California Franchise Tax Board Audit: What to Do

Receiving a letter from California’s Franchise Tax Board can feel serious. Your return may include investment income, multiple states, equity compensation, or other details beyond a straightforward W-2. The FTB generally contacts you in writing, identifies the tax years and issues under review, and explains what information it needs. An audit can arise from several sources, including information received from the IRS. The most useful first step is to understand the notice’s scope before gathering records or responding. Clear Peak’s tax notice and audit representation services can help you evaluate the request and organize a response.

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Once you know what the FTB is examining, the distinction between a notice, an audit, and a potential assessment becomes easier to manage. That distinction also clarifies which records matter and how to respond without expanding the issue unnecessarily.

What a California Franchise Tax Board Audit Means for an Individual Return

An FTB audit is a review of an individual tax return. The California Franchise Tax Board describes its purpose as verifying whether the income and deductions reported on the return are accurate. An audit is therefore a review process, not a conclusion that you intentionally made an error. The FTB may begin that review for more than one reason, including information received from the Internal Revenue Service (IRS). See the official FTB audit information for the agency’s description of the process.

Audit, notice, and assessment are different

A tax notice is the written communication you receive from the FTB. It may concern an audit, but not every FTB notice represents the same type of action. If the FTB places your return under audit, it says it will contact you in writing. The letter may identify the tax years and issues being reviewed, the additional information requested, and how to contact the agency. Those details define the immediate scope of the matter and should be read before you begin gathering records.

An assessment is a tax determination, usually communicated after the FTB evaluates information and decides that an adjustment may be due. In practical terms, an audit is the review, a notice is the communication, and an assessment is a proposed or issued statement of what the agency believes you owe or what adjustment applies. A letter that requests information is not the same as a final assessment.

FTB audit versus IRS audit

An IRS audit concerns federal income tax. An FTB audit concerns California tax administration and the California return. The two agencies are separate, although the FTB states that audits can originate from multiple sources, including the IRS. An IRS letter does not automatically tell you what the FTB will do, and an FTB letter should be answered based on the California issues and tax years named in that letter.

For a California individual return, start by identifying the agency, years, issues, and requested information. That simple distinction helps prevent an understandable but costly mistake: treating a notice as a final result or responding to a California review as though it were an unrelated federal examination.

Why the FTB May Review a California Individual Return

A California Franchise Tax Board review can begin for several reasons. The FTB states that audits may originate from multiple sources, including information received from the Internal Revenue Service (IRS). A federal adjustment can therefore create a California follow-up, while the FTB may also select and examine a return. Neither situation, by itself, proves that the taxpayer did anything wrong.

For employed, high-income professionals, complexity is often more relevant than income level alone. A return may combine W-2 wages, investment activity, stock compensation, multiple states, charitable deductions, or other items that require careful matching. Potential review issues for individual returns can include filing status, deductions, income sourcing, residency, and personal residence matters. These are areas where the FTB may need supporting records to understand how a reported figure was calculated, not evidence that every return containing such an item is automatically selected.

Federal adjustments and mismatched reporting

The FTB may compare information on a California return with information from the IRS or other reporting sources. Differences in income, withholding, filing status, or an item reported federally can prompt questions. A federal adjustment may also affect the California filing, although the state review still depends on California rules and the facts of the individual return. The FTB’s audit page explains that an audit is a review of income and deductions for accuracy: FTB audit information.

Residency, sourcing, and California ties

Residency and income sourcing can become especially important when a professional moves, works across state lines, or claims part-year or nonresident treatment. Published tax-practice commentary describes review questions involving a claimed move from California and continuing ties such as California property, a California employer, a California mailing address, or frequent travel to the state. Those facts do not automatically establish California residency. They may, however, lead the FTB to ask for a clearer timeline showing where the taxpayer lived, worked, and maintained significant connections.

