Ready to register in California? Apply for your California sales tax permit online – it only takes a few minutes.
California CDTFA Contact Information
Need to reach the California Department of Tax and Fee Administration? Here are all the ways to get help.
Main Contact Information
| Customer Service Center | 800-400-7115 |
| TDD/TTY | 800-735-2929 |
| Hours | Monday – Friday, 8:00 AM – 5:00 PM (Pacific) |
| Website | cdtfa.ca.gov |
| Online Services | onlineservices.cdtfa.ca.gov |
Mailing Address
California Department of Tax and Fee Administration
P.O. Box 942879
Sacramento, CA 94279-0001
Major Field Offices
Los Angeles: 300 S. Spring Street, Suite 9501, Los Angeles, CA 90013
San Francisco: 121 Spear Street, Suite 460, San Francisco, CA 94105
San Diego: 1350 Front Street, Suite 5024, San Diego, CA 92101
Sacramento: 450 N Street, Sacramento, CA 95814
Fresno: 2550 Mariposa Mall, Room 2000, Fresno, CA 93721
Online Services Available
- Apply for a Seller’s Permit
- File and pay sales tax returns
- Update business information
- View account history
- Request copies of permits
Forms and Publications
- CDTFA-400: Sales and Use Tax Return
- CDTFA-230: General Resale Certificate
- CDTFA-101: Registration Application
Access at: cdtfa.ca.gov/formspubs
Related California Guides
Rates and Fees – Current California sales tax rates.
Business Licensing – Other licenses your business may need.