Final answer:
Proposed Treasury Regulations are proposed rules, Temporary Treasury Regulations are issued to provide temporary guidance, and Final Treasury Regulations are the official interpretation and application of tax laws.
Step-by-step explanation:
Proposed Treasury Regulations: Proposed Treasury Regulations are proposed rules and regulations issued by the Department of the Treasury to provide guidance on the interpretation and application of tax laws. These regulations are open for public comment and are not legally binding until they are finalized.
Temporary Treasury Regulations: Temporary Treasury Regulations are regulations that are issued by the Department of the Treasury to provide temporary guidance on tax laws. They are typically issued to address urgent or rapidly changing tax issues and have the same force and effect as final regulations.
Final Treasury Regulations: Final Treasury Regulations are regulations that represent the official interpretation and application of tax laws. They are the result of the Treasury Department's review of public comments on proposed regulations, and they have the force of law.