What does Public Law 86-272 provide definitions for?

Public Law 86-272 specifically addresses the issue of nexus in relation to state income tax and interstate commerce. The law provides definitions that clarify when a business has established a sufficient connection or "nexus" with a state, which would make it subject to that state's income tax.

The essence of Public Law 86-272 is to delineate the boundaries for income tax liability, especially focusing on businesses engaging in sales across state lines without physical presence in the state. It primarily applies to the sale of tangible personal property rather than intangible items or services, such as stocks, bonds, or professional services.

The inclusion of various aspects related to the definitions of nexus for sales of stocks and bonds, as well as medical and legal services, may arise from broader interpretations or discussions around nexus, but the core of Public Law 86-272 remains focused on income tax implications related to interstate sales of tangible goods.

Thus, the law provides vital guidance concerning the limitations on state income tax authority and clarifies what establishes nexus in the context of retail sales, making the correct choice comprehensive as it encapsulates the broad implications of nexus definitions related to income tax liabilities.