We give you an automatic 6-month extension to file your return. If you are residing or traveling abroad on April 15, California law allows you an additional two months to file your return.Editor's note: The IRS announced that the deadline is now Nov. The California tax deadline extension covers tax filing and payment deadlines initially falling between January 21, 2024, and June 17, 2024. The deadline was previously extended to May 15 on January 10 and didn't include Contra Costa. But that changed the following day. Application for Extension of Time to File Brief (Civil Case). APP-007, Request for Dismissal of Appeal (Civil Case). Filing electronically through the IRS' Free File program is one way to make this tax season easier to handle. How long does it take for the Court to process an efiled document?