A California EDD audit is a formal review by the Employment Development Department of your business’s payroll records to confirm that wages are reported correctly and every worker is properly classified. The review typically covers the 12 most recently completed calendar quarters, and its central question is almost always whether people you paid as independent contractors should have been treated as employees. If the answer is no, the bill can include back Unemployment Insurance contributions, Employment Training Tax, State Disability Insurance, income tax withholdings, a penalty of 15 percent (or as much as 100 percent when fraud is involved), and interest compounding daily at 7 percent as of early 2026.1Employment Development Department. Interest Rate on Overdue Taxes
What the Auditor Is Really Looking For
Most EDD assessments come out of worker classification. California uses the ABC test, codified in Labor Code Section 2775, which presumes every worker is an employee. To treat someone as an independent contractor, your business has to satisfy all three prongs:2California Legislative Information. California Labor Code 2775
- The worker is free from your control and direction, both in the contract and in daily practice.
- The work is outside the usual course of your business. A delivery company that hires drivers, for example, struggles here because driving is the core operation.
- The worker is customarily engaged in an independently established trade or business of the same nature as the work.
Fail any one prong and the worker is an employee for payroll tax purposes. Auditors don’t stop at contract language. They look at who sets the schedule, who provides the tools, whether the worker has other clients, and whether the worker holds a business license or markets their own services.3Labor and Workforce Development Agency. ABC Test
A handful of occupations sit outside the ABC test and are instead measured under the older, more flexible Borello standard, including certain licensed insurance agents, physicians, surgeons, dentists, and professionals in the music recording industry.4Department of Industrial Relations. Independent Contractor Versus Employee
What Triggers an Audit
The most common trigger is a former worker filing for unemployment benefits after being paid as a contractor. That single claim tells the EDD someone may have been misclassified, and the agency often widens the review to your whole workforce rather than that one person.
Discrepancies on your Quarterly Contribution Return and Report of Wages (Form DE 9) draw scrutiny too.5Employment Development Department. Required Filings and Due Dates The EDD also runs industry sweeps in sectors with historically high misclassification rates, including construction, trucking, janitorial services, and home health care.
Cross-agency data sharing makes mismatches easy to spot. The EDD receives information from the IRS and the California Franchise Tax Board, so a business reporting low payroll on its DE 9 while claiming large labor expenses on federal returns stands out.6Franchise Tax Board. Bill Analysis SB 755 A gap between your 1099 filings and your state payroll reports is one of the clearest red flags.
How Far Back the Audit Reaches
A standard audit covers three years, meaning the 12 most recently completed calendar quarters. The EDD must issue any notice of assessment within three years after the close of the quarter when the liability accrued, or within three years of a deficient return being filed or due, whichever is later.7California Legislative Information. California Code UIC 1132
Two situations blow that window open. If you never filed required returns without good cause, the lookback stretches to eight years. If the EDD finds fraud or intent to evade, there is no time limit at all; the agency can go back as far as the evidence supports.
Documents and Interviews to Prepare For
Preparation starts when you receive the audit notification package. It typically includes a Pre-Audit Questionnaire (Form DE 996Q) and an Information Sheet. Corporations also receive a Corporate Information Questionnaire (Form DE 204) asking about officer duties and compensation.8Employment Development Department. Payroll Taxes – Forms and Publications
Expect to hand over:
- Payroll records and check registers for all periods under review
- Bank statements showing payments to workers and contractors
- Federal income tax returns and all 1099-NEC or 1099-MISC forms issued
- Contracts and written agreements with independent contractors
- Invoices from workers and any records showing how they billed for services
The pre-audit questionnaire asks you to describe your business operations and each worker’s role. Accuracy matters. If you describe a contractor as “free to set their own schedule” and the auditor’s bank records or worker interviews show mandatory shift times, the inconsistency becomes evidence against you. Auditors do contact workers directly to ask about daily routines, who directs the work, and whether they serve other clients. Those conversations often carry more weight than any contract.
How the Audit Unfolds
It opens with an entrance interview. The auditor wants to understand how the business actually runs: who assigns work, how workers are paid, what tools you supply, how much independence workers have. That conversation frames the rest of the audit.
Auditors often use a “test year” approach, examining one calendar year in depth to identify patterns. If that year reveals widespread problems, the review expands to other years within the statutory period. This sampling method lets the EDD estimate total liability without auditing every transaction.
At the end comes an exit interview. The auditor walks you through preliminary findings, and this is your window to correct factual errors, supply missing documents, or explain something the auditor misread. It isn’t a negotiation, but mistakes are much easier to fix here than after the assessment is finalized.
