The verdict in three sentences
In B2B, every day of DSO (average collection time) is cash locked up and chasing time wasted. Integrating online invoice payment (Stripe for cards, GoCardless/SEPA for direct debit, instant transfer) costs 4,000 to 14,000 EUR, takes 3 to 5 weeks, and pays off through automatic reconciliation that cuts DSO by 10 to 25 days. The real lever isn't cards but recurring SEPA direct debit: low fees and predictable collection.
Payment methods and 2026 fees
Each method has its cost and use. Cards are instant but expensive on large amounts; SEPA is cheap but deferred; instant transfer is gaining ground. 2026 ballpark for the European market.
| Method | Typical provider | 2026 fees | Collection time |
|---|---|---|---|
| Card | Stripe | 1.4% + 0.25 EUR (EU) to 2.9% | Instant |
| SEPA direct debit | GoCardless, Stripe | 0.5 - 1% (capped) | 2 - 3 days |
| Standard SEPA transfer | Bank / aggregator | 0 - 0.20 EUR | 1 business day |
| Instant transfer | PSD2 aggregator | 0.20 - 0.50 EUR | < 10 seconds |
| Installment payment | Stripe / B2B BNPL | 2 - 4% | Instant (advance) |
For high-value B2B invoices, steer the customer toward SEPA or transfer: on an 8,000 EUR invoice, cards cost ~180 EUR in fees versus ~40 EUR with capped SEPA.
What integration costs and returns
Budget depends on the automation level: a simple payment link, or a full portal with accounting reconciliation. 2026 ballpark.
| Scope | Functions | Cost (EUR) | Timeline |
|---|---|---|---|
| Per-invoice payment link | Card + email | 4,000 - 6,000 | 3 weeks |
| Customer invoice portal | Multi-invoice, history | 7,000 - 10,000 | 4 weeks |
| Auto reconciliation + reminders | Matching, ERP, recurring SEPA | 11,000 - 14,000 | 5 weeks |
| Multi-currency / international | EUR/USD, Stripe | +2,000 - 3,000 | +1 week |
Automatic reconciliation (matching invoice to payment in the ERP or accounting software) is the line item that truly lowers DSO and frees up the collections team.
Reconciliation and security
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A payment collected but not reconciled creates manual work and wrong reminders. The connector must auto-match on the invoice reference, handle partial payments and stay PCI-DSS compliant (card data flows through the provider, never your server). Also plan for SEPA debit failures (automatic retry).
Mini case study
Celine, CFO of a trading SME in Lille, invoices ~2.4M EUR/year with a 58-day DSO. The payment portal with automatic reconciliation and recurring SEPA cost 12,000 EUR and 5 weeks. By bringing DSO down to 40 days (-18 days), she permanently frees about 118,000 EUR of cash, saves ~1.5 person-days/week of chasing, at transaction fees of about 0.8% steered to SEPA: the integration pays for itself within the first quarter.
FAQ
Cards or SEPA for B2B? SEPA (debit or transfer) for high, recurring amounts: low fees and predictable collection. Cards remain useful for small one-off amounts or instant payment.
How does online payment cut DSO? By removing friction (the customer pays in one click from the invoice) and automating reconciliation, which speeds collection and avoids chasing already-paid invoices.
Is it compliant and secure? Yes: providers like Stripe or GoCardless are PCI-DSS certified and licensed. Card data never touches your server, sharply reducing your compliance scope.
Can it connect to accounting or the ERP? Yes, that's the core value: automatic matching pushes payments into your tool (Sage, Cegid, ERP). Budget the "auto reconciliation" tier from 11,000 EUR.
What real fees to expect? From 0.5% on capped SEPA to 2.9% on cards. Steering large amounts to SEPA optimizes the overall fee bill.
Let's scope your project. Share your invoicing volume, current DSO and accounting software: we'll price the portal, reconciliation and the optimal payment-method mix. 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.
