Why is there a hold on my account from a gas station?

The gas station may place a temporary hold on your available balance of up to $75 or more. The merchant will release the temporary hold when the transaction has been paid and replace it with the actual amount of your gasoline purchase. If applicable, the pump will automatically stop dispensing gasoline when the purchase reaches your card account balance. To avoid this hold, pay inside and tell the cashier exactly how much you want to spend.