Why does the amount shown in Passbook not match the amount on my credit card statement?

You might see different transaction amounts from locations such as restaurants, gas service stations, hotels and car rental companies because the amount shown in Passbook is the initial authorization amount and this might be different from the final transaction amount. For example, Passbook may display the amount a restaurant submitted initially before you added a tip when you signed your receipt. Always refer to your Alliant Credit Card or Checking Account statements for final transaction details.