How a UK business takes payments is one of the few decisions that affects revenue, cash flow, customer experience, and compliance simultaneously. Get it right and the question disappears; get it wrong and you discover the cost line by line — through failed payments, slow settlement, surprise fees, and refunds you can't process. This article covers what UK businesses actually need to know, the trade-offs between the main options, and how to avoid the easiest mistakes.
The three core payment methods UK businesses use
- Card payments — Visa, Mastercard, Amex, taken in person or online. Fast settlement (1–3 days), higher fees (1.4–3.5% per transaction depending on type), higher fraud risk, and the dominant method for one-off and consumer purchases.
- Bank transfers (Faster Payments and Direct Debit) — sterling bank-to-bank movement. Cheap (often £0.20–£2 per transaction), slower, and the dominant method for B2B invoicing and recurring billing.
- Open Banking payments — newer, lets a customer authorise a single direct payment from their bank via authentication on their banking app. Very low cost, immediate settlement, no chargeback risk, but customer familiarity is still uneven.
Most businesses use at least two of these. The right mix depends on what you sell, who you sell to, and how repeat the relationships are.
Cards: the providers and what to compare
For UK card processing, the major options are PSPs (payment service providers) like Stripe, Adyen, Worldpay, Square, and SumUp. They differ on:
- Headline fee per transaction (UK consumer cards typically 1.4–1.9% + 20p; commercial and international cards higher).
- Hidden fees — currency conversion, chargeback fees, monthly minimums, gateway fees, early-termination clauses.
- Settlement speed — most UK PSPs settle T+2 or T+3; some are faster on premium plans.
- Integration — what platforms it plugs into without custom development.
- Disputes and chargebacks — how the provider handles them, and what evidence they require.
- Risk and reserves — high-risk categories (subscriptions, future-dated services, high-ticket B2C) may face rolling reserves or holds.
The headline rate is rarely the whole picture. A 0.4% difference matters at scale; for a small business, the difference between providers is often more about settlement speed and integrations than per-transaction cost.
Direct Debit and recurring billing
For recurring invoices, subscriptions, or membership revenue, Direct Debit through Bacs is dramatically cheaper than card processing. Providers like GoCardless layer onto the Bacs scheme to make it usable for SMBs without managing the bank-level infrastructure directly. Trade-offs:
- Lower per-transaction cost (typically 1% capped at a few pounds, vs. 1.5%+ on cards).
- Slower setup — first payment usually takes 5–7 working days from mandate.
- Lower failure rate than expired-card recurring charges, which improves retention.
- Customer protection via the Direct Debit Guarantee, which means refunds can be claimed long after the payment.
Open Banking: when it actually fits
Open Banking payments (Pay by Bank, A2A, account-to-account) let customers authorise a one-off transfer from their own bank account during checkout. For UK businesses with mostly UK customers, the case is strong on:
- High-ticket items where 1.5% on a card is meaningful (£20+ saving per transaction).
- Invoicing flows where customers are already UK-banked.
- One-off payments where chargeback risk is asymmetric.
Less suited to: international customers, low-ticket consumer transactions, and any flow where customer familiarity with the auth pattern is critical.
Compliance: PCI-DSS and Strong Customer Authentication
Two regulatory frameworks set the floor for UK card processing:
- PCI-DSS (Payment Card Industry Data Security Standard) governs how cardholder data is handled. Most SMBs satisfy this by using a PSP that handles card data on its servers — the merchant never touches the raw card numbers, which simplifies the obligations dramatically.
- SCA (Strong Customer Authentication) — part of PSD2 — requires two-factor verification for most UK and EU online payments. PSPs handle the mechanics; the merchant has to implement the right checkout flow and sometimes 3DS-friendly transaction structures.
What good payment infrastructure does
Beyond just taking the payment, infrastructure that earns its keep typically:
- Reconciles automatically with the accounting system so payouts match invoices without manual matching.
- Surfaces failed payments and decline reasons in time to take action.
- Provides retry logic for recurring billing so soft declines don't become churn.
- Supports both card and bank-transfer payments through one interface so customers can choose.
- Hands off cleanly to a chargeback dispute workflow when required.
- Reports on cash position in near-real-time, not at month-end reconciliation.
Common mistakes
- Optimising for headline rate alone. Hidden fees, settlement speed, and integration friction usually matter more.
- Cards for everything. Recurring revenue on cards loses 5–15% per year to expired cards and declines. Direct Debit recovers most of that.
- Manual reconciliation. If payments aren't tied to invoices automatically, the team will eventually stop matching them and bookkeeping decays.
- One provider, no fallback. If your sole PSP has an outage, your revenue stops. Larger businesses run a primary plus secondary; SMBs at minimum should have a tested fallback to invoice-based payment.
- Ignoring chargeback rates. A high chargeback ratio can result in reserves, fee increases, or termination by the PSP. Track it monthly.
Where Rajoka fits
Inside the Rajoka portfolio, BryxoPay provides payment infrastructure for UK businesses focused on faster collections and smoother transactions. Payments sit inside the growth pillar of the four-pillar model. The full Rajoka portfolio is on the portfolio page.
Frequently asked questions
What's the cheapest way to take payments for a UK business?
For one-off payments, Open Banking (Pay by Bank) and direct bank transfer are typically the cheapest, often at flat fees of £0.20–£1 per transaction. For recurring payments, Direct Debit through providers like GoCardless costs around 1% capped at a few pounds — much cheaper than card processing. Cards are usually the most expensive option but offer the broadest customer reach.
What's the difference between Stripe and GoCardless?
Stripe is a card-first payment service provider — it handles credit and debit card processing, online wallets, and a growing range of bank payment methods. GoCardless is built around UK Bacs Direct Debit and SEPA Direct Debit — best for recurring B2B invoices and subscriptions. Many UK businesses use both: Stripe for one-off card payments, GoCardless for recurring Direct Debit billing.
Do I need a merchant account to take card payments in the UK?
In the strict sense yes, but modern PSPs like Stripe, Square, and SumUp bundle the merchant account into their offering, so a small UK business can sign up directly without negotiating a separate merchant account with a bank. Larger businesses with high transaction volume often negotiate dedicated merchant accounts for better rates.
What is Strong Customer Authentication (SCA)?
Strong Customer Authentication is a UK and EU regulatory requirement under PSD2 that most online payments must use two-factor verification — typically a card combined with a one-time code, biometric authentication, or banking app approval. Payment service providers handle the mechanics; the merchant's responsibility is to implement an SCA-compliant checkout flow.