Uniform Commercial Code (UCC): Primary commercial law framework in the US, particularly Article 2 governing sales transactions and commercial paper
Internal Revenue Code: Federal tax regulations specifying invoicing requirements and documentation for tax reporting purposes
Sarbanes-Oxley Act: Regulations for public companies regarding financial documentation and internal controls
Export Administration Regulations (EAR): Federal regulations controlling the export and import of commercial items and technology
International Traffic in Arms Regulations (ITAR): Regulations controlling defense-related articles and services on the United States Munitions List
State and Local Tax Laws: Various state and local requirements for sales tax collection and documentation on commercial invoices
Federal Acquisition Regulation (FAR): Regulations for government procurement and contracting, including specific invoicing requirements
Truth in Lending Act: Federal law requiring clear disclosure of lending terms and costs in financial documents
Fair Credit Billing Act: Law governing billing practices and error resolution procedures in credit transactions
E-SIGN Act: Law ensuring the legal validity of electronic signatures and records in commercial transactions
Federal Trade Commission Regulations: Consumer protection regulations affecting commercial transactions and documentation requirements
Customs Regulations: Requirements for documentation of international commercial transactions and cross-border trade
