Online Payment Provider Fees for Service SMBs in London 2026

The verdict in three sentences

For a service SMB in London (training, consulting, maintenance) that wants to collect deposits and subscriptions, the fee gap between Stripe, GoCardless and Mollie rarely exceeds 0.5 point, but it matters above GBP 250,000 collected per year. The real saving lever is bank debit (Bacs Direct Debit or SEPA for EU clients), charged per transaction with a cap instead of an open percentage. A clean integration costs GBP 1,300 to 5,200 (about EUR 1,500 to 6,000) and cuts average payment time by about 15 days.

2026 fee comparison for a service SMB

The rates below are standard public pricing in 2026 for UK and European cards. Above roughly GBP 40,000 per month, every provider will negotiate.

GoCardless is the reference for recurring bank payments in the UK. Stripe remains the most complete for subscriptions and automated invoicing. Mollie stands out with a simple interface and low-cost debits.

What each payment method really costs

Percentages mislead on large tickets. On a GBP 4,200 consulting invoice, a card costs about GBP 63 with Stripe, while a capped bank debit costs GBP 2.

The right strategy combines cards for deposits and small amounts, and bank debit for large invoices and maintenance subscriptions.

Integration: from payment link to client portal

There are three levels. The first, payment links generated by hand, costs nothing but does not scale. The second, payment embedded in the website and invoicing software (Xero, QuickBooks, FreeAgent), costs GBP 1,300 to 2,600. The third, a client portal with quote signature, deposit payment, debit mandate and automatic accounting reconciliation, costs GBP 3,500 to 5,200. Require Strong Customer Authentication compliance and webhook handling so each payment updates the invoice without manual work.

Mini case study

Mark, managing director of a 12-person training company in London, invoices GBP 540,000 per year, 40% as deposits and 25% as learning maintenance contracts. Before the project, clients paid by bank transfer in 52 days on average. With a Stripe portal at GBP 3,900, 55% of revenue moves to bank debit and 45% to cards: annual fees come to about GBP 4,200. Payment time drops to 37 days, freeing roughly GBP 22,000 in cash. He also removes 6 hours of chasing per week, worth about GBP 8,000 a year in admin time.

FAQ

Which provider is cheapest for a service SMB in 2026?

On UK cards, Stripe at 1.5% + 20p is often cheapest at public rates. GoCardless and Mollie are competitive on bank debit, and negotiated rates beat public pricing above GBP 40,000 per month.

Can we collect a deposit when the client signs the quote?

Yes, Stripe and Mollie offer payment links and hosted pages, and GoCardless can set up a mandate at signature. Combining e-signature and deposit lifts quote conversion by 10 to 20% depending on the sector.

Is Direct Debit suitable for business clients?

Yes. The cost is capped at GBP 2 to 4 per payment, which makes it ideal for invoices above GBP 400 and monthly subscriptions.

How much does integrating payments into our site and invoicing cost?

Allow GBP 1,300 to 2,600 for embedded payment and GBP 3,500 to 5,200 for a full client portal with debit mandates and reconciliation. Delivery takes 3 to 6 weeks.

Should we keep bank transfers?

Yes, as an option for large accounts and the public sector, which often impose their own rules. But it should no longer be the default, since it adds about 15 days on average.

Let's scope your project. Share your annual collected volume and invoicing software: we will compare Stripe, GoCardless and Mollie on your numbers and price the integration between GBP 1,300 and 5,200. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.