Interchange fees, explained from A to Z

What interchange actually is, and who gets the money

Strip a card payment to its skeleton and three fees remain. The largest, interchange, is set by Visa, Mastercard and the other networks but paid to the bank that issued the customer's card. The network keeps its own much smaller assessment fee. Whatever your provider charges above those two is the processor markup, the only part that varies between providers.

Interchange exists, in the networks' framing, to compensate issuers for fraud risk, the interest-free float between purchase and payment, and the cost of running card programs. It is also, not coincidentally, what funds the rewards points on premium cards. When a customer taps a high-end travel card at your counter, the richer rewards on that card are financed by the higher interchange you pay to accept it.

The essential fact for merchants: interchange is non-negotiable and universal. Every acquirer in Canada pays the same published schedules. A provider claiming to discount interchange itself is describing something else, usually a temporary subsidy from its own markup.

The three dials that set the rate on every transaction

• The card. A basic consumer credit card carries lower interchange than a premium rewards card, which carries less than a corporate or business card. Debit is its own world: in-person Interac debit in Canada is priced as a flat fee of a few cents per transaction rather than a percentage, which makes it dramatically cheaper on large tickets.

• The acceptance method. A card physically tapped or inserted produces a chip cryptogram that proves it was present, so it earns the lowest rates. The same card keyed into a virtual terminal or typed into a website is card-not-present, carries more fraud risk, and is priced accordingly higher.

• The merchant category. Networks publish different schedules by industry, recognized through your merchant category code (MCC). Groceries, gas, charities and a handful of other categories have their own programs, which is one reason an incorrect MCC quietly costs money.

Stack the dials and the spread is wide. A tapped Interac debit purchase might cost a few cents flat; a keyed foreign premium credit card can cost over ten times as much in percentage terms on the same ticket.

What Canada has done about interchange

Canadian interchange is shaped by voluntary commitments the networks made to the federal government. Visa and Mastercard first committed to an average effective consumer credit rate of 1.5 percent in 2015, tightened to 1.4 percent in 2020. In 2023, the government announced a further agreement reducing interchange for qualifying small businesses, cutting in-store consumer credit rates for eligible merchants to below 1 percent on average, with reductions the announcement valued at roughly a billion dollars over five years.

Two footnotes matter. The commitments cover consumer credit averages, so corporate cards, premium tiers and card-not-present transactions still range well above the headline number. And the small-business reductions apply to merchants under annual volume thresholds per network, so growing past the threshold changes your rates.

The Code of Conduct for the Payment Card Industry in Canada adds the merchant-facing protections: providers must disclose pricing clearly, give notice of fee increases, and allow penalty-free cancellation when rates rise. Together, the commitments and the Code are why a Canadian statement is more governed than most merchants realize, and why reading it is worth the ten minutes.

How merchants legally reduce interchange

Prefer card-present. Every transaction that taps instead of being keyed earns the card-present rate. For businesses doing phone orders out of habit, moving customers to a payment link or hosted page does not change the interchange category by itself, but it eliminates keying errors and enables the fraud tools that stop expensive disputes.

Welcome debit. Interac's flat per-transaction pricing means a $500 in-person sale on debit can cost cents where the same sale on premium credit costs several dollars. Nothing about that requires steering; simply never discouraging debit is enough for the mix to work in your favour.

Submit Level 2 and Level 3 data on B2B cards. Corporate and purchasing cards qualify for lower interchange programs when transactions carry enhanced data: tax amounts, invoice numbers, line items. For wholesale and B2B merchants the difference is material and most never claim it.

Verify your MCC. If your business is classified under the wrong category code, you may be paying a schedule that does not apply to you. It is set at onboarding and worth confirming.

And measure everything through your effective rate. Interchange optimization only shows up in total fees divided by total volume; that number, tracked monthly, is how you know whether any of this is working.

Why your pricing model decides whether you can even see interchange

On an interchange-plus statement, interchange appears at cost, line by line, with the processor's markup separate. You can watch the network component move with your card mix and hold your provider accountable for only the part it controls.

On blended and tiered statements, interchange is invisible. One rate, or three opaque buckets, absorb network cost and markup together, and when the blended rate rises you cannot tell whether the networks moved or your provider did. It is the difference between an itemized invoice and a single number on a napkin.

This is why RapidCents prices on interchange-plus and why Fee Check exists: upload a statement and it separates the interchange you must pay from the markup you do not have to, which is the entire honest conversation about processing cost in one report.