CA Form 100
This form is filed with the California Franchise Tax Board (FTB) on an annual basis.
Deadline for this form has passed. Contact us if you've missed the deadline.
What Is CA Form 100?
The California Corporation Franchise or Income Tax Return serves as a tax document for corporations functioning in California.
Its purpose is to declare income, compute tax liability, and meet tax responsibilities to the state.
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Mandatory for
The CA Form 100's objective is to disclose a corporation's financial details, assess its taxable income, and establish its liability for state income tax.
Penalties
Not submitting Form 100 by date or furnishing incorrect information could lead to penalties and accrual of interest charges.
Due date
The due date varies by fiscal year-end, often falling on the 15th day of the fourth month after the fiscal year closes, April 15th for calendar year-end corporations.
FAQs
If the corporation is doing business in California, yes, regardless of where it was incorporated. A Delaware C-Corp with California operations files it.
Having a founder or employee working from the state is often enough to count. Our California Form 100 guide covers the test.
Closed books for the year: income statement, balance sheet, and the apportionment data showing how much activity sits in California versus elsewhere.
The federal return usually comes first, since Form 100 starts from federal taxable income and adjusts. More on California Form 100.
Often yes. Depending on the corporation's circumstances, schedules such as Schedule R for apportioning income across states may be required alongside the return.
Apportionment is the one that catches multi-state companies. Our California Form 100 page covers the filing.
Still have questions?
Reach out to our support team if you have any additional questions regarding filing.
