Interac Debit Fees for Canadian Businesses: The Practical Guide
Understand Interac Debit merchant fees, contract pricing, contactless transactions and why debit should not be compared with credit using only a percentage rate.
Interac says merchants pay an acquirer processing fee that varies by contract. Debit pricing is often structured differently from credit, so compare the per-transaction charge, terminal and account fees together.
Why debit looks different from credit
Interac Debit moves money through Canada’s debit network and is commonly quoted with a per-transaction charge rather than the same blended percentage logic used for credit. Your processor may bundle other connection, terminal or service costs.
- Count monthly debit transactions.
- Multiply by the contracted debit fee.
- Add relevant monthly and equipment costs before comparing.
Tap, chip and mobile wallet acceptance
A customer may use an Interac debit credential by card or supported mobile wallet. The checkout experience can change, but your merchant contract remains the place to verify pricing and transaction limits.
Can a merchant surcharge Interac Debit?
Interac’s published fee guidance says merchants may not directly surcharge a cardholder for using the Interac Debit service. Québec separately prohibits merchants from adding debit or credit card fees to the advertised price.
- Do not copy a credit-surcharge program onto debit.
- Confirm discount and convenience-fee rules with the processor.
- Make every customer-facing price disclosure clear before payment.
A better quote comparison
Give each provider the same monthly debit count, credit volume, card-present mix and terminal requirement. That produces a realistic monthly model instead of comparing one debit line in isolation.
Put the comparison into practice
Compare Canadian payment processors, then calculate your effective processing rate using one complete statement period.
Frequently asked questions
Is Interac a flat fee for merchants?+
It is often presented as a per-transaction amount, but the full merchant cost can include other contracted services. Check the complete quote.
Can I add an Interac fee at checkout?+
Interac states merchants may not directly surcharge a cardholder for Interac Debit.
Check current rates and terms with the provider. KYMPAY also sells merchant services; read our editorial approach.