Definition: In this task, you are given a summary for US Congressional and California state bill, your task is to generate a Title for this bill. The preferred titles are under forty words and mention the purpose of the bill.
Input: Business Activity Tax Simplification Act of 2006 - Expands the federal prohibition against state taxation of interstate commerce to: (1) include taxation of out-of-state transactions involving all forms of property, including intangible personal property and services (currently, only sales of tangible personal property are protected); and (2) prohibit state taxation of an out-of-state entity unless such entity has a physical presence in the taxing state. Sets forth criteria for determining that a person has a physical presence in a state.
Output:
A bill to simplify the taxation of business activity, and for other purposes.