In a residency-focused review, records may be used to reconstruct that timeline. Examples discussed in the same commentary include credit card activity, cellphone records, online banking activity, and travel data. The relevance of any record depends on the issues identified in the notice. Income level alone does not prove wrongdoing or establish an audit trigger. The practical question is whether the return’s reported positions are supported by consistent facts and documentation.

What an FTB Audit Notice and Information Request Usually Ask For

The California Franchise Tax Board (FTB) contacts taxpayers in writing when a return is under audit. The notice is the starting point for understanding what the agency is reviewing. It may identify the tax year or years involved, the specific issues under review, the additional information requested, and how to contact the assigned FTB representative. An audit notice does not, by itself, establish that you did anything wrong. It tells you what the FTB wants to examine.

Start by reading the tax year carefully. A notice may concern one return or several years, and the applicable records can differ depending on the period involved. Next, identify the issue scope. For example, the letter may focus on a particular deduction, income item, residency question, or other reported position. Keep that scope visible as you organize your response rather than assuming the entire return is automatically being challenged.

The FTB may send one or more Information Document Requests (IDRs). An IDR is a written request used to gather facts, understand your position, and verify items reported on the return. Read each request line by line, noting the documents or explanations requested and any stated response date. Do not substitute a general collection of financial records for a focused response. Providing unrelated material can make the review harder to follow and may raise questions outside the original request.

Deadlines, appointments, and contact instructions deserve equal attention. The FTB states that audit timeframes vary with complexity, and the process may include document review and an opportunity to respond to the agency’s position before the audit closes. If the notice is unclear, use the contact information in the letter to ask a precise process question and keep copies of your communications. For additional context on responding to a California tax notice, review the related resource, while keeping the audit letter and IDR as the controlling sources for your matter.

The official FTB audit process explains these notice and IDR steps. If the issues involve multiple years, residency, multiple income sources, or records that are difficult to reconcile, a tax professional can help organize a complete, responsive submission without assuming a particular outcome.

Records High-Income California Professionals Should Gather

Start with the notice and Information Document Request (IDR), then collect records that answer the specific questions raised. Producing every financial document you have can make review harder. A focused, organized file is usually more useful than a large upload of unrelated material.

Income and withholding

Gather Forms W-2, 1099s, K-1s, brokerage income summaries, retirement distribution records, and documentation for estimated tax payments and withholding. For employed professionals, compare these records with the income and withholding reported on the return. If you received compensation from more than one state, separate the records by work location and payment source. The article on reporting additional professional income may help physicians organize records for moonlighting or other clinical work.

Deductions and credits

For each deduction or credit named in the request, collect the supporting statements, receipts, payment records, and calculation worksheets. Keep the filed return and schedules beside the source documents so the reviewer can trace the reported amount. Student-loan interest statements, charitable contribution records, property-tax information, and education or professional expense documentation may matter when they relate to an item under review. Do not assume a record belongs in the response simply because it supports a deduction that was not requested.

Residency and multi-state activity

If residency or income sourcing is an issue, preserve records that establish where you lived and worked during the relevant period. Depending on the notice, this may include lease or property records, employer information, mailing addresses, bank statements, travel itineraries, cellphone records, and credit-card activity. These records can help establish a timeline, but the appropriate scope depends on the questions asked. Professionals with travel-based compensation may also review California individual return considerations when sorting workdays and source documentation.

MyFTB and correspondence

Save the audit letter, every IDR, your submitted responses, and proof of delivery. MyFTB can provide images of returns, notices, correspondence, wage and withholding information, estimated payments, credits, balances, and authorized representatives. It also supports secure messages with attachments and Power of Attorney filings. The California Franchise Tax Board describes these services in FTB 985.

Keep a simple index showing the document name, tax year, issue addressed, and date submitted. That record helps you identify gaps without expanding the response beyond the audit’s stated scope.

