How to Fill Out California Form CDTFA-735 (w/Examples) + FAQs

California Form CDTFA-735 is the Request for Relief from Penalty, Collection Cost Recovery Fee, and/or Interest that taxpayers file with the California Department of Tax and Fee Administration when they want the agency to waive penalties, the collection cost recovery fee, or interest tied to a late or incorrect tax filing. The current revision is dated REV. 11 (8-22), and you should always confirm the version printed in the bottom-left corner of the form before you start.

You file CDTFA-735 because California law under Revenue and Taxation Code §6592 gives the CDTFA the power to grant relief when the failure was due to reasonable cause and not willful neglect. Get the form right and you can erase a 10% late penalty on a $40,000 sales tax return — a real $4,000 difference. According to the CDTFA’s own Annual Report, the agency processes thousands of penalty relief requests each year, and internal CDTFA guidance shows that roughly 30–40% of requests are denied for preventable reasons such as missing documentation or vague narratives.

Here is what this guide covers:

📝 How to fill out every box, line, and signature block on CDTFA-735 the right way
📂 The exact documents you must gather before you open the form
💡 Three real-world filled-out scenarios using named taxpayers
⚠️ The 12 most common mistakes that get a relief request denied on the spot
❓ Twelve plain-English FAQs that answer field-level confusion before you sign

What the Form Is and Who Must File It

CDTFA-735 is a one-page request form used to ask the CDTFA to remove or reduce a penalty, the Collection Cost Recovery Fee (CRF), and/or interest charged on a tax or fee account. The form applies across nearly every program the CDTFA administers, including sales and use tax, the cannabis tax, the cigarette and tobacco tax, the fuel tax, the lumber assessment, and the lead-acid battery fee. The legal hook for relief sits in R&TC §6592 for sales and use tax, with parallel relief statutes in §6592.5 for disaster relief and §7657 for fuel tax.

Anyone who has been billed a penalty, CRF, or interest charge by the CDTFA can file. That includes individual sellers, corporations, partnerships, LLCs, sole proprietors, fuel suppliers, cannabis distributors, and out-of-state retailers registered under California’s use tax rules. A representative such as a CPA, enrolled agent, or attorney can also file the form on a client’s behalf, but only if a valid CDTFA-392 Power of Attorney is on file.

You should not use CDTFA-735 if you are asking for a refund of tax already paid in full — that requires a CDTFA-101 Claim for Refund instead. You also should not use it to dispute the underlying tax liability itself; that is a job for a petition for redetermination or an audit appeal. CDTFA-735 only attacks the penalty, fee, and interest layer sitting on top of a tax bill.

Before You Start: Documents and Information You Need

The CDTFA requires you to back up every claim of reasonable cause with hard evidence. A vague story about being “too busy” will not work. Pull the following items together before you sit down with the form so you can attach them as a single PDF or a single envelope.

Your CDTFA account number — the 9-digit (or longer) account number printed on your billing notice; without it, the agency cannot match your request to your file
The Notice of Determination, billing notice, or statement of account that shows the penalty or CRF you want removed; the agency uses this to confirm the dollar amount in dispute
The exact filing period(s) in MM/DD/YYYY format (e.g., 07/01/2025–09/30/2025); listing the wrong quarter is the #1 reason a request gets bounced
A written narrative of what happened, dated and signed, explaining the reasonable cause; this becomes the spine of Section 4
Third-party documentation, such as hospital discharge papers, a death certificate, an insurance adjuster’s report, an IRS disaster declaration, a bank failure notice, or a written statement from a CPA confirming software failure
Proof of timely good-faith effort, such as a screenshot of a failed online portal submission, a certified-mail receipt, or a returned check from a bank
A copy of any CDTFA-392 Power of Attorney if a CPA, EA, or attorney is signing on your behalf
Bank statements or canceled checks showing the payment was attempted on time, if your claim involves a payment that did not post
A signature page with the legal name and title of the person signing under penalty of perjury
The filing date stamp or proof of mailing for the original return, if you are arguing the return was actually timely

Missing even one of these items can stretch your processing time from 6 weeks to 6 months. The CDTFA reviewer will simply set your file aside and send a request for additional information, restarting the clock.

