To terminate an EFT authorization agreement, you must provide written notice to the entity that you have authorized to initiate transfers from your account. The notice should be sent via certified mail, return receipt requested, or delivered in person. Once the entity receives your notice, they will stop initiating transfers from your account. However, you are still responsible for any transfers that were initiated before the effective date of termination. It is recommended that you also contact your financial institution to confirm that transfers have been stopped.