The minimum contacts test is the constitutional rule that decides whether a court in one state can exercise personal jurisdiction over a defendant from another state. Under the test, a court may hear a case against an out-of-state defendant only if that defendant has enough of a deliberate connection to the forum state that being sued there is neither surprising nor fundamentally unfair.1Legal Information Institute. Overview of Personal Jurisdiction and Due Process The rule comes from the Fourteenth Amendment’s Due Process Clause, and every modern personal jurisdiction fight is essentially an argument about what counts as “enough.”
Where the Test Comes From
Before 1945, the rule was simpler and much narrower. Under Pennoyer v. Neff (1878), a state court could only bind a defendant who was physically inside the state’s borders or who owned property there.2Justia. Pennoyer v. Neff, 95 U.S. 714 (1878) That worked when most business was local. It broke down once companies started selling across state lines without ever setting foot in the buyer’s state.
The Supreme Court rewrote the framework in International Shoe Co. v. Washington. Washington tried to collect unemployment taxes from a shoe company headquartered in Missouri, and the company said Washington had no power over it. The Court held that due process requires only that a defendant have “certain minimum contacts” with the forum state “such that the maintenance of the suit does not offend traditional notions of fair play and substantial justice.”1Legal Information Institute. Overview of Personal Jurisdiction and Due Process That phrase replaced the old physical-presence requirement with a flexible inquiry that courts still use today.
One point worth flagging before going further: the Constitution sets the outer limit, but a state also has to pass a law (a long-arm statute) authorizing its courts to reach out-of-state defendants in the first place. Some long-arm statutes list specific triggering acts; others simply extend jurisdiction as far as the Constitution allows.3Legal Information Institute. Due Process and Personal Jurisdiction: Doctrine and Practice In a narrow-statute state, a defendant’s conduct can satisfy minimum contacts and still fall outside the statute.
The Core Requirement: Purposeful Availment
Minimum contacts means more than any contact at all. The defendant has to have reached into the forum state on purpose. In Hanson v. Denckla, the Supreme Court put it this way: “it is essential in each case that there be some act by which the defendant purposefully avails itself of the privilege of conducting activities within the forum State, thus invoking the benefits and protections of its laws.”4Justia. Hanson v. Denckla, 357 U.S. 235 (1958)
The flip side of that rule is just as important. The “unilateral activity” of someone else cannot create jurisdiction over the defendant. If a customer buys a product in Ohio and drives it to California, that movement doesn’t give California courts power over the Ohio seller. What matters is what the defendant did, not where someone else carried the result.
What counts as purposeful availment is fact-specific. Advertising to residents of a state, entering ongoing contracts with people there, setting up distribution channels aimed at that market: all of these qualify. Selling something in one state with no intent or effort to reach a second state does not.
Two Kinds of Jurisdiction Contacts Can Support
Once contacts exist, they can support one of two very different kinds of jurisdiction. The distinction controls what claims a court can actually hear.
General Jurisdiction: Any Claim, But Hard to Establish
General jurisdiction lets a court hear any claim against a defendant, even one with no connection to the state. The bar is high. In Goodyear Dunlop Tires v. Brown, the Supreme Court held that general jurisdiction over a corporation exists only where its connections are “so continuous and systematic as to render it essentially at home” in the state.5Library of Congress. Goodyear Dunlop Tires Operations, S.A. v. Brown, 564 U.S. 915 (2011) For individuals, home means the home state. For corporations, the paradigm forums are the state of incorporation and the state of principal place of business.
Daimler AG v. Bauman made clear how narrow this is. Plaintiffs sued Daimler in California over alleged human rights abuses in Argentina, pointing to the extensive California operations of a Daimler subsidiary. The Court rejected the argument, holding that even substantial in-state business does not make a company “at home” in a state unless it is the functional equivalent of being incorporated or headquartered there.6Justia. Daimler AG v. Bauman, 571 U.S. 117 (2014)
Specific Jurisdiction: Only Claims Related to the Contacts
Specific jurisdiction is narrower and comes up far more often. It applies only when the lawsuit arises out of or relates to what the defendant did in the forum state. A driver who causes an accident while passing through can be sued in that state over the accident, but not over an unrelated business dispute from back home.
Two recent decisions sharpen the boundary. In Bristol-Myers Squibb Co. v. Superior Court, hundreds of plaintiffs from around the country joined a California lawsuit over a blood-thinning drug. The Court held that California had no specific jurisdiction over the claims of non-resident plaintiffs, because those plaintiffs had not bought the drug in California, had not been prescribed it there, and had not been injured there. The fact that the same drug was sold to other people in California was irrelevant to their claims.7Supreme Court of the United States. Bristol-Myers Squibb Co. v. Superior Court of California, 582 U.S. 255 (2017) There has to be a direct link between the forum and the specific dispute.