How to Respond to a California FTB Audit Without Creating New Issues

An audit notice is a request to review specific items on a return, not a conclusion that you acted improperly. A careful response keeps the discussion tied to the years, issues, and records identified by the California Franchise Tax Board (FTB). Use this sequence to organize your response without volunteering unrelated information.

1. Preserve the complete notice. Save the original letter, every enclosure, and the envelope or electronic delivery record. Scan the pages into one file, including the auditor’s name, phone number, tax years, issues under review, and document instructions. The FTB states that audit correspondence is sent in writing and may identify the information it needs and how to make contact. Review the FTB audit process alongside the notice.
2. Calendar the stated deadline. Enter the response date, any appointment, and internal preparation milestones on your calendar. Do not substitute a general assumption about audit timing for the date in your letter. If the deadline is unclear or the records cannot be assembled in time, contact the FTB promptly and document the request for clarification or additional time.
3. Identify the exact issue. Mark each question, schedule, deduction, income item, residency matter, or other point the notice names. Separate the FTB’s questions from your own assumptions about why the return was selected. An audit can arise from multiple sources, including IRS information, so do not infer the reason from the existence of the notice alone.
4. Reconcile the return to your records. Compare the filed return with Forms W-2, 1099s, brokerage statements, payment records, residency documents, and other evidence that directly supports the items in scope. Note differences before responding. A short reconciliation schedule can help connect each requested document to the line or position it supports.
5. Answer the Information Document Request precisely. The FTB may issue an Information Document Request (IDR) to gather facts and verify reported items. Respond to every numbered request, label attachments clearly, and explain when a requested record does not exist. Avoid sending unrelated records or making broad statements that create new questions.
6. Keep copies and proof of delivery. Retain the final response, attachments, upload confirmations, secure messages, mailing receipts, and any follow-up correspondence. The FTB may give you an opportunity to respond to its position before closing the audit, so maintain an organized chronology of what was submitted and when.
7. Consider representation when the facts are complex. You may authorize an accountant or tax attorney at any point during the audit. Representation can be especially useful for multi-state residency, substantial investment activity, disputed calculations, or a proposed adjustment. If you disagree with a tax decision, the process may provide an opportunity to protest or appeal. That option has its own requirements, so review the notice carefully or obtain professional advice before responding.

For broader preparation, see our responding to a California tax notice resource. The goal is not to say more than necessary. It is to provide accurate, supportable answers to the questions actually raised and preserve your ability to address the FTB’s position through the appropriate process.

What Happens After You Respond to an FTB Audit

The California Franchise Tax Board sends audit results in writing. Read the entire notice, including any proposed changes, response instructions, and stated rights. An audit notice does not by itself establish that you did anything wrong. It records the FTB’s current position after reviewing the return and supporting information.

Common written outcomes after an FTB audit

Outcome	What it means	What to do next
No Change	The FTB accepted the return as filed, with no additional tax due.	Keep the letter and supporting records with the return file.
Notice of Proposed Assessment	The FTB proposes additional tax and, potentially, penalties based on its findings.	Review each adjustment, supporting authority, and the notice’s response instructions.
Proposed overassessment or overpayment, credit, or refund	The review may indicate that too much tax was paid or that a credit or refund is due.	Confirm the calculation and follow the notice process for receiving or applying the amount.
Protest or appeal	If you disagree with an applicable tax decision, the FTB may provide a protest or appeal opportunity.	Use the stated procedure and deadline, with professional review when the issues are complex.

These outcomes, along with adjusted carryover amounts and partial or full claim denials, are described on the FTB audit page. If additional tax or penalties are owed, interest generally accrues from the original return due date until the FTB receives payment in full. That cost can make it important to evaluate the notice promptly rather than waiting for a later collection communication.

California’s general assessment period is four years from the filing date. A return filed before its original due date is generally measured from that original due date. If no return was filed, the FTB may assess at any time. Federal adjustments have separate rules: California law generally requires notice to the FTB within six months, and the applicable assessment period can differ depending on when notice is provided. These are statutory rules with exceptions, not personalized deadline advice. Review the notice and FTB 985 for the applicable process before choosing a response. Also check whether the notice addresses a carryover item or refund claim separately, because a change that does not create additional tax for the audited year can still affect a later return.

