Negotiating payment processing fees for SMEs by volume in 2026

The verdict in three sentences

Above €1M processed per year, staying on your payment service provider's (PSP) public rate, around 1.2 to 1.5% plus €0.25 per European card, means leaving several thousand euros on the table every year. The main lever is moving to interchange plus plus (IC++) pricing, where you pay the real network cost plus a negotiated margin of 0.3 to 0.8%. For an SME processing €2M, the gap commonly reaches €10,000 to €15,000 per year, for an integration of €2,000 to €8,000 excl. VAT.

Understanding what you really pay

The blended rate shown by most PSPs mixes three costs: the interchange fee paid to the cardholder's bank, Visa and Mastercard scheme fees, and the PSP's margin. Under IC++, these three lines are separated on the invoice, which makes the margin visible and negotiable.

Watch out for commercial cards, common in B2B: their interchange is not capped by EU regulation and can exceed 1.5%. A single blended rate often hides a PSP loss on these cards, offset by a high margin on consumer cards.

Negotiation levers by volume tier

Preparing the negotiation

• Export 12 months of transactions: debit/credit mix, share of commercial and non-EU cards, average basket, dispute rate.
• Put two or three PSPs in competition with the same file, and ask for a costed simulation on your real data.
• Negotiate ancillary fees too: refunds, currency conversion (often 1 to 3%), payout delay, rolling reserve.
• Push transfers and direct debit for recurring business customers: at €0.30 flat, a €3,000 payment costs 100 times less than by card.
• Check the commitment term: 12 months maximum, with a review clause if volume exceeds the tier.

Mini case study

Illustrative scenario: Sophie, CFO of a business supplies SME in Nantes, processes €2M a year online, with a €120 average basket, i.e. about 16,700 transactions. 85% of the value comes from EU cards, 15% from non-EU cards.

At the public rate (1.4% + €0.25 in the EU, 2.9% + €0.25 outside), she pays €36,670 a year. Under IC++ with a negotiated margin of 0.4% + €0.10, the estimated cost drops to €23,920. Savings: €12,750 per year, for a €5,000 excl. VAT integration (new API, tests, accounting reconciliation). Payback in 5 months. By moving 20% of recurring business customers to SEPA direct debit, she saves another €2,000 to €3,000 a year.

FAQ

From what volume can you ask for IC++?

Most PSPs accept it from €1M per year, some from €500,000. Below that, negotiate a 0.1 to 0.3 point cut on the blended rate instead.

Is switching PSP risky for the site?

The risk is manageable with 2 to 4 weeks of testing and a gradual switchover. Allow €2,000 to €8,000 excl. VAT of integration depending on your e-commerce platform.

Is IC++ always cheaper?

Not always: if your mix contains many commercial or non-EU cards, the gain can be small. A simulation on 12 months of real data settles it in a few days.

Should you have several PSPs?

Above €10M or with strong international exposure, yes: a second PSP secures the acceptance rate, which can vary by 2 to 5 points between acquirers.

Which hidden fees should you watch?

Currency conversion at 1 to 3%, dispute fees of €15 to €25, rolling reserves and refund fees. They can account for 10 to 20% of the total bill.

Let's scope your project. Send us your transaction export: we simulate IC++ with two or three providers, price the integration between €2,000 and €8,000 excl. VAT and plan a switchover in 3 to 6 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.