
Finding the Right Contact for a California Tax Audit
There is no single official California audit defense number. Start with the agency and examiner shown on your notice, verify the contact through the agency’s official website, and distinguish government assistance from a private representative. These general contacts can help route an inquiry:
| Agency or Private Firm | Purpose | Phone Number |
|---|---|---|
| Franchise Tax Board (FTB) | General income-tax assistance; use the assigned examiner for an audit | 1-800-852-5711 |
| CDTFA | General tax assistance; assigned auditor or field office for audit questions | 1-800-400-7115 |
| EDD | Payroll-tax assistance; use the assigned auditor for your case | 1-888-745-3886 |
| Segal, Cohen & Landis (SCL) (private law firm) | Ask about private representation, services and fees | (310) 285-3999 — firm contact page |
Important: You may communicate with the tax agency yourself or authorize a representative under its procedures. Representation can help with a complex matter but does not guarantee a favorable result or remove every need for your participation.
Review the notice, disputed issues, supporting records and applicable procedures for the particular matter. Do not assume a particular selection probability, financial result or completion time.
Before responding, identify the requested information, tax periods and deadlines. Give accurate answers and keep copies of records and correspondence. If a request is unclear or raises a privilege or legal issue, seek clarification or advice.
Consider a qualified tax professional when the issues, deadlines or potential consequences warrant assistance. Confirm the person’s credentials and authority to act for the agency involved.
This guide explains how to locate California tax-audit contacts and evaluate representation. The correct procedure depends on the issuing agency, notice and facts.
Glossary for California audit defense number:
Understanding California State Tax Agencies and Audit Types
The IRS administers federal taxes. California state matters may involve the FTB, CDTFA or EDD, among other agencies. Their tax responsibilities and procedures differ, so identify the agency and tax type before responding.
If you receive an audit notice, review its scope and deadlines. Depending on your needs, California State Tax Resolution Services may include advice or representation within an agreed engagement.
Audits may use correspondence or meetings, depending on the agency and the issues. Common ways of gathering information include:
- Correspondence: The agency may request documents or explanations in writing. A correspondence review can cover one or several issues; follow the actual request and response deadline.
- Office Meetings: An auditor may arrange a meeting at an agency office with you or your authorized representative. The setting alone does not determine the scope of the review.
- On-Site or Other Agreed Meetings: The audit may involve examining business records at an appropriate location, discussing operations or requesting additional information. Confirm the arrangements and any representation before the meeting.
Franchise Tax Board (FTB) Audits
The FTB administers personal income taxes and corporate franchise and income taxes. An audit checks whether the return correctly reports the items under review; selection does not itself establish that additional tax is due.
Residency and domicile can affect California taxation. Residents generally report income from all sources; nonresidents can still owe California tax on California-source income. A move does not by itself establish residency status, and no single fact resolves every case. Keep records supporting your residence and income sourcing. For related discussion, see California FTB Audit.
CDTFA Sales Tax Audits
The California Department of Tax and Fee Administration (CDTFA) administers sales and use taxes and various other taxes and fees. Its audits examine whether the reported amounts are correct.
CDTFA auditors may test reported amounts against records and examine selected transactions. Discuss the proposed method and whether the supporting records or sample fairly reflect the business. Examples include:
- Markup Testing: Reviewing purchases, sales and the business’s achieved markup to test reported sales. The supporting data and assumptions matter.
- Sales Reconciliation: Comparing recorded sales and supporting payment records, including card and cash transactions, with reported taxable sales. Document legitimate differences rather than assuming every receipt is taxable.
- Sampling: Examining a sample of transactions and evaluating any errors under the applicable audit method. There is no universal three-month sample or assurance that an extrapolated result is overstated; review the period and calculations in the actual audit.
EDD Payroll Tax Audits
The Employment Development Department (EDD) audits compliance with California employment-tax requirements, including worker classification, reported wages and personal income-tax withholding. Classification is one possible issue, not the only basis for an audit.
A worker’s benefit claim can raise classification questions, but do not assume every claim triggers an audit of all workers. The applicable classification test matters: the ABC test applies in many cases, while statutory exceptions can require another test. Review the actual relationship and reporting records. An assessment can include unpaid tax, interest and applicable penalties, but the result depends on the findings. See our California EDD Audit Complete Guide.
