Return Due Date
2017 Annual Income Tax Return with Extension Mon, Oct 15, 2018
4th Quarter, 2018 Estimate Tue, Jan 15, 2019
2018 Annual Income Tax Return Mon, Apr 15, 2019

The due date(s) shown above apply to your Federal tax filings. Most states follow the federal due dates, however, you should check with your state's tax department to be sure. Due dates for Local tax estimates / returns may differ — you should check with your local tax authority.