What Is Interac?
Bank TransferInterac is Canada's national debit and money transfer network, used by virtually all Canadian financial institutions. Interac e-Transfer enables instant bank-to-bank payments, while Interac Debit processes billions of in-store and online debit transactions annually. It is the most trusted and widely used payment method in Canada.
How It Works
1. **Customer selects Interac**: At online checkout, the customer selects Interac as their payment method, or in-store, they tap/insert their Interac debit card. 2. **Bank redirect (online)**: For online payments, the customer is redirected to their bank's secure online banking interface. 3. **Authentication**: The customer logs into their bank account and authorizes the payment using their banking credentials. 4. **Fund transfer**: The payment is processed through the Interac network, debiting the customer's bank account. 5. **Confirmation**: The customer is redirected back to the merchant's site with a payment confirmation. For e-Transfer, the recipient receives a notification. 6. **Settlement**: Funds are settled to the merchant, typically in real-time for in-store Interac Debit and within minutes to hours for e-Transfer.
Key Details
Instant (e-Transfer)
Free for consumers, ~$0.50-$1 for business
$25,000 per e-Transfer (varies by bank); no practical limit for Interac Debit
1 countries
Pros & Cons
- Near-universal adoption in Canada — virtually every Canadian bank account supports Interac, making it the most broadly accessible payment method in the country.
- Extremely low transaction costs for Interac Debit ($0.005-$0.01 in-store) compared to percentage-based credit card fees, saving merchants significantly on higher-value transactions.
- Interac e-Transfer enables instant bank-to-bank payments with no card networks involved, reducing fraud risk and eliminating chargebacks.
- Strong consumer trust — Interac is operated by Canadian financial institutions and is deeply embedded in the Canadian banking experience.
- Canada only — Interac does not support international transactions, non-CAD currencies, or customers outside the Canadian banking system.
- Online Interac payments require a bank redirect, which adds friction to the checkout flow compared to card-on-file or one-click wallet payments.
- Limited recurring payment support — Interac does not natively support subscription billing in the same way cards or direct debit schemes do.
- Online Interac transaction fees ($0.50-$1.00) are higher than in-store Interac Debit, narrowing the cost advantage versus cards for smaller online purchases.
Use Cases
- Canadian e-commerce merchants offering Interac as a payment option to capture customers who prefer debit over credit.
- High-value purchases (furniture, electronics, travel) where flat Interac fees save substantially versus percentage-based card fees.
- Peer-to-peer marketplaces and classifieds where Interac e-Transfer is the standard payment method between Canadian buyers and sellers.
- Service businesses (contractors, freelancers, professionals) using Interac e-Transfer for invoice payments from Canadian clients.
- In-store retail across Canada where Interac Debit and Interac Flash (contactless) are the most commonly used payment methods.
Interac is the backbone of Canadian payments. Owned by a consortium of Canadian financial institutions, Interac operates the country's debit card network and its real-time money transfer system, Interac e-Transfer. Together, these services process billions of transactions each year and are used by virtually every Canadian with a bank account. For merchants targeting Canadian consumers, understanding and accepting Interac is essential.
## Interac Debit
Interac Debit is Canada's debit card network, analogous to what Visa Debit and Mastercard Debit are in other markets — but with much higher market share. Canadian debit cards issued by banks are overwhelmingly Interac-branded, and Canadians use debit for a higher proportion of retail transactions than consumers in most other developed countries. In-store, Interac Debit works through chip-and-PIN or contactless (Interac Flash) at point-of-sale terminals. Online, Interac Online allows customers to pay directly from their bank account during e-commerce checkout, authenticating through their online banking interface.
The cost structure for Interac Debit is dramatically different from credit card processing. Interac charges a flat fee per transaction — typically around $0.005 to $0.01 for in-store transactions — rather than a percentage of the transaction value. This makes Interac Debit by far the cheapest electronic payment method for Canadian merchants, especially for larger transaction amounts where percentage-based credit card fees become significant.
## Interac e-Transfer
Interac e-Transfer is Canada's real-time bank-to-bank payment system. It allows anyone with a Canadian bank account to send money to anyone else using just an email address or phone number. The sender initiates the transfer through their bank's online or mobile banking app, and the recipient receives a notification to deposit the funds into their bank account. With Autodeposit enabled, the funds arrive instantly without the recipient needing to take any action.
For businesses, Interac e-Transfer has evolved beyond peer-to-peer payments. Interac e-Transfer for Business allows companies to send and receive payments, and the system now supports request-to-pay functionality where businesses can send payment requests that customers fulfill through their banking app. This is increasingly used for invoicing, bill payment, and smaller merchant transactions.
## Fees for Merchants
Interac Debit's flat-fee model is its biggest advantage for merchants. In-store transactions cost approximately $0.005-$0.01 per transaction. Online Interac transactions through payment processors cost more — typically $0.50-$1.00 per transaction — but are still cheaper than credit card percentage-based fees for most transaction amounts above $20-30. Interac e-Transfer costs vary by bank but are typically free for consumers (for standard transfers) and $0.50-$1.50 per transaction for business accounts.
## Integration for Online Merchants
Online Interac acceptance is available through several PSPs. Stripe supports Interac payments for Canadian merchants, allowing customers to pay via Interac Online through Stripe's checkout flow. Adyen also supports Interac for merchants selling to Canadian customers. The checkout experience typically redirects the customer to their bank's online interface for authentication, after which they are returned to the merchant's site with a payment confirmation.
## Market Position
Interac is not just popular in Canada — it is dominant. Over 300 financial institutions participate in the Interac network, covering virtually 100% of Canadian bank accounts. Canadians used Interac for over 19 billion transactions in 2023. For any business with a significant Canadian customer base, accepting Interac (particularly Interac Debit) is not optional — it is expected.
The limitation is geographic. Interac is exclusively Canadian. It does not work outside Canada, does not support non-CAD currencies, and cannot be used for cross-border transactions. Merchants selling internationally need separate payment methods for non-Canadian customers.
