Nonresident Independent Contractors: Organizing Work-Location and Business-Structure Records Before a California Source-Income Analysis

When a nonresident independent contractor performs services for a California business, the question of whether any resulting income is California-source income can turn on a detailed, fact-specific analysis. A May 2026 California Court of Appeal decision, Garcia-Rojas v. Franchise Tax Board, No. A172054, illustrates how the regulatory framework governing that analysis can be contested at every stage — and why the quality of a contractor's underlying records often determines how much room exists to evaluate and, where appropriate, challenge a tax position. This page is an informational overview of the decision and its procedural context. It is not legal advice, and the outcome of any individual tax matter depends on facts and law specific to that situation.

Background: A Nonresident Physician and Remote Professional Services

The taxpayer in Garcia-Rojas was a radiologist residing in Texas who performed remote diagnostic readings for a California medical corporation, StatRad. Under their agreement, StatRad provided the hardware, software, software training, malpractice insurance, credentialing, and state licensing fees for 28 states (excluding Texas), requiring him to maintain medical licenses in those states, including California. The physician conducted all image readings from his home in Texas. After the Franchise Tax Board contacted him, he filed California nonresident returns, paid the assessed taxes, and subsequently filed refund claims. When the Franchise Tax Board did not act on the refund claims, he filed suit in superior court.

Procedural Posture: Summary Judgment and the Regulatory Framework

The trial court granted summary judgment in favor of the Franchise Tax Board. The court applied California Code of Regulations, title 18, section 17951-4(c), a provision that addresses how a nonresident's income from a business, trade, or profession is apportioned when that activity constitutes a unitary business with California connections. Under that framework, a portion of income can be attributed to California based on apportionment factors rather than solely on where the work was physically performed. The trial court concluded that the regulation applied and that the FTB was entitled to judgment as a matter of law.

The Court of Appeal's Reversal: The Unitary Business Question

The Court of Appeal reversed the summary judgment. The appellate court's central concern was whether the FTB had established, on the record before it, that a single individual operating as a sole proprietor and performing one category of professional services for one corporate client constituted a unitary business within the meaning of the regulation. The court concluded that the FTB had not made that showing on summary judgment. The opinion does not hold that the income is categorically exempt from California taxation, and it does not hold that physical work location is the only relevant factor. Rather, it holds that the specific regulatory theory the FTB relied upon required a factual predicate — the existence of a unitary business — that was not adequately established on the record presented.

The court also addressed FTB's reliance on Appeal of Bindley (Cal. OTA, May 30, 2019, No. 18032402), an Office of Tax Appeals decision involving a self-employed Arizona screenwriter. It held that OTA decisions do not bind California courts and found Bindley unpersuasive because it applied tests for deciding whether two businesses are unitary without first establishing that separate business activities existed to be united.

What the Court Did Not Decide

The Court of Appeal was careful to limit its holding. It expressly declined to decide whether California could tax the income under a different legal theory, and it remanded the case for further proceedings. This means the litigation is ongoing and the ultimate tax liability of the taxpayer has not been resolved. Readers should not interpret the reversal as a determination that the income is tax-free, that remote work location alone shields income from California taxation, or that the taxpayer has received or will receive a refund. The decision resolves a procedural question about the sufficiency of the FTB's showing under one specific regulation at the summary judgment stage.

Why the Unitary Business Concept Matters for Nonresident Contractors

California's personal income tax system draws a distinction between income that is sourced to California based on where services are physically performed and income that is subject to apportionment because it arises from a unitary business with California connections. For employees, the physical-performance rule is relatively straightforward. For independent contractors and sole proprietors, the analysis can be more complex. Regulations like section 17951-4 are designed to address situations where a nonresident's business activity is sufficiently integrated with California operations that a simple work-location rule would not capture the full picture. Whether a particular contractor's situation meets the threshold for unitary treatment is a fact-intensive inquiry, and Garcia-Rojas underscores that the FTB bears a burden of establishing that threshold when it relies on the apportionment framework.