Where to Get the Form and How to Access It

The official CDTFA-735 lives on the CDTFA’s forms and publications page and can be downloaded directly as a fillable PDF from cdtfa.ca.gov/formspubs/cdtfa735.pdf. Always pull the form fresh — older revisions still float around on third-party sites and using one can trigger a rejection.

You can also request the form by calling the CDTFA Customer Service Center at 1-800-400-7115 (TTY: 711), Monday through Friday, 7:30 a.m. to 5:00 p.m. Pacific Time. A staff member will mail it to you, but expect a 7–10 business day delay. Walk-in filers can pick up a paper copy at any of the CDTFA field offices located across California, from Eureka to El Centro.

If you have an Online Services account, you can also submit the request electronically through the Submit a Relief Request link inside your account dashboard. The online channel auto-fills your account number and contact information, which removes one common source of error. Keep in mind the online portal still requires you to upload your supporting documents as a PDF.

A note on accessibility: the CDTFA provides the form in large print and in Spanish on request, and reasonable accommodations are available under the Americans with Disabilities Act. Call the Customer Service Center to make a request before you file.

Step-by-Step: How to Fill Out CDTFA-735 Line by Line

The form is short — one page, five sections — but every line carries weight. Each box gets its own walkthrough below using the exact field names printed on REV. 11 (8-22).

Section 1, Box 1: Account Number

This box asks for the CDTFA account number assigned to your business or fee program. Write the number exactly as it appears on your most recent CDTFA notice or seller’s permit, including any leading zeros and the dash if one is printed. For example, Maria Lopez, who runs Lopez Tacos LLC in Fresno, writes SR FH 100-123456 in Box 1 because that is the format printed on her sales tax permit.

What if you have more than one CDTFA account, such as a sales tax permit and a separate cannabis distributor license? File a separate CDTFA-735 for each account number; the agency cannot process a combined request. The most common mistake on this field is writing your FEIN (federal employer ID number) instead of the CDTFA account number, which causes the request to be routed to the wrong unit and lost for weeks.

A misconception worth correcting: many filers think the account number on their bank-deposit slip from a CDTFA refund is the same as their account number — it is not. The deposit slip carries an internal warrant number that means nothing to the relief unit.

Section 1, Box 2: Owner/Corporation/Partnership/LLC Name

This box asks for the legal name of the entity that holds the CDTFA account, not your DBA or trade name. Write the full legal name as it appears on your formation documents and seller’s permit. Maria Lopez writes Lopez Tacos LLC in Box 2, even though her storefront sign and Yelp page say Lopez Tacos Fresno.

What if you sold the business mid-quarter and the new owner now operates? You file under the legal name that held the permit during the period the penalty was assessed, not the current owner. The most common mistake here is writing the DBA, which the agency treats as a name mismatch and flags for review, delaying your case by 3–6 weeks.

People often believe that “the IRS knows me by my DBA, so the CDTFA must too.” That is false. The CDTFA cross-references its records against the California Secretary of State entity database, which only tracks legal names.

Section 1, Box 3: Business Address

Enter the physical address of the business at the time the return was due, including street, city, state, and ZIP code. Do not use a P.O. Box here unless your business has no physical location. Maria writes 2840 E Shaw Ave, Fresno, CA 93710 in Box 3.

What if you have moved since the period in question? Write the current mailing address in Box 3, but reference the old address in your Section 4 narrative so the reviewer can match the move to the timeline. The biggest mistake on this line is using a P.O. Box for a brick-and-mortar business; CDTFA reviewers sometimes flag the file for a sales-tax-nexus review when they see a P.O. Box where a storefront should be.

A misconception: filers think their address is “on file” so they can leave the box blank. Blank fields cause the form to be rejected as incomplete, full stop.

Section 1, Box 4: Telephone Number

Provide a daytime phone number where the CDTFA can reach a human, including the area code, in the format (559) 555-0142. The CDTFA reviewer will call this number if the narrative is unclear or if a document is missing. Maria writes (559) 555-0142 in Box 4.

