California gives you an automatic filing extension through October 15, 2012. You don't need to apply for one.

Here's what you should do if you can't file by April 17, 2012:
• You are due a refund — File your return by October 15, 2012. Choose e-file and direct deposit for the fastest refund.
• You have a balance due — Pay the amount you owe by April 17, 2012 to avoid penalties and interest. You can pay online, by credit card, or by check with form FTB 3519. Then file your return by October 15, 2012. Choose e-file to ensure that we receive your return on time.
• You're not sure if you have a balance due — Use the worksheet on form FTB 3519 to figure your tax.

Extension for federal returns: The process and dates for requesting a filing extension for your federal return are different. Refer to the IRS Website for information.

Mandatory Electronic Payments – You are required to remit all your payments electronically once you make an estimate or extension payment exceeding $20,000 or you file an original return with a total tax liability over $80,000 for any taxable year that begins on or after January 1, 2009. Once you meet this threshold, all subsequent payments regardless of amount, tax type, or taxable year must be remitted electronically. The first payment that would trigger the mandatory e-pay requirement does not have to be made electronically. Individuals who do not send the payment electronically will be subject to a one percent noncompliance penalty. Electronic payments can be made using Web Pay on the Franchise Tax Board’s (FTB’s) website, electronic funds withdrawal (EFW) as part of the e-file return, or your credit card. For more information or to obtain the waiver form, go to ftb.ca.gov and search for “mandatory epay.”

Form FTB 3519 (Payment for Automatic Extension for Individuals): https://www.ftb.ca.gov/forms/2011/11_3519.pdf

Use form FTB 3519, Payment for Automatic Extension for Individuals, only if both of the following apply:
• You cannot file your 2011 return by April 17, 2012. Due to the Emancipation Day holiday on April 16, 2012, tax returns filed and payments mailed or submitted on April 17, 2012, will be considered timely. (Note: Fiscal Year Filers, your return is due the 15th day of the 4th month following the close of your fiscal year.)
• You owe tax for 2011.

IF PAYMENT IS DUE, MAIL TO:
FRANCHISE TAX BOARD
PO BOX 942867
SACRAMENTO CA 94267-0051