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Reviewed by: William McLee
Reviewed date:
January 12, 2026

What CDTFA-735 (2021) Is For

Form CDTFA-735 is used to request relief from penalties, interest, or collection cost recovery fees assessed by the California Department of Tax and Fee Administration. It applies when a taxpayer failed to file a return, pay taxes, or comply with payment requirements on time due to reasonable cause and circumstances beyond their control.

This form does not challenge the underlying tax obligation or revenue assessment. Instead, it addresses additional charges associated with late compliance for a tax return, including sales and use tax, use tax on vehicles or aircraft, and other CDTFA-administered programs.

When You’d Use CDTFA-735

A taxpayer would use CDTFA-735 after receiving a notice from the California Department of Tax and Fee Administration showing penalties, interest, or a collection cost recovery fee. The form applies when a tax return or payment was submitted late due to reasonable cause, such as disasters, bank errors, or other circumstances beyond the taxpayer’s control.

This form is commonly used for sales and use tax, use tax on vehicles or aircraft, cannabis taxes, and other CDTFA-administered programs. It is not used to dispute the underlying tax liability, but only to request relief from added charges related to late compliance.

Key Rules or Details for 2021

The California Revenue and Taxation Code governs relief under CDTFA-735 and applies only when the taxpayer exercised ordinary care but was unable to meet the filing or payment deadlines. Penalty relief is more common than interest relief, which is granted only in limited situations involving CDTFA error or declared disasters.

For 2021, special consideration applied to taxpayers affected by disasters declared as state emergencies, including winter storms and wildfires. Specific penalties, such as those involving negligence, misuse of resale certificates, or tax evasion, are not eligible for relief.

Step-by-Step (High Level)

Step 1: Review the billing notice

The taxpayer should identify which charges are being contested and confirm that the penalties, interest, or collection cost recovery fees are eligible for relief.

Step 2: Gather supporting records

Documentation should clearly support the reasonable cause claim and may include financial records, sales receipts, purchase invoices, bank correspondence, disaster notices, insurance reports, or written advice from CDTFA.

Step 3: Complete the form accurately

The taxpayer must enter the correct account number, reporting period, and a detailed explanation of what occurred, when it occurred, and how it prevented timely compliance.

Step 4: Sign the request

Most filings require a signature under penalty of perjury. An electronic signature may be submitted through CDTFA Online Services using compatible digital tools and mobile devices.

Step 5: Submit through Online Services or mail

CDTFA encourages submission through its online portal, which requires a username and password. Paper filing is permitted when online access is not available.

Step 6: Pay required amounts if necessary

Some relief requests require payment of the underlying tax, interest, or fees before CDTFA will process the request. Proof of payment should be retained.

Common Mistakes and How to Avoid Them

  • Filing CDTFA-735 before meeting relief prerequisites: A taxpayer should confirm whether CDTFA requires the base tax (and, for Collection Cost Recovery Fee relief, possibly tax, penalties, and interest) to be paid first before requesting penalty relief.

  • Using a vague “reasonable cause” explanation: A taxpayer should provide specific dates, detailed facts, and records showing ordinary care to support reasonable cause and avoid unsupported interest-relief claims unless agency error or delay can be proven.

  • Sending the request to the wrong address: A taxpayer should verify the correct CDTFA mailing address for CDTFA-735 submissions to prevent processing delays and slow account updates.

  • Confusing CDTFA penalties with those of other agencies: A taxpayer should confirm that the issue falls within CDTFA authority and not an EDD or Franchise Tax Board matter before submitting the request.

  • Omitting proof and filing/payment history: A taxpayer should attach supporting documents (payment confirmations, notices, returns filed, and timelines) so CDTFA can verify the request and narrative.

What Happens After You File

After submission, CDTFA reviews the relief request, supporting records, and the taxpayer’s account history. Requests filed through CDTFA Online Services generally process faster than paper filings, though timelines vary.

The CDTFA issues a written decision approving or denying the request and may contact the taxpayer for additional information during the review process. If relief is approved, the account will be adjusted accordingly, and interest will continue to accrue on any unpaid tax balance during the review period.

FAQs

Who can file CDTFA-735?

Any taxpayer assessed penalties, interest, or collection cost recovery fees by the California Department of Tax and Fee Administration may file CDTFA-735 if reasonable cause exists for the late filing or payment.

Does filing this form stop interest from accruing?

Filing CDTFA-735 does not stop interest from accruing on unpaid tax balances. Interest continues to accrue until the tax liability is fully paid.

Can CDTFA-735 be filed for use tax on a vehicle or aircraft?

CDTFA-735 may be used to request relief for use tax related to vehicle, vessel, and aircraft transactions administered by CDTFA.

Is online filing required?

Online filing through CDTFA Online Services is preferred because it allows for faster processing; however, paper filing is still permitted.

Does CDTFA-735 change filing frequency or grant a filing extension?

Submitting CDTFA-735 does not change filing frequency, provide a filing extension, or alter future tax obligations.

Is a tax professional required to file this form?

A tax professional is not required to file CDTFA-735, though professional assistance may be helpful for complex situations.

How long should records be kept?

Taxpayers should retain all documentation related to the relief request in case CDTFA requests verification or needs to review the audit trail.

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Frequently Asked Questions