Can fintech actually save UK merchants £5 billion a year?
Small businesses across the UK face constant pressure to protect their profit margins. Industry reports frequently suggest that British merchants collectively overpay by billions of pounds each year due to outdated contracts and confusing payment fee structures. The Payment Systems Regulator even stepped in to look closely at how card schemes operate because many businesses find it difficult to see what they are actually paying for.
When you run a busy retail shop or a café, transaction costs can quickly erode your takings if you don’t monitor them. Many providers bundle various fees together into a single opaque statement, making it tough to work out where you can make genuine savings.
The £5 billion figure that gets thrown around in industry circles assumes that most UK merchants are still overpaying by a significant margin on every card transaction. Whether that’s realistic depends on the type of business, the card mix, and the contract they’re on. Let’s examine how the underlying numbers work so you can see where your money really goes.
True costs behind a standard card transaction
Every time a customer taps a card, the final amount you pay gets split between three distinct entities. First, there is the interchange fee, which goes directly to the cardholder’s bank to cover transaction security. In the UK, domestic consumer debit cards have an interchange cap of 0.2%, while consumer credit cards sit at 0.3%. Business, premium, and international cards escape these caps, which often leads to unexpected cost increases for merchants who accept a lot of corporate spend.
How processors bundle your fees
The card networks also take a scheme fee for providing the payment infrastructure, while your payment processor adds an acquirer markup representing their profit margin. If you don’t check your monthly merchant statements carefully, this final processor markup can creep upward over time without your realisation.
Choosing between a transparent pricing model and a blended model will heavily influence your monthly expenses. High-volume retailers usually perform better on an interchange-plus model, which breaks out the non-negotiable fees from the processor’s actual cut. Smaller operators often prefer simple and transparent setups because they want predictability, even if it means paying a slightly higher rate on standard debit card transactions.
This is where those billions start to add up. When you multiply even a small pricing inefficiency across the UK’s 5.7 million SMEs, the aggregate overspend grows fast. The question isn’t whether merchants are overpaying. It’s how much of that overpayment is avoidable.
Extra charges that inflate merchant bills
Traditional merchant agreements often include several unexpected expenses that quietly drive up your effective processing rate. These ancillary charges are frequently left out of headline advertising rates, leaving business owners to discover them only when the first bill arrives.
Traditional contracts often contain the following extra fees:
- Fixed monthly terminal rental costs for each physical payment device.
- Mandatory annual or monthly PCI compliance fees.
- Punitive non-compliance charges if paperwork isn’t updated on time.
- Minimum monthly service charges that apply if your sales drop below a specific threshold.
These extra costs explain why some businesses see an effective processing rate of over 2.5% despite being promised a low headline rate. Eliminating these hidden charges is often where fintech providers deliver their biggest cost savings for small enterprises.
The final verdict
The claim that fintech can save UK merchants £5 billion a year contains a fair amount of marketing hyperbole, but the core message holds true for many businesses.That figure assumes every merchant in the country would switch to the cheapest available option, which isn’t how the market works. Some businesses are already on competitive rates, and others have transaction profiles that suit traditional contracts.
Where the savings are real is in the middle ground. Thousands of SMEs are sitting on blended rates that haven’t been reviewed in years, paying terminal rental fees they don’t need to, and absorbing ancillary charges they didn’t know they’d signed up for.
The £5 billion headline might be optimistic, but the underlying problem is well documented. If you haven’t reviewed your payment costs recently, there’s a good chance you’re paying more than you need to.