Card Processing for Accountants UK 2026

Accounting practices have a specific payment challenge: clients pay infrequently, often for large invoices, and expect a professional experience that matches the fees they are being charged. Choosing the wrong card processor means paying percentage fees that eat into margins on high-value payments, or dealing with clunky payment links that undermine client confidence. This page covers the best credit card processing options for UK accountants in 2026, with real rates and honest assessments.

Who Is This Page For

This page is for UK-based accountants, bookkeepers, and accounting practices of all sizes looking to accept card payments from clients. It covers sole practitioners handling a handful of clients, small practices with five to 20 staff, and larger firms processing significant monthly volumes. If you charge retainers, issue invoices, or take one-off fees for tax returns or year-end work, this page addresses your specific situation.

What Does an Accountant Need from a Card Payment Setup?

Most accounting practices do not need a card terminal sitting on a reception desk. Client meetings increasingly happen remotely, and even in-person consultations rarely end with a client tapping a card. What you actually need is a virtual terminal or a payment link you can embed in an email invoice. The payment should be simple enough that a 60-year-old client who has just received their tax bill can pay in under two minutes without calling you to ask how.

Recurring billing is the other essential feature for any practice with monthly retainer clients. Manually chasing 30 clients for the same £250 each month costs real time. A processor with automated recurring payments, such as GoCardless or Stripe, handles that automatically. Settlement speed also matters. If a client pays a £5,000 invoice on a Monday, you want that money on Tuesday morning, not Friday.

Fee Comparison: Best Options for Accountants

Our Top Pick for Accountants: Stripe

Stripe is the strongest fit for most UK accounting practices. It charges 1.5% per transaction on UK personal Visa and Mastercard debit and credit cards with no monthly fee, and it integrates directly with accounting software including Xero, QuickBooks, and FreeAgent. You can send a payment link inside any invoice email and the client pays without creating an account. Settlement typically lands in your bank account by the next working day.

Stripe's recurring billing tool handles monthly retainers automatically once a client has saved their card details. You set the amount and the billing date, and Stripe charges the client and emails a receipt without any action from you. That is the single feature that saves most practices the most time. The dashboard is clear enough that your bookkeeper or practice manager can handle it without specialist training.

The honest negative: Stripe's transaction fee for European-issued cards rises to 2.5%, and for non-European cards it is 3.25% plus a 1.5% currency conversion fee. If you serve many international clients, that adds up quickly. Stripe also has no UK telephone support on its standard plan, which frustrates some users when a payment fails and they want to speak to a person. Read the full Stripe review on Compare Card Fees before committing.

Runner-Up Options

GoCardless: Best for Retainer-Heavy Practices

GoCardless works differently from Stripe. It pulls payments via Direct Debit rather than card, which means lower fees: 1% plus 20p per transaction on its Standard plan, capped at £4. For a practice billing 40 clients £300 a month, that cap alone saves a meaningful amount compared with card processing fees. Clients authorise the Direct Debit once, and every future payment is pulled automatically on the date you set.

The drawback is that Direct Debit is not instant. Payments take three working days to clear, and clients can dispute and reverse a Direct Debit for up to 60 days after the fact, which creates occasional cash flow uncertainty. GoCardless also does not accept card payments, so if a client insists on paying by card, you need a separate solution. See the GoCardless review on Compare Card Fees for full details on the Plus and Pro plans.

Square: Best for Sole Practitioners Wanting Simplicity

Square suits a sole practitioner or two-person practice that takes payments infrequently and wants zero monthly cost. There is no setup fee, no monthly fee, and no contract. The virtual terminal charges 2.5% per transaction for card-not-present payments, which is higher than Stripe for the same scenario, but the simplicity is hard to beat. You can be accepting payments within an hour of signing up.

Square is less suitable once your monthly volume grows. At £10,000 a month through the virtual terminal, you pay £250 in transaction fees at 2.5%, compared with £150 at Stripe's 1.5% rate. That £100 monthly difference becomes £1,200 a year and is hard to justify once your practice reaches that size. Read the Square review on Compare Card Fees to compare the full feature set.