ABA Model Rule 5.5 on the multijurisdictional practice of law sets the terms under which a lawyer licensed in one U.S. jurisdiction can do legal work in another. The default is a flat prohibition, but the rule builds in a handful of exceptions: four safe harbors for temporary work, a path for in-house counsel, and an opening for federally authorized practice. Everything else is unauthorized practice, and the consequences reach beyond bar discipline into fee forfeiture, insurance gaps, and criminal liability.
The Baseline Prohibition
Rule 5.5(a) states the rule in one line: a lawyer cannot practice law in a jurisdiction that has not authorized them to do so, and cannot help anyone else do it either.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law The second half of that sentence catches licensed attorneys who lend their name or credentials to enable unlicensed practice by someone else.
Rule 5.5(b) adds two specific bars for lawyers not admitted in the jurisdiction. You cannot open an office or maintain a “systematic and continuous presence” there for the purpose of practicing law, and you cannot hold yourself out to the public as admitted there. Websites, letterhead, business cards, and email signatures all have to reflect where you are actually licensed.
The “systematic and continuous presence” language is broader than it looks. According to the official comments, that presence can exist even when the lawyer never physically sets foot in the jurisdiction.2American Bar Association. Comment on Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law Regularly soliciting clients in another state through targeted advertising, repeatedly taking matters there, or running a steady stream of virtual meetings with local clients can trigger the rule without a rented office in sight.
The Four Temporary Safe Harbors
Rule 5.5(c) recognizes that legal work often crosses state lines, and it identifies four situations where a lawyer admitted in one U.S. jurisdiction can provide legal services on a temporary basis in another. The lawyer must not be disbarred or suspended anywhere.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law
- Working with a locally admitted lawyer who actively participates in the matter. The local lawyer has to share responsibility, not just supply a bar number.
- Handling work connected to a pending or potential tribunal proceeding when the lawyer is authorized to appear or reasonably expects to be. This covers preparation, not only the hearing itself.
- Providing services in a pending or potential arbitration, mediation, or similar proceeding, as long as the work grows out of the lawyer’s practice in a jurisdiction where they are admitted.
- Providing other temporary services that arise out of or are reasonably related to the lawyer’s home-jurisdiction practice, even without any tribunal or ADR proceeding.
What Counts as Temporary
There is no bright-line test. The comments say services can be temporary even if they recur or extend over a long period.2American Bar Association. Comment on Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law A single protracted negotiation or lengthy piece of litigation in another state can still be temporary. The question is whether you are building a practice in the host state or servicing an existing practice that happens to reach into it.
What Reasonably Related Means
The fourth safe harbor is the most flexible, and the comments identify several factors that shape it. A pre-existing relationship with the client helps, as does the client living in or having substantial ties to the lawyer’s home state. It also matters whether the matter itself has a significant connection to the home jurisdiction and whether a substantial portion of the work is being done from there.2American Bar Association. Comment on Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law A lawyer with recognized expertise in a specialized area of federal, international, or nationally uniform law has stronger footing under this exception even when the particular matter’s ties to the home state are limited.
Pro Hac Vice Admission
The tribunal safe harbor usually runs through pro hac vice, meaning “for this occasion only.” The lawyer files a motion asking the court to allow their appearance in a specific case, and most jurisdictions charge a fee that ranges from nothing to several hundred dollars. The order covers that case alone and does not function as a general license.3Legal Information Institute. Pro Hac Vice
Courts expect the privilege to be used sparingly. Some jurisdictions cap the number of times a single lawyer can appear this way within a set period, sometimes limiting admissions to a handful of cases in five years.3Legal Information Institute. Pro Hac Vice Repeated pro hac vice appearances in one state can itself look like the systematic presence Rule 5.5(b) forbids, so heavy use is its own risk.
