If a credit card is being used for a transaction, SimpliSafe may obtain a pre-approval from the credit card company for an amount up to the amount of the order. Billing to your credit card occurs at the time of purchase or when the order is shipped. If the balance from a SimpliSafe Gift Card is used for a transaction, the amount is deducted from your Gift Card at the time of purchase. If the total amount of the transaction is greater than the balance available in Gift Card your credit card will be charged for the balance.</p> <p>SimpliSafe accepts the following credit cards: Visa, MasterCard, American Express, and Discover. We are unable to accept credit cards issued by banks outside of the United States.