There are no hidden fees when you come to using Interac. Interac is upfront about any fees you have to pay. However, the fees with Interac are generally very low, which is one of the reasons why Interac has become such a popular way to fund a betting account. Importantly, many betting sites will not charge a fee for your to deposit and withdraw funds, meaning the only fees you will usually have to pay will be charged by the different financial institutions, so check with yours to see whether fees will apply, and how much they could be.