California FTB Audit Attorney San Diego

What Is a California FTB Audit?

A California Franchise Tax Board audit is an examination of your state income tax return to determine whether you correctly reported income, deductions, and credits — and, in residency cases, whether California has jurisdiction to tax your worldwide income at all. The FTB selects returns through computer scoring models, data-matching against IRS audit results, cross-referral from the EDD and CDTFA, and targeted enforcement programs focused on high-income taxpayers who claim to have left California.

The FTB's primary objective varies by audit type. In a residency audit, the agency is trying to prove you were a California resident — or statutory resident under R&TC §17016 (present in California for more than nine months) — so it can tax all your worldwide income. In an income audit, the FTB is verifying reported deductions, business expenses, or California-source income from pass-through entities.

The critical distinction is between a residency audit — which can result in California taxing millions of dollars in income you believed was not California-source — and a standard income audit examining specific deductions or credits on a return you already filed as a California resident. Residency audits carry exponentially higher stakes because the entire return is at issue.

6 Types of FTB Audits — and Why the Type Changes Everything

The type of FTB audit determines the evidence the agency needs, the burden of proof, and whether you are defending specific deductions or your entire California tax liability for one or more years.

Residency Audit — Domicile Investigation

The FTB investigates whether you were domiciled in California during the tax year. This audit targets taxpayers who file as part-year residents or nonresidents while the FTB's data suggests continued California ties. Auditors reconstruct your physical location using cell phone tower data, EZ-Pass records, credit card transactions, and airline boarding passes. Income at stake: all worldwide income for each year contested.

Statutory Resident Audit

Under R&TC §17016, if you spent more than nine months (aggregate) in California during a tax year and maintained a permanent place of abode here, the FTB treats you as a statutory resident — even if your domicile is elsewhere. This audit counts days, not intent.

Income / Deduction Audit

A standard examination of reported income, deductions, or credits on a return filed as a California resident. Common targets include business expense deductions, depreciation schedules, charitable contributions exceeding $5,000, and California-source income from S corporations and partnerships.

Nonresident Income Source Audit

If you filed as a nonresident, the FTB may audit whether income you reported as non-California-source actually originated from California. California taxes nonresidents on California-source income under R&TC §17951, including income from real property, services performed in California, and pass-through entities with California operations.

IRS-Initiated Adjustment (Piggyback Audit)

When the IRS adjusts your federal return, the FTB receives the results and automatically assesses corresponding California adjustments. You have six months from the date of the federal final determination to file an amended California return; failure to do so triggers an FTB assessment.

Cross-Agency Referral — EDD or CDTFA

The FTB receives data from the EDD (worker classification findings) and CDTFA (unreported sales tax). An EDD misclassification finding can trigger an FTB examination of business deductions and income reporting.

Audit Type	FTB Authority	What's at Stake	Key Evidence	Typical Timeline	First Document
Residency Audit	R&TC §17014/§17016	All worldwide income	Cell records, credit cards, travel	12–24 months	FTB 6282 questionnaire
Statutory Resident	R&TC §17016	All worldwide income	Day count, place of abode	12–18 months	FTB 6282 questionnaire
Income/Deduction	R&TC §19032	Specific deductions or credits	Receipts, records, schedules	6–12 months	Audit initiation letter
Nonresident Source	R&TC §17951	California-source income	K-1s, service contracts, property	6–12 months	Audit initiation letter
IRS Piggyback	R&TC §18622	Federal adjustment amounts	IRS RAR or Notice of Change	3–6 months	Notice of Proposed Assessment
Cross-Agency Referral	R&TC §19504	Varies — income or deductions	EDD or CDTFA audit results	6–12 months	Audit initiation letter

What Happens From the Moment You Receive an FTB Audit Notice

1. Identify the Audit Type and Review the Information Request

   The FTB sends either an audit initiation letter with a specific information request or — for residency audits — the FTB 6282 questionnaire, a detailed residency determination form that asks about your property, family, employment, financial accounts, and physical location across the entire tax year. We identify which audit type you are facing and assess the initial information request before you respond to anything. The most common mistake is completing the FTB 6282 without legal review — every answer becomes evidence in the FTB's file.

2. File Form FTB 3520 (Power of Attorney) Immediately

   We file FTB 3520 the day you retain us, authorizing Brotman Law to receive all FTB correspondence and communicate with the auditor on your behalf. From this point, the FTB contacts our office — not you — for every request, meeting, and deadline.

3. Reconstruct Your Day-by-Day Location Calendar

   For residency audits, we build a comprehensive day-by-day calendar showing your physical location for every day of the contested tax year using flight records, hotel confirmations, cell phone records, credit card statements, EZ-Pass or FasTrak data, and work calendars. The FTB will construct its own version — our calendar must be more complete and more accurate than theirs.

4. Compile the "Closest Connections" Evidence

   The FTB evaluates 19 factors from FTB Publication 1031 to determine your domicile, including where your family resides, where you maintain property, where your bank and financial accounts are located, where you vote, where your vehicles are registered, and where you hold professional memberships. We organize evidence for each factor demonstrating that your closest connections are to your claimed domicile state, not California.

5. Respond to the FTB Strategically — Provide What Supports Your Position

   Unlike an IRS audit where overproduction is the primary risk, an FTB residency audit requires proactive documentation to overcome California's presumption that you remain a resident until you prove otherwise. We submit a structured response addressing every factor in Publication 1031, supported by documentary evidence, while excluding information that could undermine your domicile claim.

6. Protest the Notice of Proposed Assessment Within 60 Days

   If the FTB issues a Notice of Proposed Assessment (NPA), you have 60 days to file a written protest under R&TC §19041. The protest must state the specific grounds for disagreement and include supporting documentation. Missing the 60-day deadline converts the NPA into a final assessment with penalties and interest accruing immediately.