IRS vs. California Tax Audits: Key Differences
Federal and California rules differ in assessment periods, tax treatment, collection and appeal procedures. The following table is a general comparison, not a deadline calculation for a particular notice. Exceptions, extensions and suspensions can apply.
| Audit Feature | Internal Revenue Service (IRS) | California State Agencies (FTB, CDTFA, EDD) |
|---|---|---|
| General Assessment Period | Generally 3 years after the return’s due date or filing, whichever is later; exceptions apply | FTB: generally 4 years after the original due date or later filing. CDTFA and EDD: generally 3-year audit periods, with tax-specific rules and exceptions. |
| Collection Statute of Limitations | Generally 10 years from each assessment; suspensions and extensions can apply | FTB: generally 20 years from the latest liability becoming due and payable for the tax year; statutory suspensions and exceptions apply |
| Key Appeal Venues | IRS Independent Office of Appeals; U.S. Tax Court in matters within its jurisdiction | FTB protest then OTA appeal; CDTFA administrative review then OTA where applicable; EDD petitions go to CUIAB |
| Examples of Penalties and Charges | Accuracy, Failure to File/Pay | FTB demand penalty of 25% where statutory conditions apply; other penalty and fee rules vary by agency |
| Driver’s/Professional License Suspension | Federal passport restrictions may apply to certified seriously delinquent tax debt; exceptions apply (IRS guidance) | FTB Top 500 delinquency-list rules can lead to specified license consequences after required notice |
To understand the full scope of how these state-specific rules apply to your situation, read Your Go-To Guide for the California Franchise Tax Board.
Statute of Limitations and Penalty Structures
The IRS generally has three years after a return is due or filed, whichever is later, to assess additional tax, subject to exceptions. The FTB generally has four years from the original due date or later filing. Under R&TC 18622, required federal changes generally must be reported within six months of a final federal determination; for individual personal-income-tax filers, the requirement applies when the change increases California tax. An unreported required federal change can leave assessment of the resulting California deficiency open under the applicable statute. Review FTB audit guidance and the actual account history.
California penalties have separate triggering conditions, calculations and relief standards. For example:
- A demand penalty under Revenue and Taxation Code section 19133 depends on statutory conditions, including the reasonable-cause and absence-of-willful-neglect exception; it is not automatic after every missed audit response.
- FTB Delinquent-Filing Penalty: Generally 5% of the unpaid amount for each month or part of a month, up to 25%, when the payment and extended-filing requirements are not met. Minimum penalties and entity-specific rules can affect the calculation.
- FTB Accuracy-Related Penalty: A 20% penalty can apply to the relevant underpayment for negligence or a substantial understatement, subject to the statutory conditions and exceptions. It is not automatic merely because an audit changes the return.
Fortunately, penalty relief is sometimes available. You can learn how to navigate this process in our guide on How to Get Franchise Tax Board Abatement in 5 Steps.
Data Sharing and Federal-State Mismatches
Federal and state tax agencies exchange information under applicable arrangements. A federal adjustment may affect California tax, but agency data sharing does not replace your own required reporting or guarantee an immediate state assessment.
Review the notice, disputed issues, supporting records and applicable procedures for the particular matter. Do not assume a particular selection probability, financial result or completion time.
Choosing an Appropriate California Tax Audit Contact
California does not conform to every federal tax provision. Check the California treatment of the items actually under review, including any differences in deductions, credits or income sourcing.
If you want representation, ask about experience with the relevant California agency, issue and procedure. A local telephone number alone does not establish competence, authorization or a favorable outcome. Related resource: Tax Audit Representation Near Me.
How to Find and Use a California Audit Defense Number
When you receive an audit letter, you have two primary options: contact the state agency directly to request information, or call a professional tax attorney to represent you.
Use the agency and examiner contact information on the actual tax notice. The California State Auditor performs government oversight and is not the FTB, CDTFA, or EDD taxpayer-audit contact. Verify current tax-agency contacts through official channels. Related reading: Directory of State Audit Organizations; Contact Us – California State Auditor.
Contacting State Agencies Directly
For general assistance or routing, use the official contacts below. For an existing audit, the assigned examiner or contact listed on the verified notice will usually have the case details:
- Franchise Tax Board (FTB): General income-tax customer service is 1-800-852-5711. Verify options on the official FTB contact page; for your audit, use the assigned contact. Related resource: Detailed Guide to CA State Franchise Board Contact.
- CDTFA: General customer service is 1-800-400-7115. For audit questions, contact the assigned auditor or a field office as directed on the official CDTFA contact page.
- EDD Payroll Tax: General payroll-tax assistance is 1-888-745-3886. Verify the number and service hours on the official EDD contact page; use the assigned auditor for case-specific questions.
Keep a record of contacts and provide accurate information. Before sharing sensitive documents, verify the agency and recipient through official channels. Ask for clarification when you do not understand a request.
Choosing a Representative
You may handle an audit yourself or engage an attorney, CPA, enrolled agent or other representative permitted by the relevant agency. Consider the person’s qualifications, scope of authority, services and fees; no type of representative guarantees the safest or best result.
A valid power of attorney permits representation within its authorized scope and the agency’s procedures. It does not guarantee that all direct taxpayer contact ends; lawful requests may require taxpayer participation. Related reading: California Audit Defense Lawyer: All About Hiring the Right Attorney.
