Do all Canadian online casinos accept Interac Online?

Only RBC Royal Bank of Canada, TD Canada Trust, First Nations Bank and a few dozen credit unions support Interac Online.

How can I know if a casino offers Interac Online?

A casino will usually list the accepted banking methods within the terms and conditions of the website.

What is the difference between Interac Online and e-Transfer?

Interac e-Transfer transfers funds from one account to another, whereas Interac Online uses a different payment method.