What to Do When You Receive a CDTFA Audit Notice

Receiving a California Department of Tax and Fee Administration (CDTFA) audit notice is unsettling. For most business owners, it's the first indication that a formal review of their sales tax records is coming — and the instinct is often to either panic or ignore it and hope it goes away.

Neither approach works. What does work is understanding exactly what the notice means, what comes next, and how to protect your interests from day one.

What the CDTFA audit notice actually means

A CDTFA audit notice is a formal communication informing you that your business has been selected for a sales and use tax examination. The CDTFA has authority to audit any business registered to collect sales tax in California, and selection can happen for a variety of reasons — some targeted, some random.

The notice will typically include:

• The name of the assigned auditor and their contact information
• The audit period under examination (usually three years or twelve quarterly filings)
• A request for your initial appointment
• A general list of records you'll be expected to produce

Receiving this notice does not mean the CDTFA has already determined that you owe money. It means they are opening an examination. What happens from here depends heavily on how you respond.

Step 1: Do not contact the CDTFA on your own — yet

Your first instinct may be to call the auditor and explain yourself, or to start pulling records and sending them in. Resist both.

Anything you say to the auditor — including informal phone conversations — can be used to shape the scope and direction of the audit. Auditors are professional examiners. They know what questions to ask and how to use your answers. Without preparation, well-meaning responses can inadvertently open up new areas of inquiry or make your case harder to defend.

Before you contact the auditor, consult with a California sales tax professional. Even a single call with a consultant before your first conversation with the CDTFA can significantly change the outcome.

Step 2: Note the audit period and do not destroy records

The audit notice will specify the years under examination. Do not discard, alter, or "clean up" any records related to that period. Destroying records — even inadvertently — can result in adverse inferences against you and may constitute obstruction.

If your record retention hasn't been perfect, that's a conversation to have with your representative before the audit begins, not something to try to solve by removing documents.

Step 3: Gather and review your records

Start assembling the records you're likely to need, including:

• Sales tax returns filed for the audit period
• General ledger and sales journals
• Purchase records and invoices
• Resale and exemption certificates
• Point-of-sale system data or sales reports
• Bank statements

Before turning anything over, a qualified representative will review these materials to understand where exposures might exist and how best to present the records. What you produce, and how you produce it, matters.

Step 4: Request a postponement if you need time

You are generally entitled to request a postponement of the initial audit appointment. This is routine and not viewed negatively. It gives you time to retain representation and prepare properly.

Your representative can make this request on your behalf and establish a working relationship with the auditor from the beginning — which is often better than having you appear alone at an initial meeting.

Step 5: Retain a California sales tax representative

A CDTFA audit is a specialized process. General CPAs and business attorneys, while skilled in their areas, often lack the specific knowledge of CDTFA procedures, audit methodologies, and California sales tax law needed to defend an audit effectively.

A California sales tax consultant who works exclusively on CDTFA matters will:

• Manage all communication with the auditor
• Review your records before they're produced
• Identify legitimate deductions, exemptions, and credits the auditor may overlook
• Dispute audit methodologies that produce inflated assessments
• Negotiate the final assessment amount
• Advise on your appeal rights if the result is unfavorable

The earlier you retain representation, the more options you have. Once an audit moves into advanced stages, some doors close.

What happens if you ignore the notice?

Ignoring a CDTFA audit notice is one of the most costly mistakes a business owner can make. If you fail to respond, the CDTFA will proceed without your input — and they will estimate your liability using the most unfavorable assumptions available to them. This can result in an assessment far larger than what an actual examination of your records would produce.

In some cases, the CDTFA may issue a notice of determination based solely on broad estimates, allowing them to immediately begin collection action without the normal procedural steps. Liens, levies, and bank account freezes can follow.

Common mistakes businesses make after receiving an audit notice

Producing too many records. You are only required to produce records relevant to the audit period and scope. Over-producing can invite additional scrutiny.

Communicating informally with the auditor. Casual conversations about your business operations can expand the audit scope. All communication should be deliberate and, ideally, in writing through your representative.

Assuming the auditor's methodology is correct. CDTFA auditors use estimation techniques when complete records aren't available. These techniques are not infallible and can often be challenged.

Waiting too long to get help. The earlier you engage a representative, the more leverage you have. Don't wait until a preliminary determination is issued.

The bottom line

A CDTFA audit notice is serious — but it is not a final determination, and it is not the end of the road. Businesses that respond strategically, with qualified representation, consistently achieve better outcomes than those that go it alone.

If you've received a CDTFA audit notice, the most important thing you can do right now is get a professional review of your situation before your first contact with the auditor.