Form 100 is used when a corporation is required to file a California franchise or income tax return based on their fiscal year-end. It is essential for corporations with taxable income to report their earnings accurately. This form should be used annually to comply with state tax requirements.
California Income Tax Return–Form 100. If the association has more than $100 in nonmember income (e.g., interest), it is required to file a corporate income tax return with the FTB (even if it is not incorporated). Form 100 is used for this purpose, and any taxable income is taxed at a flat rate of 8.84%.