with Stripe-built websites and Shopify. Dojo integrates with Lightspeed, Goodtill, Zonal, ICRTouch and others. SumUp has a basic POS app but weaker e-commerce integration. Confirm the exact POS and e-commerce integration before purchasing the terminal because some are software-only.
Question 5: Are you in a high-risk vertical?
Mainstream UK acquirers (SumUp, Square, Dojo, Worldpay, Tyl) decline or terminate merchants in restricted categories: vape and CBD, adult, gambling, debt-collection, payday lending, MLM, ticketing-resale. If you are in one of these, ignore the no-contract no-monthly-fee products and route directly to high-risk specialists (Trust Payments, Universe Payments, Acquired.com). Their pricing is higher but their underwriting accepts your category. See our /high-risk/ section for the full vertical map.
Question 6: How much hardware integration do you actually need?
Three tiers. Tier 1: card reader only. Tap to Pay on iPhone, Zettle Reader 2, Tide Card Reader. Cheapest, simplest, no till. Tier 2: standalone terminal. SumUp Solo, Square Terminal, Dojo Go, Stripe Reader S700. Built-in receipt printer (most), runs without a paired phone. Tier 3: integrated POS. PAX A920 + acquirer software, Square Stand + tablet, Stripe + ePOS Now. Pick the lowest tier that covers your needs; over-buying is the most common mistake.
How to actually run the comparison
Get three quotes in writing. One from a no-contract product (SumUp, Square, Tide). One from a contract product (Dojo, Tyl). One from your bank if it offers acquiring (NatWest Tyl, Barclaycard, Lloyds Cardnet). Build a one-page spreadsheet: monthly volume × rate, plus monthly platform fees over 12 months, plus hardware. Subtract any settlement-speed advantage worth quantifying. The cheapest headline rate with poor settlement timing can lose to a slightly higher rate with same-day settlement during a peak trading week. Always confirm the rate is in writing on the contract, not just in sales conversation.
FAQs
What is the most important factor in choosing a UK card terminal?
Expected monthly card volume. Below £10k, no-contract products (SumUp, Square, Zettle) win on cost and flexibility. Above £15k, contract products (Dojo, Tyl, Stripe, Adyen) win on rate. Get three written quotes and compare on total 12-month cost including monthly fees and hardware.
Should I always pick the cheapest headline rate?
No. Settlement timing, contract length, monthly fees, hardware cost, and customer-service quality all matter. A 1.5% rate with next-Tuesday settlement and a £25 monthly fee can lose to a 1.69% rate with same-day-weekend settlement and no monthly fee, depending on your trading pattern.
How long should I sign a card terminal contract for?
Twelve months at most for a first contract. Above £30k monthly volume, 18 to 36 months can be negotiated for a better rate, but only with explicit early-termination terms. Avoid 36-month rentals from ISO brokers unless the rate model genuinely beats no-contract alternatives.
Do I need a contract or is no-contract fine?
For sub-£15k monthly volume, no-contract is almost always the right answer. Above £15k, run the rate maths against the contract length on offer. Contracts also lock in settlement timing and customer service, which matter at higher volumes; the contract is not just a rate question.
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Open quote form →Reviewed by Oliver Mackman, Director. Last reviewed: 2026-05-09.