Have Tax Questions? Ask a Tax Expert for Answers ASAP
Hello and thank you for using Just Answer,Most states in the US require but they are all allowed to adopt their own regs.Deloitte has published the following is excellenthttp://www.deloitte.com/assets/Dcom-UnitedStates/Local%20Assets/Documents/Tax/us_tax_Mandatory%20Unitary%20Combined%20Reporting%20Regimes_020513.pdf
good article. thank you.