Once a Boost is added to your Cash Card it doesn’t expire. An active Boost will be valid until you remove it from your card. That said, We are always testing different Boosts so we can provide our customers with the most value possible. We will frequently add new Boosts and deprecate old Boosts. If a Boost is deprecated and is actively selected on your Cash Card you will be prompted to confirm that you want to swap it out in the app and you will be notified that it is not a current option in the carousel.