The following information is the City of Los Angeles' Tax Ordinances that cover Business Taxes and other related taxes or fees.
General Provisions 
Article 1, Chapter 1, Section 11.00 LAMC: Provisions Applicable to Business and Other Taxes
Right To Taxation
Article 1, Chapter 2, Section 21.03 LAMC: Imposition of Tax
Business Tax
Article 1, Chapter 2 LAMC: Business Tax Ordinance (Please note that the new rates for gross receipts classifications may have changed. Please go to the Know Your Tax Rates page.)
Specialized Apportionment Instructions
Other Related Taxes and Fees
Article 1.1 - Telephone, Electricity & Gas Users Tax
Article 1.3 - Commercial Tenant’s Occupancy Tax
Article 1.6 - Uniform Sales and Use Tax
Article 1.7 - Transient Occupancy Tax
Article 1.9 - Real Property Transfer Tax
Article 1.10 - Dwelling Unit Construction Tax
Article 1.13 - Residential Development Tax
Article 1.15 - Parking Occupancy Tax
Article 4.1 - Sewer Service Charge
Article 6.1 - Solid Waste Collection, Transfer, Recycling, Recovery of Waste Resources and Disposal Fee ( Sanitation Equipment Charge)