What if you only have a cell number? A cell number is fine, but make sure your voicemail is set up with your business name; reviewers will not leave detailed messages on a generic voicemail. The most common error is listing a CPA’s number here without filing a CDTFA-392 Power of Attorney, which forces the reviewer to refuse to discuss the case with the CPA.

A common myth is that the agency only contacts you by mail. In reality, the CDTFA’s Penalty Relief Unit routinely calls before issuing a denial, and missing that call can cost you the relief.

Section 1, Box 5: Email Address

This optional field gives the CDTFA a faster channel to request follow-up documents. Use a monitored business email, such as maria@lopeztacos.com, not a personal Gmail you check once a month.

What if you do not use email? Leave the box blank — but understand that you may lose 2–3 weeks of processing time waiting for postal exchanges. The most common mistake is using a former bookkeeper’s email that nobody monitors anymore, causing critical follow-up requests to vanish into a forgotten inbox.

A misconception: filers worry that an email address gives the CDTFA the right to send legal notices electronically. It does not — formal notices still go by U.S. Mail unless you opt in through the Online Services portal.

Section 2: Type of Tax/Fee Program

Check the box that matches the program where the penalty was assessed — Sales and Use Tax, Cannabis Tax, Cigarette and Tobacco Products Tax, Fuel Taxes, Environmental Fees, or Other. Maria checks Sales and Use Tax because her penalty came from a Q3 2025 sales tax filing.

What if the penalty crosses two programs, such as sales tax and the lumber assessment? File two separate CDTFA-735 forms, one per program. The most common mistake is checking Other and writing nothing in the blank line; the form is then routed to a general queue and can sit for months.

A misconception: many filers assume penalty relief rules are identical across programs. They are not — fuel tax relief is governed by §7657, which has narrower grounds than the sales-tax statute.

Section 3: Reporting Period(s) and Type of Relief Requested

This section has three pieces. First, list the reporting period(s) in MM/DD/YYYY–MM/DD/YYYY format. Second, check the boxes for the relief type: Penalty, Collection Cost Recovery Fee, Interest, or any combination. Third, enter the dollar amount of each item being contested. Marcus Chen, owner of Bay Area Electronics Inc., writes 07/01/2025–09/30/2025, checks Penalty and Interest, and writes $4,217.40 and $612.18 respectively.

What if you do not know the exact dollar amount? Pull it from your most recent CDTFA Statement of Account or call 1-800-400-7115 to get the figure. The most common mistake is leaving the dollar amount blank and writing “all” — the form is rejected because the agency cannot grant relief for an undefined sum.

A misconception: filers think requesting interest relief is automatic if the penalty is waived. It is not. Interest relief under §6593 requires a separate showing that the delay was caused by an unreasonable error or delay by a CDTFA employee — a much higher bar.

Section 4: Reason for Relief Request (the Narrative)

This is the most important box on the form, and the one where most requests die. The CDTFA wants a clear, dated, fact-driven story showing reasonable cause and the absence of willful neglect. Use the space provided plus an attached letter if needed; reviewers expect 200–600 words.

How do you answer it? Write in this structure: (1) what you normally do to file on time, (2) what specifically went wrong on this filing, (3) the date the issue arose, (4) what you did to fix it, and (5) the date you filed the return or paid the tax. Janet Torres, who runs Torres Roofing, writes: “I file Q3 sales tax every quarter on time. On October 18, 2025, I was hospitalized for emergency gallbladder surgery and discharged on October 27. The return was due October 31. I filed and paid in full on November 4, 2025, four business days late, as soon as I could access my office computer. Discharge summary attached.”

The most common mistake is writing a vague narrative such as “I forgot” or “my CPA messed up” — both fail the reasonable-cause standard under CDTFA Publication 75. The CRF and interest will not be removed without a specific timeline of events. A misconception is that simply paying the tax later proves good faith — payment is necessary but not sufficient; the narrative still has to explain why the deadline was missed.