7. Appeal to the Office of Tax Appeals if the Protest Fails

   After the FTB issues a Notice of Action (NOA) denying your protest, you have 30 days to file an appeal with the California Office of Tax Appeals (OTA). OTA is an independent agency — not part of the FTB — with a three-judge panel that conducts a de novo review. This is your strongest opportunity to reverse an unfavorable FTB determination.

What FTB Auditors Are Actually Looking For

FTB auditors — particularly in residency cases — are trained to find evidence that California remains your home. The burden of proof is on you to demonstrate that you established domicile elsewhere, and the FTB begins every residency audit with the presumption that your existing California domicile continues until you affirmatively prove a change.

How the FTB Reconstructs Your Physical Presence

The FTB uses subpoena power to obtain cell phone tower records, credit card transaction histories, airline and hotel records, EZ-Pass and FasTrak toll data, and social media posts with location metadata. Auditors map these data points onto a calendar to determine how many days you spent in California versus your claimed domicile state. If the FTB can place you in California for more than nine months (aggregate) while you maintained a permanent place of abode here, you are a statutory resident under R&TC §17016 regardless of where you claim domicile.

How FTB Auditors Expand Scope

A residency audit that begins with one tax year frequently expands to cover multiple years — especially if the FTB determines you were a resident in the contested year, because the same evidence pattern typically applies to surrounding years. Volunteering information about prior or subsequent years, providing tax returns for years not under audit, or mentioning plans to return to California gives the auditor grounds to expand. We instruct clients to respond only to the specific tax years identified in the audit notice and to provide no information about adjacent periods.

What Produces a Favorable Outcome

The strongest residency defense is a "clean break" with contemporaneous documentation: California driver's license surrendered and new-state license obtained, voter registration changed, vehicles re-registered, primary bank accounts moved, California property sold or leased to unrelated third parties, and new-state professional relationships established (doctors, dentists, attorneys, financial advisors). The documentation must exist before the audit — creating it after the FTB contacts you is significantly less persuasive. For income audits, a favorable outcome requires complete substantiation of every deduction with receipts, contemporaneous records, and clear business-purpose documentation.

Your Rights During an FTB Audit

The most important right during an FTB audit is the right to protest a Notice of Proposed Assessment within 60 days under R&TC §19041 — the longest protest window of any California tax agency.

• Right to Representation — R&TC §21015 You have the right to be represented by an attorney, CPA, or enrolled agent at every stage of the FTB audit. Filing Form FTB 3520 requires the FTB to communicate exclusively through your designated representative.
• Right to Protest the NPA — R&TC §19041 Within 60 days of a Notice of Proposed Assessment, you can file a written protest. The FTB must review your protest and issue a Notice of Action before the assessment becomes final.
• Right to Appeal to the Office of Tax Appeals Within 30 days of the Notice of Action, you can appeal to the OTA — an independent tribunal that reviews FTB decisions de novo with a three-judge panel. OTA proceedings are the most effective venue for reversing FTB residency determinations.
• Right to One-Time Penalty Abatement The FTB offers a one-time penalty abatement for taxpayers with a clean compliance history. If you have filed all required returns and paid all tax due for the prior three years, you may qualify for automatic waiver of the late-filing or late-payment penalty.
• Right to Sue for Refund in Superior Court If the OTA denies your appeal on a claim for refund, you have 90 days from the OTA decision becoming final to file an action in California Superior Court. You must pay the tax first and file a refund claim before pursuing this path.

If the Audit Doesn't Go Your Way: Appeals and Next Steps

FTB Protest and Notice of Action

You have 60 days from the Notice of Proposed Assessment to file a written protest with the FTB under R&TC §19041. The FTB's Protest Unit reviews your case independently from the original auditor and has authority to reduce, revise, or withdraw the assessment. Approximately 40% of protests result in some modification. After review, the FTB issues a Notice of Action (NOA) — your final determination from the agency.

Office of Tax Appeals (OTA)

Within 30 days of the NOA, you file an appeal with the OTA. A panel of three Administrative Law Judges conducts a de novo review — they examine the evidence independently, not just whether the FTB followed procedures. You can request an oral hearing and present new evidence not available during the protest. OTA decisions are published and serve as precedent, making this the most significant stage for establishing favorable legal positions on residency issues.

Our Track Record at This Stage

Brotman Law has secured over 100 appeal victories and eliminated more than $100 million in penalties and interest in aggregate. In FTB residency cases specifically, the $890,000 assessment reversal demonstrates our approach: we build the appeal file during the audit itself, ensuring that every document submitted to the auditor is prepared as potential OTA hearing evidence. The day-by-day location calendar and Publication 1031 factor analysis we create during the audit becomes the core exhibit package at appeal.

Why Brotman Law for California FTB Defense

• $890K FTB assessment reversed on appeal — a residency audit where we reconstructed the complete day-by-day location calendar and proved all 19 Publication 1031 factors favored non-California domicile.
• $100M+ in penalties and interest eliminated in aggregate — including FTB accuracy-related penalties, late-filing penalties, and interest reductions through protest and OTA appeal.
• 100+ appeal victories — we build the OTA appeal case during the audit itself, so every document the FTB auditor receives is prepared as a potential hearing exhibit.
• Multi-agency defense strategy — FTB audits frequently intersect with EDD and CDTFA issues. We coordinate defense across all California agencies to prevent one audit from triggering assessments at another agency.
• Form FTB 3520 filed on day one — you never complete the FTB 6282 questionnaire, respond to an information request, or attend an auditor meeting without our team reviewing the communication first.

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