What You Really Pay in Card Fees (and How the Digital Euro Could Change the Math)

Ask a restaurateur what their food cost is, and nine out of ten give you a precise number: “28%, I watch it every month.” Ask what they pay in card fees, and the room goes quiet. “No idea, really… they just take it.”

It’s a paradox that costs real money. On food cost we fight for every percentage point, while a line that erodes revenue on every single electronic payment sits in the dark — unmeasured, almost never negotiated. In a world where card payments are now the norm, that “small percentage” is a cost line in its own right — often several thousand euros a year.

In this article we put the real numbers on the table, see why the steepest bills land where you least expect, and — with a calculator below — estimate what fees cost you over a year. Then we look ahead: what changes with the digital euro.

The fee is an invisible tax on your takings

When a guest pays €50 by card, €50 doesn’t land in your account. €49.40, or €49.10, does — depending on what the circuit keeps. That gap is the fee, and it’s usually made of three pieces:

• A percentage of the amount (the bulk of the cost): typically between 0.5% and 2%.
• A fixed per-transaction amount, in some tariffs: a few cents, but decisive on small tickets (more on that shortly).
• A monthly charge for the terminal or service: anywhere from €0 to €20-30 a month depending on the plan.

The awkward part is that these costs are fragmented and automatic: you don’t send a transfer, you don’t sign an invoice each time. They self-deduct, transaction after transaction, until at year-end you’ve paid a figure that — if it were handed to you all at once — would make you flinch. It’s the same psychological trick that makes the coperto invisible until you aggregate it, which we covered in the coperto as a revenue line: except here it works against you.

The real numbers (and why they surprise you)

Let’s anchor this with concrete references from market data.

The typical range runs from around 0.5% to 2%, and pan-European providers with a single rate are transparent but not always cheap: SumUp, for instance, charges roughly 1.95% per transaction on its base plan, dropping to 0.95% only with a plan at about €19 a month. The choice between “no monthly fee but high percentage” and “a monthly fee but low percentage” depends entirely on your volume — and it’s the first thing to recalculate.

Then there’s a figure that should make your ears prick up: across Europe, average merchant fees nearly doubled between 2018 and 2022, and small merchants pay three to four times more than large ones. Translation: the smaller you are, the worse your terms. Exactly the opposite of what you’d want.

The worst case: small tickets

Here’s the real bleed, and it’s counterintuitive. The lower the ticket, the higher the impact of the fee.

Run the math on a credit card:

• On a €5 coffee or dessert, a fee of even €0.50 is 10% of the sale. A point of food cost looks gentle by comparison.
• On a €25 bill, credit-card fees run roughly €0.65 to €1.13 depending on the bank; debit, €0.63 to €1.00.
• On a €50 bill, the same logic dilutes the percentage weight, but in absolute terms you still pay more.

For a bar, a coffee shop, a gelateria — any venue that lives on low tickets and lots of transactions — this is the problem. Every few-euro payment leaves a disproportionate slice on the table. It’s no surprise that digital tips, when they run through the terminal, raise the same questions: we wrote about it in digital tips and the POS: the future.

Calculator: what fees cost you over a year

Enough theory. Move the sliders on the calculator below with your venue’s data — average ticket, transactions per day, open days and weeks, and the average fee you pay today (find it on your PSP’s monthly statement). The math is instant.

You’ll see two things: what you pay today over a year, and — illustratively — what you might pay under the model proposed for the digital euro. The gap, for many venues, is the surprise of the day.

Defaults reflect a mid-sized restaurant (€35 ticket, 60 transactions a day, 6 days a week). Adapt them to your real case.

Three levers to pay less (right now)

The digital euro is coming, but in the meantime you have three concrete levers to cut this line today.

1. Renegotiate and compare. Terminal terms are negotiable, especially with good volume or when you switch providers. Regulatory pressure across Europe is increasingly pushing tariffs to be comparable and capping fees on small amounts — worth understanding where it’s heading. We map it in restaurant card fees in Europe: what’s changing in 2026.

2. Pick the right tariff for your volume. If you do lots of small transactions, a fixed monthly fee with a low percentage almost always beats “no fee, high percentage.” If your volume is low, the reverse. The calculator above shows you the difference in real euros.

3. Actually read your PSP statement. It’s tedious, but that’s where forgotten charges, fees for services you don’t use, and opaque mark-ups hide. Treat it the way you treat your supplier invoice when you check food cost: line by line.

These three moves alone are often worth a few thousand euros a year. And unlike a price increase, that money doesn’t cost you a single guest.

And tomorrow: how the digital euro changes the equation

This is where the bigger game begins. The digital euro — the ECB’s public money arriving from 2027 — is designed partly to knock down this exact cost line. The European text sets a cap on fees and the “no worse-off” clause (never costlier than a comparable digital method), and makes offline payments free. The European merchants’ proposal pushes for a 0.1% model capped at 4 cents per transaction.

If that model went through, the €5 coffee that costs you €0.50 in fees today would cost under 4 cents. That’s the scenario you see simulated in the calculator. For the full picture — timeline, mandatory acceptance, exemptions — start from the digital euro and restaurants: what actually changes.

Don’t kid yourself on timing, though: the digital euro is on the runway but not around the corner (pilot 2027, scale 2029). The three levers above are still the thing to do now.

In short

Card fees are a real cost line — fragmented and almost always unmeasured. The typical range is 0.5%-2%, but on small tickets the impact explodes: on a €5 payment it can top 10%. Small merchants pay three to four times more than large ones, and across Europe the cost nearly doubled in a few years.

The good news is twofold: today you can cut this line by renegotiating, picking the right tariff, and reading your statement; tomorrow the digital euro aims to cut it by law. But it all starts with the same move — knowing your number. Use the calculator below and find out: it’s the first piece of “hidden” food cost you should watch every month, right next to all the others on your KPI dashboard. Card fees, after all, are just one side of the triangle eroding your digital margin: the other big chapter is delivery commissions, which on every order often weigh even more than these.

Coperti is the reservation and floor-management system born from the experience of people who ran a restaurant for years. We don’t process your payments, but we give you control over the numbers that decide your margins — covers, average ticket, no-shows, revenue per service — so you make cost calls on data, not on gut feel. Tell us about your restaurant: the trial is free and lasts 30 days.