California Tax Service Center

Important Dates for Income Tax

When the due date falls on a weekend or holiday, the deadline to file and pay without penalty is extended to the next business day.

January 15, 2015

March 15, 2015

April 15, 2015

June 15, 2015

September 15, 2015

October 15, 2015

December 15, 2015

  • 2015 fourth quarter estimated tax payments due for corporations
  • State:

January 15, 2016

  • 2015 fourth quarter estimated tax payments due for individuals
  • State:
  • Federal: