2016 Tax Return Due Dates for Business

Currently, and for Tax Year 2015, Partnership returns are due the 15th of the 4th month following the end of the fiscal year. Beginning with tax returns for 2016, the due date will be the  15th day of the 3rd month following the end of the fiscal year. A maximum six-month
extension will be allowed.

C Corporation tax returns are currently due the 15th of the 3rd month following the end of the fiscal year. Beginning with tax returns for 2016, these tax returns will be due the 15th of the 4th month following the end of the fiscal year. Rules for extensions will also change
beginning with tax year 2016.

S Corporation tax returns are currently due the 15th day of the 3rd month following the end of the fiscal year. These due dates will not change.