File California Form 540
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California Individual Resident Income Tax Return (Long)
California Form 540 is the most complete version of the state’s individual resident income tax return. Before you start and complete the Form 540, you must complete your federal income tax return. Also, make sure you complete and mail the form and make the payment before April 16, 2015, even if you mail it by April 17, 2015 the tax return will be still considered timely due to Emancipation Day holiday.