How the FTB Uses Data Analytics and Modeling to Identify Noncompliance

Much of what is written about tax agencies and artificial intelligence is speculation. The Franchise Tax Board (FTB) has described its own approach in public materials: a long-term modernization of its systems that centralizes data and uses analytics and modeling to select cases. This article summarizes what the FTB has said and what it means in practice.

The FTB’s Tax System Modernization

According to the FTB, its Tax System Modernization effort has three phases. The first, the Enterprise Data to Revenue (EDR) project, ran from 2011 to 2016. The FTB describes EDR as delivering a new return processing system with real-time validation, data capture, and fraud detection; improved analytics through a centralized data warehouse and enterprise data modeling; and enhanced enforcement tools for collection staff. The FTB reports that EDR generated approximately $3.7 billion in additional revenue over the life of the project and an additional $1 billion annually.

The Current Phase: More Data and Modeling

The FTB describes the second phase, EDR², as expanding its case management system to cover audit, collections, and filing enforcement; continuing to centralize its data in one enterprise platform; and increasing audit modeling and fraud detection by using new data and dynamic modeling strategies to address noncompliant behavior and the tax gap. It also lists improved case selection among its goals.

The FTB’s public description speaks of analytics, data modeling, and case selection. It does not detail the specific tools involved, so claims about particular technologies should be treated with caution unless the FTB has confirmed them.

Where the Information Comes From

Some of the FTB’s information sources are set out in law. Taxpayers must report federal changes to the FTB within six months after the final federal determination (Revenue and Taxation Code (R&TC) § 18622), and California’s assessment rules expressly address federal changes that the Internal Revenue Service reports to the FTB (R&TC § 19059). When the FTB’s records indicate that a return was required but none was filed, it sends a Request for Tax Return or a Demand for Tax Return, each of which states that the FTB has no record of the taxpayer’s California return.

What This Means for Taxpayers

Mismatches are what draw attention. A return that leaves out income reported by a third party, a federal adjustment that is not reported to California, or a residency position that is inconsistent with other information can lead to a notice or an audit.

Consistency and documentation are the practical safeguards. Reporting income accurately, reporting federal changes within six months, keeping records that support deductions and residency positions, and answering FTB notices on time address the same issues that data-driven case selection is designed to find.

Key Point

A notice generated from data matching is a starting point, not a final determination. Records that explain an apparent mismatch, such as income reported elsewhere on the return or income earned during a period of nonresidency, can resolve it.

Time Limits Still Apply

More data does not change the statute of limitations. The FTB generally has four years after a return is filed to propose an assessment (R&TC § 19057), six years when the taxpayer omits more than 25 percent of the gross income stated on the return (R&TC § 19058), and no time limit when no return was filed or a fraudulent return was filed with intent to evade tax (R&TC § 19087). Unreported federal changes can also keep a year open (R&TC § 19060).

Responding to a Notice

A Notice of Proposed Assessment can be protested within 60 days after it is mailed (R&TC § 19041), and the FTB’s decision on the protest can be appealed to the independent Office of Tax Appeals. A response that addresses each item in the notice, with supporting records, gives the FTB what it needs to correct its records.

The Bottom Line

The FTB has publicly committed to more data, more analytics, and better case selection. The practical response is the same as it has always been: accurate returns, timely reporting of federal changes, good records, and prompt, complete answers to FTB notices.

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