California FTB letter: Audit Letter (no single public notice number listed)

A California FTB audit letter is the official notification that the Franchise Tax Board is examining your state tax return for one or more specific years. It’s more serious than an FTB outreach notice or a document request — it means a field auditor or correspondence auditor has been assigned to your case and has identified issues on your return worth investigating. The letter will tell you who your auditor is, what years are under review, and what records you’ll need to provide.

The scope matters a lot. Some California audits are ‘correspondence audits’ where you mail in documentation and the auditor reviews it remotely — these tend to be smaller, more focused, and faster to resolve. ‘Field audits’ involve an auditor coming to your home, office, or your representative’s office to review records in person. Field audits are larger, more complex, and usually involve multiple issues across multiple years. The audit letter will typically indicate which type of examination you’re facing.

At The Reed Corporation, we represent clients through California FTB audits from initial notice through resolution. Getting professional representation from the start significantly improves outcomes — auditors ask fewer questions when responses are complete and organized, and having someone who knows FTB procedure prevents early missteps that are hard to undo.

The specific records requested in a California FTB audit letter depend on what issues the auditor has flagged, but common requests include: federal returns and all schedules for the years under audit, W-2s and all 1099s, bank statements for all accounts (personal and business), real estate records if there were property transactions, and business records like profit and loss statements, general ledger, and payroll records. For residency audits, the auditor will want records that document where you physically were each day — travel records, credit card statements, utility bills, and similar.

The FTB has broad authority to request records under Revenue and Taxation Code Section 19504. You’re not required to give the auditor everything they ask for in a single response — it’s entirely appropriate to provide records in an organized, staged fashion with a cover letter explaining what you’re providing and why. What you should never do is ignore the request or provide incomplete records without explanation. Both of those responses signal to the auditor that something is being concealed.

California auditors are also increasingly requesting electronic records — QuickBooks files, bank statement downloads in CSV format, and email records in some cases. You’re generally not required to provide electronic records in a specific format if you don’t maintain them that way. We advise clients on what to produce, in what format, and how to respond to requests for records you don’t maintain.

A correspondence audit — focused on one or two specific items — can be resolved in 3 to 6 months from the initial letter. A more complex field audit with multiple issues and multiple years can take 12 to 24 months, sometimes longer. The timeline depends on how quickly you respond to information requests, the complexity of the issues, the auditor’s workload, and whether you end up in the protest or appeals phase after the audit.

The FTB has its own internal guidelines for audit completion timelines, but there’s no legal deadline that forces the FTB to close an audit within a specific time. What there are deadlines for is the statute of limitations. California generally must issue its final assessment within four years of the return due date. If an audit is dragging on, the FTB will typically ask you to sign a ‘consent to extend the statute’ — Form FTB 3570 — before the four-year period expires. You’re not required to sign, but refusing to extend can prompt the FTB to issue a protective assessment even before the audit is complete.

We set realistic timelines for clients at the outset based on the audit type and issues. Correspondence audits that are handled promptly and professionally often resolve faster than the FTB’s internal targets. Field audits with complex issues take longer regardless of how efficiently you respond. Knowing the expected timeline helps clients plan so.

Yes. With a properly executed California Power of Attorney (Form FTB 3520-PIT for individuals), your CPA or enrolled agent can handle the entire audit on your behalf — responding to information document requests, meeting with the auditor, negotiating proposed adjustments, and filing protests — without you being present at any stage. The auditor communicates directly with your representative, and all notices get sent to your representative’s address on file.

Having professional representation often reduces the amount of direct contact the FTB has with you personally, which matters because auditors are trained to ask open-ended questions and follow up on answers. An experienced representative knows what information is directly responsive to the request and what goes beyond the scope of the audit. Taxpayers who represent themselves often inadvertently expand the audit scope by providing more information than is required or making statements that create new audit issues.

One limitation: if the FTB requests an interview with you specifically — which is more common in fraud investigations than routine audits — you have the right to have your representative present during that interview. You also have the right to decline answering questions that could be self-incriminating, though that’s rarely the situation in a standard California income tax audit. We assess each client’s specific situation to determine the right level of direct client involvement.

Missing records are a common audit challenge. California requires taxpayers to keep records sufficient to verify their return for at least four years — the standard statute of limitations period — and longer in some situations. If you can’t locate original records, the audit isn’t automatically lost. You can reconstruct records using secondary sources: bank statements, credit card records, cancelled checks, vendor invoices, insurance documents, and electronic records from vendors or service providers. Reconstruction takes work, but it produces defensible documentation.

For specific types of deductions, alternative documentation standards apply. The Cohan rule — derived from a federal court case — allows courts and tax agencies to estimate allowable deductions when exact records are unavailable, as long as the taxpayer can establish that the expense actually occurred and its approximate amount. California courts have applied this principle in FTB audit cases. The rule doesn’t apply to certain items like vehicle expenses, travel, meals, and entertainment where IRC Section 274 requires contemporaneous records.

We help clients reconstruct records for years where original documents are missing. The reconstruction process involves pulling everything available from financial institutions, vendors, and service providers, organizing it in a format that mirrors the original return, and presenting it to the auditor with a narrative explaining how it was reconstructed. Proactively explaining the reconstruction effort is better than handing over disorganized materials and hoping the auditor fills in the gaps.