All LLCs classified as corporations that organize in California, register in California, conduct business in California, or receive California source income, must file California Form 100. The California Form 100 must be filed by the 15th day of the third month after the close of the LLC’s taxable year.
The shelf LLC will be taxed at the corporate tax rate of 8.84 percent and will be subject to a minimum tax of $800.
All LLCs classified as partnerships or disregarded entities that organize in California, register in California, or conduct business in California, must file California Form 568 Limited Liability Company Return of Income. California Form 568 must be filed by the 15th day of the fourth month after the close of the LLC’s taxable year.
An LLC required to file Form 568 pays an annual tax of $800, and may be subject to a fee based on total annual gross worldwide income. The annual tax is due by the 15th day of the fourth month of the taxable year, and is paid using CA Form 3522.
http://www.ftb.ca.gov/forms/2008/08_3522.pdf CA Form 3522
In addition, an LLC filing Form 568 that has members that are not residents of California must file the agreements of those non-resident members acknowledging that California may tax them and may collect tax from them, agreeing to file a California return and pay tax on the members’ share of California source income of the California Shelf LLC. For any non-residents that do not sign an agreement, the LLC must pay tax on the nonresidents’ share of LLC income.