Subway gift card holders can reload the cards online at MySubwayCard.com or on the Subway app. Users create an account online to register the gift card and access account information to add money. Reloading online or with the app requires a credit card.
Subway limits the value of any one Subway card to $500 at a time. Users can check the balance online using the PIN number, which is printed on the card under a scratch-off silver box. Users also have the option of combining the balances of two or more cards, as long as all cards are registered to the same user.