Do I Need a Merchant Account in the UK?
No, not as a separate application, if you use an all-in-one provider. SumUp (1.69% flat), Square (1.75% flat) and Zettle (1.75% flat) bundle the acquiring into their service, so you sign up and start taking cards without ever applying for a merchant account yourself.
Traditional acquirers (Worldpay, Barclaycard, Lloyds Cardnet) do set up a dedicated merchant account with its own merchant ID (MID) as part of onboarding. You never apply for a merchant account on its own; it comes with whichever route you choose.
Rates checked: August 2026
What a merchant account actually is
A merchant account is a holding account where your card takings settle before being paid out to your business bank account. It is identified by a merchant ID (MID), which is how the card schemes know who the money belongs to. Every card payment in the UK passes through a merchant account somewhere. The question is whether it is yours or your provider's.
All-in-one providers (also called payment facilitators or aggregators) hold one master merchant account and process thousands of businesses underneath it. That is why SumUp, Square and Zettle can approve you in minutes: there is no individual underwriting of a dedicated account, and the trade-off is a flat fee on every transaction.
Traditional acquirers open a dedicated merchant account in your business name. That involves an application and underwriting, but it is also what unlocks individually negotiated rates. See our full UK card machine rates table for how the two pricing models compare.
All-in-one provider vs dedicated merchant account
| All-in-one (SumUp, Square, Zettle) | Dedicated merchant account (Worldpay, Barclaycard, Lloyds Cardnet) | |
|---|---|---|
| Merchant account | Provider's: you sit under their master account | Yours: dedicated account with your own merchant ID |
| Transaction fee | Flat: SumUp 1.69%, Square 1.75%, Zettle 1.75% | Bespoke, quoted per business after underwriting |
| Monthly fee | £0 | Typically £15-£50 (Worldpay), £20-£60 (Barclaycard), £20-£50 (Lloyds Cardnet) |
| Setup fee | £0 (you buy the reader outright) | £0-£200 depending on acquirer |
| Application & underwriting | Minimal: sign up online, usually same day | Full application; approval typically 24-48 hours |
| Contract | None: pay as you go | Often 12-36 months (Dojo offers 12-month or rolling) |
Figures are providers' published or typical advertised pricing, checked August 2026. Bespoke rates are quoted per business; always confirm with a current quote.
Who needs which?
Stick with all-in-one (no separate merchant account) if…
- Your card takings are under roughly £4,000-£5,000 a month
- You are a new business with no trading history (there is no underwriting barrier)
- You want no monthly fee and no contract
- You value speed: sign up today, take payments when the reader arrives
Get a dedicated merchant account if…
- You take more than roughly £4,000-£5,000 a month by card: negotiated rates plus a monthly fee usually beat a 1.69%-1.75% flat rate at that point
- You want rates priced to your actual turnover, average transaction value and card mix
- You need acquirer-grade extras: named support, EPOS integration, multi-site reporting
Modern acquirers blur the line. Dojo, for example, sets up your merchant account with bespoke pricing, typically 1.2% to 1.9% depending on card turnover (we have seen quotes as low as 0.29% for high-turnover businesses), with terminal rental from £20/month and £0 setup fees.
What it means for cost
The merchant-account question is really a pricing question. On £3,000 a month of card takings, SumUp's 1.69% flat rate costs £3,000 × 1.69% = £50.70 a month with nothing else to pay, which is hard for any acquirer to beat once a monthly fee is added. On £10,000 a month, a 1.75% flat rate costs £10,000 × 1.75% = £175 a month, and a dedicated account with a negotiated rate will usually undercut that even after the monthly fee.
We break the full arithmetic down in how much a card machine costs in the UK and the cheapest card machine in the UK.
MerchantSwitch is a free comparison service; we are paid by providers when we successfully match a business. We are an introducer, not a lender or acquirer, and we are not regulated by the FCA.
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