California Appeals Court Rejects State's 'Unitary Business' Tax Theory for Remote Professionals

SAN FRANCISCO – A California appellate court on May 1 delivered a significant victory for remote workers and independent contractors, ruling that a Texas-based radiologist is not subject to California income tax for work he performed from his home state. The decision reverses a lower court ruling and curtails the California Franchise Tax Board's (FTB) aggressive use of the "unitary business" theory to tax nonresidents. The case, Garcia-Rojas v. Franchise Tax Board, involved Dr. Xavier Garcia-Rojas, a radiologist who works as an independent contractor from Texas for a national medical services company that serves hospitals in California. The FTB had assessed California income tax against him, arguing that his sole proprietorship was a "unitary business" operating both within and outside California, thus requiring him to apportion his income to the state. The California Court of Appeal, First Appellate District, disagreed, concluding that the FTB had fundamentally misapplied the unitary business doctrine. The ruling, which came just two days after oral arguments, represents a critical clarification of the limits of California's tax authority over a national remote workforce. The unitary business principle is a long-standing concept in state taxation, but it has traditionally been applied to corporations with multiple, interdependent business segments operating across state lines. The principle allows a state to tax a portion of the corporation's worldwide income based on the level of business activity within that state. The FTB's attempt to apply this complex corporate tax concept to a sole proprietor performing a single professional service from another state was a novel and expansive interpretation of its authority. A San Francisco Superior Court had initially granted summary judgment in favor of the FTB, upholding the tax assessment. That decision caused alarm among tax professionals and the growing population of remote independent contractors who serve California-based clients without ever setting foot in the state. Dr. Garcia-Rojas, represented by attorneys Bradley R. Marsh and Jennifer A. Vincent of the law firm Greenberg Traurig, appealed the decision. His legal team argued that a single individual performing a single activity—in this case, interpreting medical imaging studies—cannot, by definition, constitute a unitary business. A unitary business, they contended, requires multiple distinct business activities or entities that are functionally integrated. The appellate court agreed with this reasoning. Its decision stated that the FTB failed to establish that Dr. Garcia-Rojas operated a unitary business. The court held that the doctrine applies only when multiple business entities or separate business activities are involved and cannot be stretched to cover a single professional service performed by an individual in another state. The ruling effectively invalidates the FTB's theory in this context and provides a shield for other nonresident sole proprietors in similar situations. For thousands of consultants, freelancers, and other professionals across the United States who provide services remotely to the vast California market, the decision removes a significant source of tax uncertainty and potential liability. It clarifies that merely having clients or customers in California does not automatically create a tax obligation if the work itself is performed entirely elsewhere. This case highlights the ongoing friction between state tax agencies and the realities of a modern, decentralized economy. As remote work becomes permanent for many, states with high income taxes, like California, have been exploring new legal avenues to capture revenue from nonresidents who contribute to their economies. This ruling sets an important precedent, suggesting there are clear constitutional limits to these efforts. While this ruling offers a welcome clarification for remote professionals, it underscores the complex and often aggressive nature of state tax nexus rules. States are constantly testing the boundaries of their taxing authority, and business owners cannot assume that working from a low-tax state automatically shields them from obligations in high-tax states where their clients are located. The Garcia-Rojas case was successful for the taxpayer, but it came after a lengthy and expensive legal battle that most small business owners cannot afford. Proactive planning and a clear understanding of multi-state tax law are not optional for any business with a national client base. This is precisely the kind of multi-state tax issue where professional guidance is critical. Our firm's tax preparation and compliance services help clients navigate these treacherous waters, ensuring they are structured correctly and file accurately to avoid costly disputes with state agencies. For businesses facing similar cross-state tax challenges, understanding your obligations is the first step. We encourage business owners to review their situation with an advisor; C&S Finance Group LLC at csfinancegroup.com is available to help. Following the appellate court's decision, the case has been remanded to the San Francisco Superior Court for further proceedings consistent with the new ruling. The FTB has not yet indicated whether it will seek a review from the California Supreme Court. In the meantime, tax professionals and remote business owners nationwide will be watching closely to see how the FTB adjusts its enforcement strategies for nonresident independent contractors.