California Board of Equalization
State Board of Equalization
3321 Power Inn Road, Ste. 130
Sacramento, CA 95826

Mailing Address:
P.O. Box 942879
Sacramento, CA 94279

General tax questions: (800) 400-7115
Taxpayers’ Rights Advocate: (888) 324-2798

Regulates compliance with California state sales tax law and local sales and use tax laws.

Internal Revenue Service
Treasury Inspector General
California Offices (locations and phone numbers)

Employee Misconduct: (800) 366-4484
Tax Evasion: (800) 829-0433

Accepts complaints about IRS employees or federal income tax evasion and fraud. Reports of tax fraud can remain anonymous.