CDTFA-416 REV 2026

Definition and Meaning

The CDTFA-416 REV is a Petition for Redetermination form issued by the California Department of Tax and Fee Administration (CDTFA). This document is primarily used by taxpayers who wish to contest notices of amounts due, including Notices of Determination and Jeopardy Notices. It provides a mechanism for taxpayers to appeal these amounts with the CDTFA by formally objecting and potentially modifying the assessed tax or fee liabilities. By submitting this form, individuals and businesses initiate a process to contest discrepancies and seek adjustments or redeterminations of their tax obligations.

Step-by-Step Instructions

1. Identify the Reason for Appeal: Begin by specifying the nature of the dispute, referencing any notices received.
2. Fill Out Taxpayer Information: Include all necessary identification details, making sure they match those used in the original filings.
3. State the Petition Basis: Clearly articulate the reasoning behind the appeal, being as detailed and factual as possible.
4. Attach Supporting Documents: Gather and attach all necessary documents that support the petition, such as previous tax filings or correspondence with the CDTFA.
5. Review and Submit: Carefully review all provided information for accuracy before submitting the form to the proper CDTFA office.

Detailed Instructions for Each Section

• Part I - Taxpayer Information: Include the taxpayer’s full name, mailing address, contact number, and email, if applicable.
• Part II - Determination Details: Specify the type of determination being contested, the notice number, and the tax period(s).
• Part III - Basis for Redetermination: Provide an explanation of any errors in the determination or reasons for dispute. Include statutory references or factual mistakes where relevant.
• Part IV - Requested Action: Clearly state the action sought by the taxpayer, such as a full re-assessment or specific corrections.
• Part V - Signature and Date: The petitioner must sign and date the form, certifying the accuracy and completeness of the information provided.

Key Dates to Remember

• Initial Filing Deadline: Typically, the petition must be filed within 30 days from the date on the notice of determination or assessment.
• Extension Requests: While possible, requests for extensions must be made in writing and are assessed on a case-by-case basis.
• Response Timeframes: After submission, the CDTFA will respond, sometimes with a request for additional documentation, within a designated period.

Suggested Documentation

• Copies of the Original Notice(s): Ensure that all correspondence from the CDTFA related to the case is included.
• Tax Returns or Financial Statements: These can corroborate discrepancies in the original determination.
• Evidence of Payment or Other Financial Records: All records supporting the petitioner’s claims should be compiled and attached.

Considerations for Legal Procedures

• Formal Petition: Acts as a legal petition, requiring honest and accurate information for consideration.
• Non-binding Outcome: While a petition doesn't guarantee changes in the assessed tax amount, it opens a dialogue with the CDTFA.
• Potential for Interest Accrual: Filers should be aware that interest may continue to accrue on any disputed unpaid amounts during the appeal process.

Different Ways to Submit

• Online Submission: For quick and efficient processing, forms can be submitted through the CDTFA's online portal.
• Mail: Traditional hard copy submissions can be sent to the designated CDTFA address for those who prefer or require paper filing.
• In-Person Delivery: Some may choose to deliver their submission directly to a local CDTFA office for added assurance of receipt.

By following these guidelines and using the CDTFA-416 REV form accurately, taxpayers can engage with the CDTFA in a constructive dialogue to resolve concerns about tax determinations.