Change your billing information in Photos for OS X and iPhoto

Photos for OS X

1. Make sure your computer is connected to the Internet.
2. Open Photos.
3. Choose Photos > Print Product Store Account.
4. On the web page that opens, click "Change your default shipping or billing info" under Account Settings.
5. Sign into your Apple ID if prompted.
6. Click the Edit button next to Payment Information.
7. Update your information, and then click Save to save your changes.

iPhoto '11 (iPhoto v9.0)

1. Make sure your computer is connected to the Internet.
2. Open iPhoto.
3. From the main iPhoto window, click a book or card from the Project section of the Source list. If you're in the Book Shelf view, double-click a book or card. 
4. Choose Buy Card or Buy Book at the bottom of the screen. 
5. Enter the quantity and select Check Out.
6. Enter your Apple ID and password and click Sign In.
7. To change your billing information, click Edit Payment. Enter any desired changes and click Continue to save your changes.

Learn more

You can change your account information on your Apple ID account page.