Final answer:
Unitary taxation does not respect the separate ownership form and structure of related businesses.
Step-by-step explanation:
The type of tax concept that does not respect the separate ownership form and structure of related businesses is Unitary taxation. Unitary taxation is a method by which a state taxes an entire enterprise or group of affiliated businesses as a single entity, regardless of the separate ownership and structure of those businesses. This means that even if the businesses are separate legal entities, they are treated as a single unit for tax purposes.
On the other hand, Separate return is a tax concept that respects the separate ownership form and structure of related businesses. In this method, each business or subsidiary within a group files its own individual tax return.
Combined reporting, another tax concept, is a middle ground between unitary taxation and separate return. It requires related businesses to file a consolidated tax return that combines the incomes and deductions of the group of companies.
Nexus refers to the connection or presence of a business in a particular state, which determines whether the business has a sufficient connection to the state to be subjected to the state's tax laws and regulations.