When FTB Audit Representation May Make Sense

You do not need representation for every California Franchise Tax Board audit. It may be worth considering when the return involves several moving parts, the requested records are extensive, or the issue could affect more than one tax year. A high-income professional may benefit from another set of eyes when the FTB is reviewing investment activity, multiple income sources, residency, or income earned in more than one state.

Residency and multi-state questions can be especially fact intensive. A response may require a consistent timeline supported by employment records, housing information, travel history, financial activity, and other documents. If the FTB sends an Information Document Request (IDR) that is difficult to interpret, a representative can help organize the response around the issues actually identified in the notice rather than sending an unfocused collection of records.

Representation may also make sense after the FTB communicates a proposed assessment, or when you disagree with the agency’s position. The FTB states that taxpayers may have an accountant or tax attorney represent them at any time during an audit. Depending on the matter, the process may include responding to the auditor, clarifying the factual record, or evaluating whether a protest or appeal is appropriate. An audit notice is not, by itself, a finding that you did anything wrong, and no representative can promise a particular result. After the immediate notice response, Clear Peak’s individual tax planning services for high-income Californians can support ongoing planning around changing income, investments, and estimated taxes.

MyFTB can help make the administrative side more manageable. Its services may show returns, notices, correspondence, balances, withholding, payments, credits, and authorized representatives. Taxpayers can also file a Power of Attorney declaration and send secure messages with attachments through the platform. Review the official FTB 985 publication for details about these services and taxpayer rights.

Clear Peak Accounting offers customized tax notice and audit representation for California taxpayers statewide. If you want help assessing your notice, organizing the requested information, or determining whether representation fits your situation, contact Clear Peak Accounting to discuss the facts before responding.

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Frequently Asked Questions

What should I do after receiving an FTB audit notice?

Read the notice carefully, identify the tax years and issues under review, and note the information requested and the FTB contact details. The FTB sends audit notices in writing, and the letter may explain what documents or explanations it needs. Keep the original notice and organize your response around its stated scope. FTB audit information explains these notice elements.

What is an Information Document Request?

An Information Document Request, or IDR, is a request the FTB may send during an audit to gather facts and verify items reported on your return. Respond to the specific requests with clear, complete records, and retain copies of everything submitted. The FTB may also schedule appointments, review documents, and give you an opportunity to respond before closing the audit. The FTB describes the audit process here.

Can I have an accountant or tax attorney represent me?

Yes. The FTB states that you have the right to have a representative, such as an accountant or tax attorney, at any time during an audit. Representation may be useful when the issues involve multiple states, complex investment records, residency questions, or a proposed adjustment. FTB taxpayer rights include the right to representation.

What records can I find through MyFTB?

MyFTB may provide images of tax returns, notices, and correspondence, along with account balances, wage and withholding information, estimated payments, credits, and authorized representative information. Its online services also allow users to file a Power of Attorney declaration, send secure messages with attachments, and protest a Notice of Proposed Assessment. See FTB 985 for the available services.

What outcomes can follow an FTB audit?

The FTB sends audit results in writing. Possible outcomes include a No Change letter, a Notice of Proposed Assessment, an overassessment or overpayment notice, a credit or refund, or a proposed carryover adjustment. If you disagree with a tax decision, the FTB says you may have an opportunity to protest or appeal, when applicable. Review the FTB’s listed audit outcomes.

Contact Clear Peak Accounting About Your FTB Audit

If you received a California Franchise Tax Board notice, a focused review can help you understand what the request covers and organize a response that addresses the identified issues. The right next step depends on the notice, tax year, records, and facts involved.

Contact Clear Peak Accounting to discuss your California tax notice or FTB audit representation review.