Then in Ford Motor Co. v. Montana Eighth Judicial District Court, plaintiffs injured by Ford vehicles sued Ford in Montana and Minnesota even though their specific vehicles had been designed, built, and originally sold elsewhere. The Court upheld jurisdiction because Ford had marketed, sold, and serviced those same models in those states for years. The lawsuit did not have to be caused by Ford’s in-state contacts; it was enough that it “related to” them.8Justia. Ford Motor Co. v. Montana Eighth Judicial District Court, 592 U.S. (2021) The word “or” in “arise out of or relate to” does real work.
The Second Step: Fair Play and Substantial Justice
Even with sufficient contacts, a court applies a second check: is it reasonable to make this defendant litigate here? The Supreme Court set out the factors in Burger King Corp. v. Rudzewicz:9Justia. Burger King Corp. v. Rudzewicz, 471 U.S. 462 (1985)
- The burden on the defendant, including travel, local counsel, and distance from evidence and witnesses.
- The forum state’s interest in the case, such as protecting its own residents.
- The plaintiff’s interest in getting relief without being forced to a less practical forum.
- The judicial system’s interest in efficient resolution.
- The shared policy interests of multiple states.
In practice, this reasonableness step rarely overrides a solid finding of purposeful contacts. Burger King itself noted that a defendant who has purposefully directed activities at a forum will seldom be able to show that litigation there is so unreasonable as to defeat jurisdiction. The fairness check matters most in borderline cases where the contacts are thin to begin with.
Websites, Online Activity, and the Effects Test
A common modern question: does running a website that people in every state can see expose a business to jurisdiction everywhere? The short answer is no.
An early federal case, Zippo Manufacturing Co. v. Zippo Dot Com, Inc., proposed a sliding scale based on how interactive a website is: fully transactional sites supported jurisdiction, purely passive informational sites did not, and interactive middle-ground sites depended on the degree of commercial exchange.10Justia. Zippo Mfg. Co. v. Zippo Dot Com, Inc., 952 F. Supp. 1119 (W.D. Pa. 1997) Modern courts have increasingly folded that analysis back into standard purposeful-availment doctrine. The question is whether the defendant targeted the forum state through its online conduct, not simply how clickable the site is.
When the online conduct is itself a tort (defamation, fraud, intellectual property theft), the “effects test” from Calder v. Jones can apply. In Calder, a Florida reporter and editor wrote a defamatory article about an entertainer who lived and worked in California. The Supreme Court held that California had jurisdiction because the defendants had intentionally aimed their conduct at California, knew the article would land hardest there, and knew the plaintiff would feel the injury in that state.11Justia. Calder v. Jones, 465 U.S. 783 (1984)
But the Court narrowed this in Walden v. Fiore, holding that the defendant’s conduct must create a connection with the forum state itself, not just with a person who happens to live there.12Justia. Walden v. Fiore, 571 U.S. 277 (2014) The plaintiff cannot be the only link. Posting something that harms a forum resident is not enough on its own; the content or conduct has to be aimed at the state in some meaningful way beyond the plaintiff’s address.
When the Minimum Contacts Test Doesn’t Apply
Not every jurisdictional question runs through the minimum contacts analysis. Two situations bypass it entirely.
The first is consent. A forum selection clause in a contract is advance consent to be sued in the chosen state. In Carnival Cruise Lines, Inc. v. Shute, the Supreme Court enforced a clause in a cruise ticket requiring all disputes to be litigated in Florida, even though the passengers lived in Washington and bought their tickets there.13Justia. Carnival Cruise Lines, Inc. v. Shute, 499 U.S. 585 (1991) Forum selection clauses turn up in employment agreements, software licenses, and credit card terms, and challenging jurisdiction in the designated forum will almost always fail.
The second is physical presence. If you are served with a lawsuit while physically in a state, that state’s courts have jurisdiction over you for that case, even if the dispute has nothing to do with your activities there. The Supreme Court unanimously affirmed this in Burnham v. Superior Court, where a New Jersey resident was served with divorce papers during a short visit to California to see his children.14Justia. Burnham v. Superior Court, 495 U.S. 604 (1990) This “tag” jurisdiction applies only to individuals, not corporations.
How to Challenge Personal Jurisdiction
If you are sued in a state you believe has no power over you, how you respond is critical. Get it wrong and you lose the objection.
In federal court, the standard move is a motion to dismiss under Federal Rule of Civil Procedure 12(b)(2) for lack of personal jurisdiction.15Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections: When and How Presented Timing is strict. If you file any pre-answer motion without including the jurisdictional objection, you waive it. If you skip the pre-answer motion and go straight to an answer, the defense has to appear in that answer or in an amendment made as a matter of course. Miss both windows and the defense is gone.
Many state courts work similarly, but some still use the older concept of a “special appearance,” which lets a defendant appear only to contest jurisdiction without being treated as having submitted to the court. In those states, filing a general appearance before raising the challenge signals acceptance of the court’s authority and waives the objection.
Ignoring the lawsuit is almost always the wrong move. If the court ultimately decides it does have jurisdiction, it can enter a default judgment against you without ever hearing your defense. A judgment entered by a court that truly lacked jurisdiction is technically void and can be attacked later, but doing that after the fact is expensive and uncertain. The safer path is to appear through a proper jurisdictional challenge and let the court rule on the question before anything else happens.