Federal Government:

• http://www.irs.gov/- Internal Revenue Service
• http://www.dol.gov/ - Department of Labor

California:

• https://www.ftb.ca.gov/ - State of California
• http://www.boe.ca.gov/cgi-bin/rates.cgi - California Sales Tax Rates/Board of Equalization

San Francisco:

• http://sfgov.org/ - City of San Francisco

Ohio:

• http://www.tax.ohio.gov/ - Ohio Department of Taxation

Colorado:

• https://www.colorado.gov/revenue - Coloradio Department of Revenue