Evidence and Record Implications for Nonresident Contractors

The procedural history of Garcia-Rojas — from FTB contact, to return filing, to payment, to refund claim, to litigation — reflects a pattern that nonresident contractors sometimes encounter. At each stage, the strength of the taxpayer's position depends heavily on the quality and organization of the underlying records. Relevant categories of documentation typically include evidence of where services were physically performed, the nature of the contractual relationship with any California business, the resources and infrastructure used to perform the work, the scope of any licenses held in California versus other states, the structure of the contractor's business entity, and the proportion of total income derived from the California engagement. Assembling this evidence before a dispute arises — rather than reconstructing it afterward — generally produces a more complete and defensible record.

Practical Steps for Nonresident Contractors to Consider

While no checklist substitutes for individualized legal and tax advice, nonresident contractors who perform services for California businesses may benefit from taking several organizational steps proactively. First, maintain contemporaneous records of where each category of work is performed, including logs, access records, and communications that reflect the physical location of service delivery. Second, preserve the governing contracts and any amendments that describe the scope of services, the resources provided by the California client, and the degree of integration between the contractor's work and the client's California operations. Third, document the structure of the contractor's own business — whether operating as a sole proprietor, a single-member LLC, a partnership, or a corporation — because entity structure can affect which regulatory provisions apply. Fourth, retain records of licenses, registrations, and professional memberships in each state, as these can bear on the characterization of the contractor's business activity. Fifth, keep records of total income by source so that any apportionment calculation can be evaluated against an accurate denominator. Consulting with a tax attorney familiar with California nonresident taxation before filing or responding to an FTB inquiry can help identify which records are most material to the specific regulatory framework at issue. Our tax legal services team works with nonresident clients navigating these questions.

Reading the Decision in Context

The published opinion in Garcia-Rojas v. Franchise Tax Board, No. A172054 is available through Justia and represents the current state of the law as of its May 2026 publication date. Because the case was certified for publication, it carries precedential weight in California courts. However, its holding is narrow: it addresses the sufficiency of the FTB's evidentiary showing under one regulation at the summary judgment stage. Nonresident contractors and their advisors should read the opinion carefully and should not generalize its holding beyond the specific procedural and regulatory context it addresses. California's nonresident taxation framework involves multiple overlapping statutes and regulations, and the applicable analysis depends on the specific facts of each engagement. For a broader overview of how California-source income questions arise in different contexts, see our legal library.

Questions About Nonresident Contractor California Tax Records

Does the Garcia-Rojas decision mean that nonresident contractors do not owe California income tax on remote work?

No. The Court of Appeal's decision is limited to the question of whether the Franchise Tax Board adequately established the factual predicate for applying a specific apportionment regulation at the summary judgment stage. The court expressly declined to decide whether California could tax the income under a different legal theory, and it remanded the case for further proceedings. The decision does not hold that remote work location alone shields income from California taxation, and it does not resolve the taxpayer's underlying liability.

What types of records are most important for a nonresident contractor to maintain before an FTB inquiry?

The most relevant records generally include contemporaneous documentation of where services were physically performed, the governing contracts with any California business, records reflecting the resources and infrastructure used to perform the work, evidence of the contractor's business structure and entity type, professional licenses held in each state, and income records broken down by source. The relative importance of each category depends on which regulatory framework the FTB applies, which is why organizing these records with the guidance of a tax attorney familiar with California nonresident taxation is advisable before any inquiry arises.

How does business structure affect a nonresident contractor's California source-income analysis?

Business structure can affect which statutes and regulations apply to a nonresident contractor's income. A sole proprietor, a single-member LLC, a multi-member partnership, and a corporation may each be subject to different rules governing how income is sourced or apportioned. The Garcia-Rojas case arose in the context of a sole proprietor, and the court's analysis of the unitary business concept was specific to that structure. Contractors operating through other entity types should evaluate their situations under the rules applicable to those entities, ideally with the assistance of qualified legal counsel.