Form FTB100X Amended Corporation Franchise or Income Tax Return - California

What Is Form FTB100X?

This is a legal form that was released by the California Franchise Tax Board - a government authority operating within California. As of today, no separate filing guidelines for the form are provided by the issuing department.

FAQ

Q: What is Form FTB100X?
A: Form FTB100X is the Amended Corporation Franchise or Income Tax Return for California.

Q: Who needs to file Form FTB100X?
A: Any corporation or entity that needs to amend their original California franchise or income tax return.

Q: What does Form FTB100X amend?
A: Form FTB100X is used to amend or correct previously filed Form 100 or Form 100W.

Q: When should I file Form FTB100X?
A: You should file Form FTB100X as soon as you realize there is an error or an omission on your original tax return.

Q: What information do I need to complete Form FTB100X?
A: You will need your original Form 100 or Form 100W, as well as any supporting documentation for the changes you are making.

Q: Can I e-file Form FTB100X?
A: No, Form FTB100X cannot be e-filed. It must be filed by mail.

Q: Are there any penalties for filing Form FTB100X?
A: Penalties may apply if the amended return is filed after the due date, or if there is an underpayment of tax.

Q: Do I need to attach a check or payment with Form FTB100X?
A: If you owe additional tax with your amended return, you should include payment with the form. If you are due a refund, you do not need to include a payment.