How To Compare Merchant Service Providers

Comparing UK merchant service providers is deliberately awkward. Every provider presents pricing in a slightly different format, uses different names for the same fees, and leans on the headline transaction rate in the sales conversation while the recurring monthly costs decide the real bill.

The result is that two businesses on paper-similar rates can pay wildly different effective rates once you add up terminal hire, PCI, minimums and authorisation fees. The framework below fixes that by forcing a like-for-like comparison across six dimensions.

A 0.65% headline can sit alongside a £25 monthly minimum, a £35 PCI fee, a £30 terminal hire and a £10 authorisation bundle - making the real effective rate substantially higher.

The clearest way to see this is to take a real month's statement, add every card-related fee together, then divide by card turnover for that month. Do the same exercise on any quote you receive using your own historical numbers. Only then are you comparing like with like.

Say your business takes £20,000 in card payments a month across 900 transactions. Provider A quotes 0.55% + £15 monthly + £25 terminal + 2p auth. Provider B quotes 0.95% + £0 monthly + £0 terminal + 0p auth (pay-as-you-go).

Provider A: £110 (rate) + £15 + £25 + £18 = £168. Effective rate 0.84%. Provider B: £190 + £0 + £0 + £0 = £190. Effective rate 0.95%. Provider A wins by £22/month - but only if you're confident on volume. Drop to £6,000 and Provider A's fixed costs push the maths the other way.

Support hours and terminal replacement SLAs decide whether a busy Friday night with a dead terminal costs you two hours or two days. Settlement speed decides whether you're funding wages on a Monday or a Wednesday. Contract length decides whether you can react to market changes over the next 24-48 months.

The cheapest provider on paper is not always the cheapest once you factor in the operational cost of poor service.