When should I file my Arizona State Corporation Tax Return?
Arizona Department of Revenue states that "Corporation tax returns are due by the 15th day of the fourth month following the close of the taxable year.
If the taxpayer has a valid federal or Arizona extension, file the return by the extended due date. If the taxpayer files under extension, the taxpayer must check the extension box on page 1 of the return."
Last edited by TaxGuru : 12-09-2008 at 11:45 PM.