Checking the status of your California state refund is a simple process that can be done online, by phone, or by mail. To check your refund status online, you will need to visit the California Franchise Tax Board website and enter your Social Security number and zip code. You can also check your refund status by phone by calling the California Franchise Tax Board at 1-800-852-5711. To check your refund status by mail, you will need to send a written request to the California Franchise Tax Board at the following address:
California Franchise Tax Board
PO Box 942849
Sacramento, CA 94249-0038