Interac e-Transfer lets you send money from your Canadian bank account through your bank's online or mobile banking. You only need the recipient's email address or mobile number, and the money moves without sharing your card details with the casino.
At a regulated Ontario casino, a deposit starts in the cashier: you choose Interac and follow the site's instructions, then approve the transfer in your bank's app or website. Withdrawals go the other way, with the casino sending the funds back to you, and if you have Autodeposit set up they land in your account automatically. Without Autodeposit you accept the money using the link in the notification.
Fees are set by your own bank or credit union, and Interac notes that institutions can change their service plans and fees at any time, so check your plan. Interac does not publish a universal limit; your bank sets sending limits and the casino sets its own minimums and maximums in its cashier. iGaming Ontario also points out that every financial institution has its own rules for igaming transactions, so it is worth confirming your bank allows them before you rely on this method (iGO FAQs).
If a transfer asks for a security question, never send the answer by email or text.
Source: www.interac.ca