The verdict in three sentences
A multi-PSP architecture shields you from a single point of failure and lets you route each payment to the cheapest provider by method and amount. For an SME, integration runs 8,000 to 20,000 EUR over 3 to 5 weeks, with fees ranging from 1.2 % for SEPA direct debit to 2.9 % + fixed for international cards. The real hidden win isn't the fee but automatic accounting reconciliation, which removes hours of manual matching.
Comparing PSPs and their 2026 fees
2026 estimates, EUR excl. VAT. Exact rates depend on your negotiated volume.
| PSP / method | 2026 fee | Best for | Payout delay |
|---|---|---|---|
| Card via Stripe (EU) | 1.4 % + 0.25 EUR | B2C and mid B2B baskets | 2 to 3 d |
| International card | 2.9 % + 0.25 EUR | Non-euro-zone customers | 2 to 3 d |
| SEPA direct debit (GoCardless) | 1.0 to 1.5 % (capped) | Subscriptions, large B2B baskets | 3 to 5 d |
| Bank transfer / dedicated IBAN | 0.1 to 0.5 % or fixed | High B2B amounts | Immediate to D+1 |
| Instalment payments | 2.5 to 4 % (to merchant) | Baskets > 500 EUR | Depends on offer |
On a 3,000 EUR B2B basket, card costs ~42 EUR in fees where a capped SEPA debit costs ~4: routing large amounts to SEPA or transfer saves several margin points.
What the technical integration covers
| Item | 2026 range | Why it's needed |
|---|---|---|
| Multi-PSP connection + routing | 3,000 to 7,000 EUR | Automatic choice of optimal provider |
| 3-D Secure v2 / SCA | PSP-included + 1,000 to 2,000 EUR | PSD2 compliance, lower fraud |
| Instalment payments | 1,500 to 4,000 EUR | Lifts conversion on large baskets |
| Automatic accounting reconciliation | 2,500 to 6,000 EUR | Bank/ledger matching without entry |
| Webhooks & failure handling | 1,000 to 3,000 EUR | Auto-retry, zero lost payment |
Automatic reconciliation is the most underestimated item: it's often what makes the project profitable, not the fee reduction alone.
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Mini case study
Claire, CFO of an industrial SME in Dublin, collects 4.5 M EUR/yr online, 60 % of it on cards at 1.8 % average, i.e. 48,600 EUR/yr in fees. By routing the 40 % of baskets above 2,000 EUR to SEPA direct debit and transfer (cost cut to ~0.6 %), she saves around 21,000 EUR/yr in fees. The 16,000 EUR multi-PSP integration pays back in under 10 months. As a bonus, automatic reconciliation saves her accountant 6 hrs/week (~11,000 EUR/yr loaded) previously spent matching statements by hand.
FAQ
Why not just use a single PSP like Stripe? A single PSP creates a point of failure: an outage or account suspension blocks all your collections. Multi-PSP adds resilience and lets you optimize fees by payment type.
Is 3-D Secure mandatory? Yes, PSD2 requires strong authentication (SCA) on most EU card payments. 3-D Secure v2 is built into PSPs, but its configuration (exemptions, flows) directly affects your conversion rate.
Are instalment payments worth their fee? On B2B baskets above 500 EUR, they typically lift conversion by 10 to 20 %, which more than offsets the 2.5 to 4 % taken. Reserve them for high amounts where the cash-flow effect matters to the customer.
How long to integrate all this? 3 to 5 weeks for an SME with an existing site, including 3-D Secure and webhook testing. Reconciliation can be added in phase 2 if the initial budget is tight.
Does automatic reconciliation work with my accounting software? Yes for the major ones (Sage, Cegid, QuickBooks, etc.) via export or API: each collection is auto-matched to its invoice with fees itemized. This removes re-keying and firms up cash-flow tracking.
Let's scope your project. Share your annual volume, current payment methods and accounting software: we quote a multi-PSP architecture with estimated fee savings. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