What the Notice of Assessment Includes
If the audit uncovers unpaid taxes, the EDD issues a Notice of Assessment. It generally covers four categories of back taxes: Unemployment Insurance contributions, Employment Training Tax, State Disability Insurance, and Personal Income Tax withholdings that should have been deducted for reclassified employees.
Penalty Tiers
The penalty depends on what the auditor finds. For a complete failure to file required returns, Section 1126 adds a flat 15 percent penalty on top of the contributions owed.9California Legislative Information. California Code UIC 1126 If you filed but underreported due to negligence or intentional disregard of the law, Section 1127 adds a separate 15 percent penalty on the deficiency.10California Legislative Information. California Code UIC 1127
Fraud escalates the numbers sharply. Section 1128 adds a 50 percent penalty when any part of the deficiency is due to fraud or intent to evade, stacked on top of the 1126 or 1127 penalty. Another 50 percent may be added if the employer also failed to provide required information returns. Fraud-related penalties alone can reach 100 percent of the original assessment.11California Legislative Information. California Code Unemployment Insurance Code UIC 1128
Interest
Interest runs from the date the taxes were originally due, not the date of the assessment. For the first half of 2026 the rate is 7 percent, compounded daily on unpaid tax, accumulated interest, and certain penalties.1Employment Development Department. Interest Rate on Overdue Taxes The rate adjusts twice a year, so a liability stretching back three years can cross several rate periods. On a six-figure assessment, interest alone can add tens of thousands of dollars.
Personal Liability for Owners and Officers
A corporation or LLC does not automatically shield you. Under Section 1735, any officer, major stockholder, or other person in charge of the company’s affairs who willfully fails to pay required payroll taxes can be held personally liable for the full amount of unpaid contributions, withholdings, penalties, and interest.12California Legislative Information. California Code UIC 1735
The EDD can assess these individuals directly and use its full collection toolkit against them, including levies on personal bank accounts and liens on personal property. “Willfully” does not require intent to defraud; it generally means you knew or should have known the taxes were due and chose not to pay. If you signed the checks, controlled the bank accounts, or made financial decisions, the EDD will likely treat you as a responsible person.
Section 1735.1 extends personal liability to a related scenario, when a business uses a third-party service to exchange money for payroll services or labor and that arrangement results in unpaid taxes.13California Legislative Information. California Code UIC 1735.1
Appealing an Assessment
You have 30 days from the date the Notice of Assessment is served to file a Petition for Reassessment with an administrative law judge. Miss it and the assessment becomes final and enforceable. An ALJ may grant an additional 30 days for good cause, but past that, late filings are dismissed unless you can show improper service or that the EDD’s own actions caused the delay.14California Legislative Information. California Code UIC 1222
At the hearing you can present documents, call witnesses, and argue that the classification was correct or the math was wrong. The ALJ issues a written decision that can affirm, modify, or set aside the assessment.
Board Appeal and Superior Court
An adverse ALJ decision can be appealed to the California Unemployment Insurance Appeals Board within 30 days. The Board usually does not hold a new hearing; it reviews the existing record, the ALJ’s decision, and written arguments.15California Unemployment Insurance Appeals Board. Filing an Appeal If the Board rules against you, the last step is a Petition for Writ of Mandate in Superior Court within six months, asking a judge to review whether the process was proper and whether substantial evidence supported the Board’s conclusion.
Paying, or Not Paying
Paying in full stops interest from growing. Most businesses can’t do that, so the EDD offers installment agreements through Form DE 927B. To qualify, you must file all missing or delinquent payroll tax returns and submit a good-faith payment with your application. Agreements longer than one year require full financial disclosure.16Employment Development Department. Installment Agreement Request DE 927B
Even with an approved agreement, the EDD can file a Notice of State Tax Lien, interest keeps accruing daily, and the state can offset any refunds you’re owed, including lottery winnings. Miss a payment or take on new liabilities and the EDD can move to involuntary collection without further notice.
Once an assessment is final and unpaid, the collection tools are aggressive: state tax liens, levies against bank accounts and accounts receivable, wage garnishment through Earnings Withholding Orders, refund interception, and warrants for seizure and sale of real and personal property.17Employment Development Department. Tax Compliance Guidelines DE 83 Bank levies hit hard because the bank must remit whatever is in the account when the levy arrives. A levy on accounts receivable from a third party stays in force for a full year and can be renewed.
For businesses that genuinely cannot pay, the EDD has an Offer in Compromise program, though approval is discretionary and requires showing that the offered amount is the most the agency can reasonably expect to collect.