UK whole-of-market comparison

Best card machine for low monthly volume UK 2026

Compare the UK shortlist below, then get matched quotes from the acquirers most likely to approve you and beat your current pricing.

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For UK merchants doing under £5,000 monthly card volume. Sole traders, market stalls, weekend market sellers, occasional traders, side-businesses, just-launched startups. The right card machine is no-monthly-fee, no-contract, pay-as-you-go, low hardware cost. Anything else over-charges you.

Based on MerchantHQ terminal reviews and our ranking methodology. Last reviewed 2026-05-11.

The ranking

1. SumUp Solo

4.2 / 5

Best overall low-volume

Portable terminal with built-in receipt printer (Solo Lite is no-printer) · 1.69% per transaction · No contract

SumUp Solo at £99 to £149 with 1.69% per transaction wins on low-volume because there is no monthly fee. At £2,000 monthly volume the blended cost is £34/month total. Compare to a Worldpay contract at 0.6% + £20 monthly fee, which would cost £32/month at the same volume but lock you into 36 months.

2. Zettle Reader 2

4.0 / 5

Best entry-level low-volume

Compact card reader (pairs with phone or tablet) · 1.75% per transaction · No contract

Zettle Reader 2 at £29 to £69 hardware with 1.75% per transaction. Cheapest UK upfront cost. No monthly fee, no contract. Best fit for occasional traders, weekend markets, just-launched testers who do not know their volume yet.

3. Tap to Pay on iPhone (no terminal)

4.2 / 5

Best zero-hardware low-volume

iPhone XS or later running iOS 16.4+, no separate terminal · Matches your chosen acquirer (about 1.69% to 1.75%) · No fixed term

Tap to Pay on iPhone removes the hardware cost entirely. Zero upfront, no monthly fee, pick a no-contract acquirer. Best fit for low-volume mobile traders who already own a recent iPhone.

4. Square Terminal

4.1 / 5

Best all-in-one low-volume

All-in-one countertop terminal with receipt printer · 1.75% per transaction (UK) · No contract

Square Terminal at £149 with 1.75% per transaction. No monthly fee, built-in printer, full POS. Worth the higher hardware cost if you want one device that runs the whole counter.

Quick comparison

Headline rate, hardware cost, contract and form factor at a glance.

Rank	Terminal	Rate	Hardware	Contract
#1	SumUp Solo	1.69% per transaction	£99 to £149 hardware	No contract
#2	Zettle Reader 2	1.75% per transaction	£29 to £69	No contract
#3	Tap to Pay on iPhone (no terminal)	Matches your chosen acquirer (about 1.69% to 1.75%)	£0 hardware (you already have the iPhone)	No fixed term
#4	Square Terminal	1.75% per transaction (UK)	£149 to £199	No contract

FAQs

What is the best card machine for a low-volume UK business?

SumUp Solo at £99 to £149 with 1.69% per transaction and no monthly fee is the strongest low-volume pick in 2026. For occasional or seasonal traders below £1,000 monthly volume, Zettle Reader 2 at £29 to £69 is cheaper upfront. Tap to Pay on iPhone removes the hardware cost entirely if you own a compatible iPhone.

Should a low-volume merchant pay a monthly fee for a card machine?

No. At sub-£5,000 monthly card volume, the monthly fee almost always over-charges. A £20/month fee plus a "good" 0.5% rate costs more in total than 1.69% on no monthly fee. Pay-as-you-go pricing wins until volume justifies the fixed cost.

Can I move to a contract acquirer if my volume grows?

Yes. MerchantHQ switches you to a contract acquirer (Dojo, Worldpay, Tyl) once your monthly card volume crosses about £10,000 to £15,000. We manage the cutover with zero trading downtime via /switching-help/. The right card machine changes with volume.

Are no-monthly-fee card machines slower or worse?

No. SumUp Solo, Square Terminal, Zettle Reader 2 and Tap to Pay on iPhone all run on the same Visa and Mastercard rails as the contract products. Speed of authorisation is identical. The trade-off is per-transaction rate, not technical reliability.

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Take any of these. We handle support, rate reviews and disputes.

Named UK account team for the life of the agreement. Acquirer pays our commission on completed introductions, so it costs you nothing on top.

24/7 dedicated support
Direct line to a named UK account manager, not a generic acquirer helpline. When your terminal goes down on a Saturday night you call us.
Quarterly rate reviews
As your card volume grows your rate should drop. We renegotiate against the 40+ UK acquirer panel every quarter, so you never overpay because you forgot to ask.
Chargeback and dispute help
UK chargeback fees vary by acquirer and are set out in your merchant agreement, and many disputes are friendly fraud that can be defended with the right evidence. We draft the response and escalate where the acquirer drags its feet.
Switching support when you outgrow
If a better acquirer fit emerges as you grow we manage the cutover. No exit-fee surprises, no dual-running gap. Same account team across acquirers.

How we work, end to end →

How we rank

Rankings are built by desk research from each provider's published rates, upfront costs, contract lengths and settlement terms, held in a dated record per terminal (last-reviewed date shown on this page) and re-checked when published pricing changes. We do not hands-on test every device; specs are taken from provider documentation and cited. No provider pays for inclusion or position. MerchantHQ is an introducer: acquirers, including some brands ranked here, pay us commission on completed introductions. Commission never affects a ranking. See our methodology and how we are funded.

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Reviewed by Oliver Mackman, Director, Best Business Loans Ltd. Last reviewed: 2026-05-11.