California Assembly Bill 897, which becomes effective tomorrow, January 1, 2008, allows an organization with 501(c)(3) tax-exempt status to request California affirmation of tax exemption by sending the Franchise Tax Board a copy of its IRS determination letter.  An organization may request California affirmation of federal exemption by filing new Form 3500A, Affirmation of Internal Revenue Code Section 501(c)(3) with the IRS determination letter attached.  There is no application fee.

Read more here.

Form 3500A can be found here.