If a decline occurs, the card's available balance is probably less than the purchase amount. You may inform the merchant of the remaining balance on the card and use another form of payment to pay the difference, subject to the policy of the merchant. Also, please be aware that some merchants - for example, restaurants, car rental agencies, salons, mail-order companies, and cruise lines - preauthorize for an amount slightly higher than your actual transaction to ensure sufficient funds for tips or incidental expenses. This amount is ""held"" until the transaction settles to your Prepaid Card. Only the amount you sign for will ultimately be deducted from your card. Use of the card at automated fuel dispensers requires that a specific minimum balance be available on the card, which is determined by the issuer of the prepaid card, in order to complete the transaction. For example, the issuer may require that there is a minimum balance of $50 on the card in order to utilize the card at an automated fuel dispenser. Again, only the actual amount spent will ultimately be deducted from the card.