Accepting Payments at a Glance

The UK is now a digital-first payments economy. UK Finance recorded 48.8 billion payments in its UK Payment Markets 2025 report, with card payments at 64% of all transactions and cash below 10% — just 9% — for the first time on record.

So the real question is which mix fits how you sell. If you run a market stall on Saturdays and invoice trade customers midweek, you need two methods — and your cash flow depends on how fast each settles. We suggest matching the channel first, cost second.

In-person and online card-acceptance fees in 2026 cluster between roughly 1.4% and 2.95% depending on channel and provider, before scheme fees and any monthly minimum. Figures verified May 2026 against provider pricing pages.

The Main Ways to Accept Payments in the UK

Six methods cover almost every UK business. The right one depends less on price than on how money reaches you: in person, online, by invoice, on a schedule, or bank-to-bank. Each fits a situation — and each has one drawback worth knowing before you commit.

How Card Payment Processing Works

When a customer taps their card at your till, the payment moves through three steps: authorise, clear, settle. Knowing them explains why the money lands in your account a day or two later, and why your fee is split between several parties you never deal with directly.

Authorisation happens in seconds. The terminal or gateway asks the cardholder’s bank — the issuer — whether funds exist and the card is genuine. For online payments, 3D Secure 2 runs here, checking the customer’s identity before approval.

Clearing reconciles the day’s approved transactions between the card schemes (Visa, Mastercard), the issuer, and your acquirer. Settlement then moves the actual funds, minus fees, into your account — the step that determines when you get paid.

Your fee is built from three layers: the interchange fee paid to the issuer, the scheme fee paid to Visa or Mastercard, and your acquirer’s markup. With a flat “blended” rate you see one number; with interchange-plus you see each layer separately.

What Accepting Payments Costs

Before comparing anything, work out your effective rate: total fees divided by total card volume. It captures the fees the headline rate hides. A salon owner who pulls three months of statements on a Friday evening often finds the real cost is 2.1%, not the 1.6% quoted.

Everyday UK consumer cards have capped interchange: 0.2% on debit, 0.3% on credit, retained in UK law after Brexit. Commercial and corporate cards are exempt and run far higher — typically 1.15% to 2.0%.

So if you take on more business customers paying on company cards, your effective rate drifts up even though your headline rate never moved. We see this catch out shops that add trade accounts.

Flat-rate readers win at low volume because there is no monthly fee. Picture a café taking £4,000 a month in cards: on Square at 1.75% that is £70, with no commitment.

Push past £5,000 and a negotiated rate plus terminal rental starts to win. We put the switch point roughly between £3,000 and £5,000 in monthly card turnover — worth modelling before you sign anything.

Settlement speed varies, and it matters to your cash flow. Next-working-day is now the baseline; SumUp pays out within about three hours to its own account, myPOS settles instantly for free, and Square charges 1.5% for Instant Transfer. Verified May 2026.

How to Set Up Payment Acceptance

Setting up is a sequence, not a single decision, and we suggest working through it in order. Choosing the method before you know your own channel mix is how businesses end up paying for the wrong thing.

1. Map your channels. Write down where money actually comes in: counter, website, invoices, subscriptions. Most businesses need two methods, not one. This map decides everything that follows.

2. Choose the matching method. Face-to-face points to a reader or tap-to-pay; online points to a hosted checkout; recurring points to Direct Debit or card-on-file. Use the table above.

3. Apply and onboard. On the morning you apply, have your documents to hand — director ID, business bank details, Companies House number and an estimate of monthly card volume — or you’ll lose a few days to back-and-forth. Flat-rate readers onboard same-day; a merchant account takes longer.

4. Confirm settlement and fees in writing. Check when funds land, whether weekends are included, any rolling reserve, and the monthly minimum. Confirm the provider is FCA-authorised on the FCA Register before you sign.

5. Test, then go live. Push a small real transaction through every channel and confirm the payout arrives when promised. For online, run the 3D Secure 2 flow end to end. Don’t take settlement on trust.

The UK Rules That Apply (PCI DSS, SCA, PSR)

Three frameworks govern what you must get right. None is optional, but how much each costs you depends on the method you choose.

PCI DSS v4.0.1. Mandatory since 31 March 2025, with no grace period. Compliance is your obligation, not your provider’s. Using a hosted checkout — the customer enters card details on the provider’s page — keeps you on the simplest SAQ A self-assessment.

Storing raw card numbers yourself, by contrast, triggers the punishing SAQ D assessment. Use network tokenisation or a hosted vault rather than a spreadsheet or CRM field.

Strong Customer Authentication (SCA). Required for most online card payments under PSD2. The mechanism is 3D Secure 2, which verifies the customer using two factors and lets low-risk payments pass frictionlessly while challenging higher-risk ones via a banking-app approval.

PSR Specific Direction 16. Since 6 January 2023, the 14 largest acquirers must cap new card-machine contracts at 18 months for merchants with card turnover up to £10 million, then roll to monthly with one month’s notice. Check your own contract against this before signing anything longer.

Common Mistakes to Avoid

The costly errors we see in payment acceptance are structural, not careless. These four quietly destroy margin or create compliance liability — and all are avoidable if you spot them before you sign.

Choosing the Right Setup for Your Business

Decide on three axes: where you sell, your volume and price sensitivity, and your compliance exposure. The first picks the method; the second picks the pricing model; the third picks how you handle card data.

For a market trader or mobile service business, we’d steer you to a flat-rate reader or tap-to-pay on phone — no monthly fee, instant to start. Once a shop is past £5,000 a month in cards, we’d price up interchange-plus and compare the effective rate, not the headline.

If you run an online store, we suggest defaulting to a hosted checkout to keep your PCI scope small, then adding open banking if you take high-value or high-dispute orders. A subscription business needs Direct Debit or compliant card-on-file from day one.

For provider-by-provider comparisons, see our payment processing roundups and individual reviews rather than choosing on headline rate alone.

Frequently Asked Questions

How We Researched This Guide