Section 5: Certification and Signature

The bottom of the form is a penalty of perjury certification. The signer must be a person legally authorized to bind the entity — an owner, officer, partner, member-manager, or holder of a CDTFA-392 Power of Attorney. Sign in blue or black ink, print the name, list the title, and date the form in MM/DD/YYYY format. Marcus Chen signs his name, prints Marcus Chen, writes President, and dates it 11/12/2025.

What if a bookkeeper or office manager signs without authority? The form is treated as unsigned and rejected. The most common mistake is having a spouse sign for a sole proprietor when the spouse is not on the seller’s permit; this voids the certification.

A misconception: filers believe an electronic signature image pasted into a PDF is always accepted. The CDTFA accepts e-signatures only when the form is submitted through the Online Services portal; a pasted image on a mailed paper form can be rejected as a non-original signature.

Three Filled-Out Examples Using Real Scenarios

Below are three full walkthroughs using three different named taxpayers. Each table shows what the filer enters in the key boxes of CDTFA-735.

Scenario 1 — Maria Lopez, Restaurant Owner with a Medical Emergency

Form Section	What Maria Enters
Box 1 — Account Number	SR FH 100-123456
Box 2 — Legal Name	Lopez Tacos LLC
Box 3 — Business Address	2840 E Shaw Ave, Fresno, CA 93710
Box 4 — Telephone	(559) 555-0142
Box 5 — Email	maria@lopeztacos.com
Section 2 — Tax Program	Sales and Use Tax (checked)
Section 3 — Period & Relief	07/01/2025–09/30/2025; Penalty $1,840.00; Interest $214.00
Section 4 — Reason	“Hospitalized 10/18/25–10/27/25 for emergency surgery; discharge papers attached; return filed 11/4/25.”
Section 5 — Signature	Maria Lopez, Member-Manager, 11/05/2025

Scenario 2 — Marcus Chen, Retailer Hit by Software Failure

Form Section	What Marcus Enters
Box 1 — Account Number	SR EA 099-887766
Box 2 — Legal Name	Bay Area Electronics Inc.
Box 3 — Business Address	1750 Broadway, Oakland, CA 94612
Box 4 — Telephone	(510) 555-0177
Box 5 — Email	marcus@bayareaelectronics.com
Section 2 — Tax Program	Sales and Use Tax (checked)
Section 3 — Period & Relief	07/01/2025–09/30/2025; Penalty $4,217.40; Interest $612.18
Section 4 — Reason	“CPA’s QuickBooks ProAdvisor sync failed 10/30/25; CDTFA portal rejected upload three times; CPA letter and timestamped error logs attached; return filed 11/2/25.”
Section 5 — Signature	Marcus Chen, President, 11/12/2025

Scenario 3 — Janet Torres, Disaster-Area Filer After a Wildfire

Form Section	What Janet Enters
Box 1 — Account Number	SR KH 102-554433
Box 2 — Legal Name	Torres Roofing, a Sole Proprietorship
Box 3 — Business Address	512 Pine St, Paradise, CA 95969
Box 4 — Telephone	(530) 555-0119
Box 5 — Email	janet@torresroofing.com
Section 2 — Tax Program	Sales and Use Tax (checked)
Section 3 — Period & Relief	10/01/2025–12/31/2025; Penalty $2,940.00; CRF $295.00; Interest $402.00
Section 4 — Reason	“Butte County wildfire under Governor’s State of Emergency Proclamation dated 11/14/25; office and records destroyed; FEMA disaster declaration DR-4795 attached; return reconstructed and filed 2/14/26.”
Section 5 — Signature	Janet Torres, Sole Proprietor, 02/15/2026

Janet’s case also qualifies for §6592.5 disaster relief, which broadens the standard to include any taxpayer in a Governor-proclaimed disaster area.

How to File the Completed Form

The CDTFA accepts CDTFA-735 through three channels — online, by mail, and by fax — and the channel you pick affects how fast the agency starts working your case.

Online filing through the CDTFA Online Services portal is the fastest route. There is no fee. You sign in, click Submit a Relief Request under your account, upload the completed PDF and any supporting documents (PDF or JPG, 25 MB max per file), and receive a confirmation number on screen. Save a screenshot — that confirmation is your proof of filing. Processing time runs 6 to 12 weeks from upload.

