Access Bloomberg BNA Tax & Accounting's expert-written analysis and news on state tax transactions and topics affecting unitary businesses. Find practical state tax research on unitary business topics, such as constitutional limitations on the unitary business concept, Multistate Tax Commission regulations, combined reporting, state-by-state analysis of the unitary principle, and more. Access Bloomberg BNA Tax & Accounting's detailed analysis, practice tools, source documents, and working papers to help you with any transaction.