This gives you until October 15 to file without penalties. We give you an automatic 6-month extension to file your return.You may file Form 1040, Form 1040A or Form 1040EZ any time before the six-month extension period ends. You must make a proper estimate of your tax for the year. The IRS has extended tax deadlines for most Californian taxpayers until November 16, 2023. The California tax deadline extension covers tax filing and payment deadlines initially falling between January 21, 2024, and June 17, 2024. You can obtain a tax extension for any reason. As a result, affected individuals and businesses will have until June 17, 2024, to file returns and pay any taxes that were originally due during this period. To request an extension, go to IRS. Gov and click the "File an Extension" link.