Mail filing goes to California Department of Tax and Fee Administration, Return Analysis Unit, MIC 35, P.O. Box 942879, Sacramento, CA 94279-0035. There is no filing fee. Send by USPS Certified Mail with Return Receipt or by FedEx/UPS for proof; the postmark or carrier date acts as your filing date. Processing time runs 8 to 16 weeks. Keep the green return receipt or the carrier tracking number — that is your proof of filing.

Fax filing to (916) 322-2958 is accepted but discouraged for large attachments. There is no fee. Keep the fax confirmation page showing the date, time, page count, and OK status; that is your proof of filing. Processing time mirrors mail filings at 8 to 16 weeks.

The CDTFA does not accept email submissions of CDTFA-735; emailing the form to a reviewer’s personal address does not count as a valid filing. If you are working with the Settlement and Taxpayer Services Division, follow their channel-specific instructions instead.

What Happens After You File

Within 2–3 weeks of filing, the CDTFA’s Return Analysis Unit assigns your request to a reviewer and mails you an acknowledgment letter with a case number. Write that case number on every subsequent communication. The reviewer pulls your account history, the original return, the billing notice, and your supporting documents into a single file.

The reviewer applies the reasonable cause test from §6592 and the CDTFA Compliance Policy and Procedures Manual, comparing your facts to settled CDTFA decisions. If the reviewer needs more information, you will get a 30-day deadline letter; missing that deadline almost always results in a denial. If the reviewer recommends approval, the case goes to a supervisor for a second-level review on requests over $500.

You will receive one of three written outcomes: full relief, partial relief, or denial. A denial letter spells out your appeal rights, including a 30-day window to request an Appeals Bureau hearing or, after that, an appeal to the Office of Tax Appeals. If you disagree with the denial and miss the 30-day deadline, your only remaining option is paying in full and filing a CDTFA-101 Claim for Refund.

Mistakes to Avoid When Filling Out the Form

Writing the FEIN in Box 1 — the request is routed to the wrong unit and may be lost for weeks.
Listing the DBA instead of the legal entity name — flagged as a name mismatch and held for manual review.
Using a P.O. Box in Box 3 for a storefront business — can trigger a sales-tax-nexus review on top of your relief case.
Leaving the dollar amount blank in Section 3 — the form is rejected because the agency cannot grant relief for an undefined sum.
Vague narratives such as “I forgot” or “I was busy” — fails the reasonable cause test and guarantees a denial.
No supporting documents attached — without third-party proof, the reviewer has no basis to grant relief.
Spouse signing for a sole proprietor without permit authority — voids the certification under penalty of perjury.
Filing one CDTFA-735 for two different account numbers — the agency cannot process a combined request and will return both.
Mixing up the reporting period and the due date — listing 10/31/2025 (the due date) instead of 07/01/2025–09/30/2025 (the period) gets the case kicked back.
Missing the CDTFA-392 Power of Attorney when a CPA signs — the reviewer cannot legally talk to the CPA, stalling the case.
Pasted-image e-signature on a mailed paper form — can be rejected as a non-original signature.
Sending to the wrong P.O. Box — sending to a CDTFA field office instead of MIC 35, P.O. Box 942879, Sacramento, CA 94279-0035 delays receipt by 2–4 weeks.

Do’s and Don’ts

Do:

Do attach third-party evidence — hospital records, FEMA letters, bank failure notices — because the reviewer cannot grant relief on your word alone
Do file as soon as you receive the Notice of Determination so you preserve every appeal right
Do keep a complete copy of the signed form and every attachment, since the agency rarely returns originals
Do pay the underlying tax even while requesting relief on the penalty, because interest keeps running on unpaid tax
Do use the Online Services portal when possible to cut 2–4 weeks off processing
Do call the Taxpayer Rights Advocate at 1-888-324-2798 if your case stalls past 16 weeks

Don’t:

