Selection criteria, comparison grid, real costs, PSD2 and GDPR compliance, sovereignty: a method for picking the right acceptance method.
Choosing a payment solution is not just about comparing percentages. The right choice depends on your sales channel, your average basket, your customer base and your tolerance for cash-flow risk. Here is a six-criteria method to decide without getting it wrong.
First criterion: the channel. A physical shop needs in-person acceptance that is fast and tolerant of a poor connection. An online service needs a payment link or an integration. A freelancer billing per assignment mostly needs to be paid quickly and to chase easily. These three profiles do not call for the same solution.
Second criterion: the full cost. Add up the per-transaction commission, the fixed part, the subscription, the equipment rental and the cost of the settlement delay. On an average basket of fifteen euros, a fixed commission of twenty-five cents weighs more than a percentage point. Do the calculation on your real volume, not on a generic example.
Third criterion: the settlement delay. Being paid on D+3 rather than immediately represents a permanent working-capital need. For a young or seasonal business, instant settlement via SEPA Instant removes that need entirely.
Fourth criterion: risk. Remote card payments expose you to chargebacks, sometimes several weeks after the sale. An instant transfer is irrevocable: the seller is certain of having been paid. Conversely, the buyer loses the recourse specific to the card scheme, which makes account-to-account better suited to trusted relationships than to sales to strangers.
Fifth criterion: compliance. Check that the provider is licensed or in the process of being licensed with the competent regulator, that it applies the strong authentication required by PSD2, and that data is hosted in the European Union. A provider subject to a non-European jurisdiction can create regulatory exposure, notably under the Cloud Act.
Sixth criterion: sovereignty and dependence. A solution relying entirely on the Visa and Mastercard schemes exposes you to their pricing changes, over which you have no control. Having a second, European, account-to-account rail is a resilience measure as much as a saving.
In practice, the best architecture for a European SME combines two building blocks. A card solution for international customers and remote sales. An instant account-to-account solution for local payments, recurring customers and large amounts, where the commission saving is greatest.
Before signing, systematically ask five questions: what is the total cost on my annual volume, how quickly am I credited, what is the lock-in period, who bears the fraud risk, and where is my data hosted. Written answers to these five questions are enough to rule out half the offers.
Finally, test before switching. Run the new solution in parallel for a month on part of your sales, measure the acceptance rate among your customers and the real settlement delay, then decide with figures drawn from your own activity rather than from a sales brochure.