Guide to online casinos accepting Insta Debit, one of the most reliable methods of funding casinos. Within seconds after you log on the banking section of any of the listed casinos you will be playing with credits from insta debit. Sign up is simple and secure, no waiting for approval.  You will be limited on the amount you can purchase with Insta Debit, however the casino of choice can have these limits raised to high amounts. Once purchase has been made, Insta Debit will deduct from you bank account within one business day. You will be charged NSF charges if the money is not ready available in your bank account. So ensure you do have funds to cover the Insta Debit transaction.