Every month, businesses lose sales because their online payment funnel is too slow, too rigid, or poorly adapted to their customers’ habits. The problem does not lie with the product sold, but with the moment the buyer pulls out their card. Choosing the right online payment solution for your business directly impacts the conversion rate and cash flow.
Account-to-account payment: the alternative to cards that SMEs overlook
You may have noticed that most guides compare Stripe, PayPal, or Mollie without mentioning a growing option? Account-to-account payments (often referred to as A2A) go directly from the customer’s bank account to the merchant’s, without passing through Visa or Mastercard networks.
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Specifically, the customer validates a transfer from their banking interface at the moment of purchase. The process relies on payment initiation (PISP), a mechanism governed by the European DSP2 regulation.
A2A payments reduce transaction fees and chargebacks. Several large merchants and marketplace platforms are already positioning this payment method as the default option for certain journeys, particularly in B2B and in high-value sectors like travel or ticketing. Specialized players on flashwave.fr are supporting this transition towards more direct and cost-effective payment solutions.
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For an SME handling invoices of several hundred euros, the cost difference compared to card payments becomes significant over a quarter.
Online payment fees: understanding what you are really paying
Before comparing pricing grids, it’s essential to understand the mechanics. When a customer pays by card on your site, at least three intermediaries take a cut: the issuing bank (the customer’s), the card network (Visa, Mastercard), and your payment provider.
Transparency on transaction routing
Since 2023, the European Commission has been urging banks and payment service providers (PSPs) to offer more transparency on the card schemes used. The goal is to encourage routing towards the least expensive option for the merchant, particularly for cross-border payments within the European Economic Area.
Ask your PSP which card scheme is applied by default. If your customers predominantly pay with co-branded cards (bearing both a Visa or Mastercard logo and a domestic network), you potentially have room for negotiation on routing.
Flat-rate model or variable commission
Two main pricing models coexist:
- The flat-rate model applies a fixed percentage per transaction, regardless of the card type. Simple to understand, but not always the cheapest if your average basket size is high.
- The interchange++ model reflects the actual cost of interchange (variable depending on the card) and adds a fixed margin from the provider. More opaque at first glance, but often more economical for businesses with a regular transaction volume.
- Some PSPs also charge monthly fees, chargeback fees, or fees on international payments. These secondary lines can weigh heavily if you do not anticipate them.
Always compare the total monthly cost, not the rate displayed on the homepage.
Technical integration of a payment solution: concrete pitfalls
Choosing a provider is not just about comparing prices. The integration into your site or application determines the fluidity of the customer journey, and thus your revenue.
A rarely discussed point: managing payment failures. A customer whose card is declined the first time often abandons their cart. The best solutions automatically retry the transaction via another scheme or offer an alternative payment method without the customer leaving the page.
Tokenization and PCI-DSS compliance
Tokenization replaces sensitive card data with a unique token, unusable outside your system. This mechanism frees you from storing card numbers on your servers, significantly easing your PCI-DSS compliance obligations.
If your provider manages tokenization, you do not need to undergo a full PCI audit. This is a significant time and budget saving for an SME that does not have a dedicated security team.
B2B online payment: different constraints from B2C
Transactions between businesses have their own rules. Amounts are higher, payment terms are negotiated, and payment methods vary (bank transfer, SEPA direct debit, promissory note).
A solution designed for B2C does not cover the needs of a business that invoices at 30 or 60 days. You need a tool that manages automatic reminders, bank reconciliation, and the issuance of compliant receipts.
A2A payments make perfect sense here: no card limits, no chargebacks possible, and a significantly lower cost per transaction. Several platforms specializing in B2B payment management now integrate payment initiation as the main channel.
- Check that your solution supports recurring SEPA direct debits if you invoice subscriptions or monthly contracts.
- Ensure that reporting allows exporting data to your accounting software without manual re-entry.
- Control currency management if you work with suppliers or clients outside the euro zone.
Choosing an online payment solution is not just about ticking features off a list. What makes a difference on a daily basis is the provider’s ability to adapt to your billing model, your actual volumes, and your customers’ payment habits. Always test in real conditions before committing to an annual contract, simulating your most frequent scenarios: split payment, partial refund, reminder on overdue payment.