Ongoing Practice Without Local Admission
Rule 5.5(d) allows two categories of continuous practice in a jurisdiction where the lawyer is not admitted.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law
In-House Counsel
A lawyer admitted in any U.S. or foreign jurisdiction may provide legal services to their employer and the employer’s organizational affiliates without a local license. The privilege has real limits. The lawyer cannot appear in state court without separate pro hac vice admission, and cannot represent individual employees, officers, or shareholders of the company. If the lawyer is admitted only in a foreign country, any advice on U.S. law must rest on the guidance of a lawyer licensed in the relevant U.S. jurisdiction, and the foreign lawyer must not be disbarred, suspended, or the equivalent under home-country rules.
Federally Authorized Practice
A lawyer may also practice on an ongoing basis in a jurisdiction where they are not admitted when federal law or regulation authorizes it. Patent practice before the USPTO, immigration work, tax matters before the IRS, and Social Security disability proceedings are common examples. A lawyer admitted in any state can handle these matters regardless of office location, subject to the ethical rules of both the home jurisdiction and the federal agency.
State Registration for In-House Counsel
Rule 5.5(d) opens the door, but many states require in-house counsel to register with the local bar or supreme court before walking through it. Registration typically produces a limited license that restricts the lawyer to serving the corporate employer and its affiliates and does not authorize outside client work.4Association of Corporate Counsel. U.S. Multi-jurisdictional Practice Tracker
Common features across state programs include a requirement of good standing in at least one U.S. jurisdiction, annual renewal, and a duty to notify the state bar within a set window (often 30 days) if the lawyer leaves the qualifying employer. Changing jobs terminates the registration, which then has to be renewed under the new employer. Some states set a specific deadline for initial registration, such as 90 days from the start of employment. Registered in-house counsel are subject to the disciplinary authority of the state where they work, just like fully admitted lawyers.4Association of Corporate Counsel. U.S. Multi-jurisdictional Practice Tracker Not every state requires registration, and the details vary. Confirm the rule in the state where you will actually sit before assuming Rule 5.5(d) alone is enough.
Remote Work From a State Where You Are Not Licensed
Working from home in a state where you have no bar admission became a widespread question, and ABA Formal Opinion 495 answered it. Lawyers may practice the law of their licensing jurisdiction from a physical location where they are not licensed, as long as no specific state regulation prohibits it.5American Bar Association. Formal Opinion 495 Maintaining Compliance with Ethical Rules from Your Couch
The opinion attaches conditions. You cannot hold yourself out as licensed in the state where you sit and cannot solicit clients there. Letterhead, business cards, and email signatures must reference the office in the licensing jurisdiction, not the local home address. Duties of technological competence, diligence, and client communication continue to apply wherever you happen to work from.
Opinion 495 is advisory. States are not bound by ABA opinions, and some have issued their own guidance that runs narrower or broader. Before settling into remote work from another state for anything more than a short stretch, confirm the host state does not treat the arrangement as the kind of systematic presence that requires a local license.
What Happens When You Cross the Line
Unauthorized practice is a criminal offense in most states, typically a misdemeanor. Penalties can include fines, and repeat violations can be charged more seriously, with the possibility of jail time in some states. Courts may also issue injunctions barring further unauthorized activity.
Fee forfeiture is often the sharpest consequence. Courts have long held that lawyers who practice without proper authorization can be required to return the fees they collected. Some order full forfeiture of every dollar earned during the unauthorized work; others weigh factors like bad faith and actual harm to the client. The prospect of losing an entire fee on a long, complex matter is what makes Rule 5.5 a practical necessity rather than a theoretical concern.
Malpractice insurance is another exposure. Many professional liability policies are jurisdiction-specific, and coverage for claims arising from work performed where the lawyer was not authorized can be limited or excluded outright. Losing both the fee and the coverage on a single matter is the worst-case scenario, and it is a real one.
Discipline itself can come from more than one direction. Under Rule 8.5, a lawyer is subject to the disciplinary authority of every jurisdiction where they are admitted and any jurisdiction where they provide or offer to provide legal services, admitted there or not.6American Bar Association. Model Rules of Professional Conduct Rule 8.5 Disciplinary Authority Choice of Law A single misstep during a temporary appearance can produce parallel proceedings in two states, and ignorance of the host state’s ethical rules is not a defense.