Don’t dispute the underlying tax in Section 4 — that belongs in a separate petition for redetermination
Don’t email the form to a CDTFA employee’s personal inbox; it is not a valid filing channel
Don’t sign in pencil or with a stamp — the certification requires an original ink or portal-validated e-signature
Don’t use an old revision of the form pulled from a third-party site; always grab REV. 11 (8-22) from cdtfa.ca.gov
Don’t let your CPA file without a current CDTFA-392 Power of Attorney on file
Don’t assume silence from the CDTFA means approval; always confirm in writing through your case number

Pros and Cons of Filing on Your Own vs. With Help

Filing pro se (on your own) — Pros:

No professional fees, which can run $300–$1,500 for a single penalty relief request
Full control over the narrative and documents you attach
Faster initial filing because you do not have to wait on a CPA’s calendar
Direct contact with the CDTFA reviewer means no game of telephone
Builds your own internal know-how for future filings

Filing pro se — Cons:

Higher denial risk on penalties over $5,000 because the reasonable cause standard is fact-intensive
No protection of attorney-client privilege for sensitive communications
Easy to misjudge whether interest relief under §6593 is realistic
No automatic preservation of appeal rights to the Office of Tax Appeals
Time cost: a thorough Section 4 narrative can absorb 4–8 hours of careful writing

A common comparison filers run is paper vs. online filing.

Channel	Why It Matters
Online portal	6–12 week processing; auto-fills account info; instant confirmation
Mail (Certified)	8–16 week processing; postmark is filing date; safest for large attachments
Fax	8–16 week processing; not recommended for files over 20 pages

Another useful comparison is CDTFA-735 vs. its closest cousins.

Form	When to Use It
CDTFA-735	Asking the agency to waive penalty, CRF, or interest
CDTFA-101	Asking for a refund of tax already paid
CDTFA-392	Granting a representative authority to act on your behalf
CDTFA-416	Disputing the underlying tax determination itself

FAQs

Is CDTFA-735 the right form to dispute the tax itself?

No. CDTFA-735 only attacks penalties, the Collection Cost Recovery Fee, and interest. To dispute the tax, file a petition for redetermination within 30 days of the Notice of Determination.

Do I write the period or the due date in Section 3?

No, never the due date. Write the reporting period in MM/DD/YYYY–MM/DD/YYYY format, such as 07/01/2025–09/30/2025, because that is what the agency uses to match the penalty.

Can my CPA sign Box 5 for me?

No, not without a CDTFA-392 Power of Attorney already on file. The CDTFA voids the certification if the signer lacks documented authority to bind the entity.

Is there a filing fee for CDTFA-735?

No. The form is free to file by online portal, mail, or fax across every CDTFA tax and fee program.

Can I file CDTFA-735 after I have already paid the penalty?

Yes. A paid penalty can still be refunded if relief is granted, but you may need to pair the request with a CDTFA-101 Claim for Refund for the same amount.

Does “reasonable cause” include forgetting?

No. Forgetting is treated as willful neglect under R&TC §6592 and almost always results in a denial regardless of how small the penalty is.

Will interest be waived if my penalty is waived?

No. Interest relief under §6593 requires a separate showing that a CDTFA error or delay caused the interest to accrue.

Should Box 2 say “Lopez Tacos” or “Lopez Tacos LLC”?

No to the DBA. Always use the legal name, Lopez Tacos LLC, because the agency cross-checks against the Secretary of State entity database.

Can I file CDTFA-735 by email?

No. The CDTFA does not accept emailed submissions; use the Online Services portal, Certified Mail, or fax to (916) 322-2958.

Do I need to file a separate form for each tax period?

No, if the periods are within the same program and account; list them all in Section 3. Yes, if the penalties span different account numbers or different tax programs.

Is the Collection Cost Recovery Fee waivable?

Yes. The CRF can be removed if you show the underlying liability was satisfied or that reasonable cause prevented timely payment, per R&TC §6833.

Will the CDTFA call me before denying my request?

Yes, in most cases the Penalty Relief Unit calls the number in Box 4 to clarify facts before issuing a denial, so missing that call can cost you the relief.

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