Common Audit Triggers and Defense Strategies
Audits may originate from several sources, including return review, related examinations or outside information. A potential issue does not prove that a return will be selected or that additional tax is due.
Issues That May Be Examined
- High-Income Earners: Income, residency and sourcing issues can be examined. Income level or a residency change does not establish that a particular taxpayer will be selected; examination depends on the return and circumstances.
- Equity-Compensation Sourcing: Moving into or out of California can raise questions about the sourcing of employment-related income. Keep records supporting the applicable allocation; a move or award does not by itself guarantee an audit.
- Federal–California Differences: Reconcile the federal return with California adjustments and retain supporting records. A discrepancy may require explanation but does not establish that an automated review will occur.
- Cash Transactions: Maintain records of cash and other receipts and distinguish taxable from nontaxable transactions. The agency may compare the books with the return.
- Payment-Processor Records: Reconcile processor reports with your books and reported sales, documenting differences such as refunds or nontaxable receipts. A mismatch is an issue to explain, not a guarantee of an audit or additional tax.
Effective Audit Defense and Protest Strategies
For an FTB Notice of Proposed Assessment, a protest is generally due within 60 days of the notice date. CDTFA petitions for redetermination generally have a 30-day period from mailing of the notice, with tax-specific exceptions. EDD assessment petitions generally must be filed within 30 days of service or mailing, with a possible good-cause extension. Read the notice and the applicable CDTFA or EDD procedure; do not use an FTB deadline for another agency.
For an FTB assessment dispute, possible steps include:
- Filing a Timely Protest: State the grounds for disagreeing with the proposed assessment and provide relevant facts, legal arguments and supporting records under the FTB’s requirements.
- Requesting a Protest Hearing: You may request an oral hearing during the FTB protest process under its procedures.
- Considering a Tax Deposit: Interest generally continues while the FTB dispute is pending. A properly designated deposit can stop further interest on the amount covered while preserving the dispute process; a partial deposit does not stop interest on an uncovered balance.
- Appealing to the Office of Tax Appeals (OTA): An FTB Notice of Action generally permits an appeal within 30 days of its date. OTA is an independent administrative appeals body; an oral hearing may be requested. Follow the notice and OTA procedures rather than assuming a hearing automatically occurs.
For related information about this administrative appeals process, read The Ultimate Guide to California Tax Board Appeals.
Frequently Asked Questions about California Tax Audits
How long does a California FTB audit take?
There is no fixed completion time. The FTB says timing varies with complexity. Records, additional requests, disputed issues and any later protest or appeal can affect duration. Ask the assigned contact about the current stage and outstanding information; do not treat a planning estimate as a guaranteed deadline.
Can I appeal a California tax audit decision?
Yes, depending on the notice and procedure. An FTB NPA generally permits a protest within 60 days of its date, and an FTB Notice of Action generally permits an OTA appeal within 30 days. CDTFA petitions generally run 30 days from mailing of the determination, subject to tax-specific exceptions. EDD petitions generally run 30 days from service or mailing and go to CUIAB, with applicable good-cause rules.
What happens if I ignore a California audit notice?
Failing to respond can allow the agency to proceed on the available records and can forfeit a protest or appeal opportunity. The deadline and consequences depend on the notice; an initial information request is not the same as a proposed assessment. Once tax is enforceable, applicable collection tools may include:
- Bank levies or other withholding orders, subject to the agency’s procedures.
- Wage withholding under the applicable tax order and statutory limits; review the calculation and any hardship procedure.
- Tax liens that can affect property, subject to the governing law and notice procedures.
- License consequences require the applicable Top 500 delinquency-list criteria and prior-notice procedures, not merely an ignored audit notice.
- Publication on the applicable delinquent-taxpayer list only when its criteria and notice requirements are met.
Conclusion
Read a California tax-audit notice promptly, identify the agency and deadlines, and organize the requested records. You can respond yourself or seek qualified representation based on the complexity and facts; assistance does not guarantee a lower assessment or faster result.
Contact Segal, Cohen & Landis (SCL) to discuss the tax matter, relevant notices and deadlines, and available response options. Confirm the qualifications of the proposed representative and the scope of the engagement.
If you have an audit notice, track its deadlines while considering your response. You can contact our Los Angeles Tax Attorney team or review California State Tax Resolution Services to discuss services and fees. Agree on who will handle each required action.
Have questions about this topic? Talk to an IRS attorney today.
Segal, Cohen & Landis, P.C. — Beverly Hills. Serving clients nationwide.

Samuel Landis, Esq.
LL.M. (Tax) · Selected to Super Lawyers®
Sam Landis is a Beverly Hills IRS tax attorney specializing in IRS collection defense, audit representation, and international tax compliance for foreign nationals and US expats.
