The nerve center test is the rule federal courts use to decide where a corporation counts as a citizen for jurisdiction purposes. Under this test, a corporation’s principal place of business is the single location where its top officers direct, control, and coordinate the company’s activities. The Supreme Court adopted it in Hertz Corp. v. Friend in 2010, replacing a patchwork of competing approaches with one nationwide standard that looks at where the corporate brain sits, not where the corporate muscles work.1Justia U.S. Supreme Court Center. Hertz Corp. v. Friend, 559 U.S. 77 (2010)
Why Corporate Citizenship Matters
Federal courts can hear lawsuits between citizens of different states, but only if the dispute involves more than $75,000 and the opposing sides are from different states.2Office of the Law Revision Counsel. 28 USC 1332 – Diversity of Citizenship; Amount in Controversy; Costs This is diversity jurisdiction, and it exists so an out-of-state party doesn’t have to worry about hometown bias in a local court.
Deciding where a person lives is simple. Corporations are harder. Federal law treats a corporation as a citizen of two places: the state where it is incorporated and the state where it has its principal place of business.2Office of the Law Revision Counsel. 28 USC 1332 – Diversity of Citizenship; Amount in Controversy; Costs A company incorporated in Delaware with its principal place of business in Texas is a citizen of both. If you live in Texas and sue that company, you share a state of citizenship, diversity fails, and the case cannot proceed in federal court on that basis.
Pinning down the principal place of business is the whole point of the nerve center test.
How Courts Apply the Test
The nerve center is the place where high-level officers direct, control, and coordinate the corporation’s activities.1Justia U.S. Supreme Court Center. Hertz Corp. v. Friend, 559 U.S. 77 (2010) Those three functions sit at the core of the inquiry. Direction means setting long-term strategy and corporate policy. Control means the power to oversee operations and manage resources. Coordination means keeping the company’s divisions working toward the same objectives.
What courts actually look at is where the CEO and other senior executives spend their working days. Where does the board of directors meet? Where are the executive calendars, organizational charts, and corporate minutes anchored? A company with factories in ten states and retail locations in all fifty still has one nerve center: the office where leadership runs the whole operation.
The test requires a single, identifiable place within a state. A corporation cannot claim an entire state as its nerve center, and when leadership is split across multiple offices, a court will designate the one that serves as the ultimate seat of authority.
Older approaches sometimes measured where a company did the most business. That is how Hertz itself was initially deemed a California citizen, because a large share of its rental activity took place there, even though its officers ran the company from New Jersey. The Supreme Court rejected that approach because scattering the analysis across states produced unpredictable, inconsistent results.1Justia U.S. Supreme Court Center. Hertz Corp. v. Friend, 559 U.S. 77 (2010) Volume of business in a state no longer matters. Even if 90% of a company’s revenue comes from one region, that region is irrelevant if the people running the company work somewhere else.
Headquarters Is Not Automatically the Answer
The nerve center will usually be a company’s headquarters, but not always. The Supreme Court drew this distinction carefully: the headquarters qualifies only if it is the actual center of direction, control, and coordination, not just a building with the company’s name on it.1Justia U.S. Supreme Court Center. Hertz Corp. v. Friend, 559 U.S. 77 (2010) If a company lists its headquarters in one state but the CEO and senior leadership actually work from an office in another, the nerve center follows the people making the decisions.
Evidence that matters includes where executives maintain their primary offices, where senior leadership holds regular strategy meetings, and where the company processes its most significant internal decisions.
Remote Work and Decentralized Leadership
The Supreme Court anticipated that some corporations “divide their command and coordinating functions among officers who work at several different locations, perhaps communicating over the Internet.”3Legal Information Institute. Hertz Corp. v. Friend The Court did not supply a separate test for those situations, but said the nerve center approach still “points courts in a single direction, towards the center of overall direction, control, and coordination.”
That gap has become more pressing as remote work has spread. When a CEO works from home in Connecticut, the CFO logs in from Colorado, and the board meets by video, choosing a single location is genuinely hard. Courts handling these disputes still look for whatever physical location anchors the most executive activity. A company that keeps a physical headquarters where at least some senior leadership works regularly will likely see that location treated as the nerve center, even if other executives are remote. A fully distributed company with no central office creates the kind of hard case the Court warned about, and the answer may come down to which location hosts the most concentrated decision-making.
Attempts to Manipulate the Location
The Court anticipated that some companies would try to game the system. If a corporation sets up a bare office with a computer, rents a mailbox in a favorable state, or designates the site of an annual executive retreat as its “headquarters,” courts will see through it. The opinion specifically warned that when the record reveals jurisdictional manipulation, the court should disregard the sham location and identify where actual direction, control, and coordination take place.4Supreme Court of the United States. Hertz Corp. v. Friend
A corporation has to prove its claimed nerve center is real. Lease agreements, payroll records, employee headcounts, and evidence that officers physically work at the location on a regular basis all come into play. A listing in a state’s corporate registry proves nothing on its own.
The Test Does Not Apply to LLCs or Partnerships
The nerve center test is for corporations. If you are dealing with an LLC, a partnership, or another unincorporated entity, the citizenship analysis works differently. Under longstanding Supreme Court precedent, an unincorporated entity takes the citizenship of every one of its members. An LLC with three members in three different states is a citizen of all three states.
This catches people off guard. A single-member LLC owned by a New York resident is a New York citizen regardless of where the LLC maintains its office. A partnership with partners in fifteen states is a citizen of all fifteen. Because these entities cannot use the nerve center shortcut, establishing diversity sometimes requires tracing membership through multiple layers of ownership, especially when an LLC is owned by another LLC.
Foreign Corporations
The same framework applies to companies incorporated outside the United States. Federal law treats a corporation as a citizen of every state or foreign country where it has been incorporated and of the state or foreign country where it has its principal place of business.2Office of the Law Revision Counsel. 28 USC 1332 – Diversity of Citizenship; Amount in Controversy; Costs A company incorporated in Germany with its nerve center in Illinois is a citizen of both. For multinationals that keep a U.S. headquarters, the analysis works the same way: the question is still where senior leadership actually directs, controls, and coordinates the business.
What Happens If the Analysis Is Wrong
Subject-matter jurisdiction cannot be waived. If a federal court realizes at any point in the litigation that diversity does not exist, it must act. In cases that were removed from state court, the federal court sends the case back to the state court where it was filed, regardless of how far the case has progressed.
This is where the nerve center test has practical bite. A defendant who removes a case to federal court carries the burden of proving jurisdiction, including establishing that the corporation’s principal place of business creates the necessary diversity. If that proof falls short, the case goes back. Months of discovery, motions, and trial preparation in federal court reset. Correctly identifying the nerve center at the start is not a technicality; it determines whether the entire case was filed in the right courthouse.