Professional License

As of 2025, about 21.6% of U.S. jobs require an occupational license. Professional licenses exist to protect consumers by ensuring that practitioners in high-stakes fields meet defined standards of education, training, and competency. An NBER study on the origins of occupational licensing found that licensing requirements were adopted earliest for occupations whose tasks pose risk to consumers, and the share of U.S. workers requiring a license has risen from about 5% in the 1950s to roughly 22%, reflecting the expansion of licensing across the economy. Without the appropriate license, practicing in a regulated profession is unlawful and can result in fines, civil liability, or criminal penalties.

How a professional license works

A professional license is issued by a state licensing board or regulatory agency that oversees a specific profession. Each board sets its own requirements, which typically include completing an accredited educational program, accumulating supervised work experience, and passing a standardized examination.

Once issued, the license is tied to the individual, not the business entity they work through. A licensed professional must renew their license on a schedule set by the licensing board, often every one to three years, and may be required to complete continuing education as a condition of renewal.

Operating without a required license or allowing a license to lapse can trigger disciplinary action by the licensing board, including suspension or permanent revocation.

Why a professional license matters

For practitioners, a professional license is a legal prerequisite for work and is associated with a nearly 9% wage premium in the private sector. It is not optional in regulated fields. Practicing without one exposes the individual to enforcement action and can invalidate contracts entered into for professional services.

For clients and the public, professional licensing provides a baseline assurance that the person providing a service has met verified standards. The Bureau of Labor Statistics distinguishes licenses from certifications precisely because licenses are issued by a government agency and convey legal authority to work. It also creates a formal accountability mechanism: licensing boards can investigate complaints and discipline practitioners who violate professional standards.

For business owners who employ licensed professionals, understanding licensing requirements is essential to maintaining legal compliance. A business that employs unlicensed practitioners in a regulated field may itself face penalties.

Common examples of professional licenses

Professional licensing requirements vary by state and profession. The 2025 State Occupational Licensing Index tracks 254 licensed occupations across all 50 states and D.C., but the following occupations are regulated in most U.S. jurisdictions.

• Healthcare professionals. Physicians, nurses, dentists, pharmacists, and physical therapists must hold active state licenses to practice. 75.7 percent of healthcare practitioners hold an active certification or license.
• Legal professionals. Attorneys must be admitted to the state bar, which functions as a form of professional licensure.
• Contractors and tradespeople. General contractors, electricians, and plumbers are licensed at the state or local level.
• Financial and real estate professionals. Real estate agents, mortgage brokers, and certain financial advisors require state-issued licenses.
• Mental health and social services. Licensed clinical social workers—now covered by a 31-state social work licensure compact—counselors, and psychologists must meet state-specific credentialing requirements.

The specific license required and the body that issues it depend entirely on the profession and the state in which services are provided.

Key characteristics of a professional license

Professional licenses share several defining features that distinguish them from other types of business authorizations.

• Individual, not entity-based. The license belongs to the person, not the business. A licensed architect who forms an LLC still holds the license personally.
• State-specific. A license issued in one state does not automatically authorize practice in another. Some states participate in reciprocity agreements or interstate compacts, but interstate practice typically requires separate licensure.
• Competency-based. Issuance depends on demonstrated qualifications, not just a registration fee or application.
• Subject to discipline. Licensing boards have the authority to investigate complaints, impose sanctions, and revoke licenses for professional misconduct.
• Renewal-dependent. Licenses expire and must be actively maintained through renewal and, in many cases, continuing education.

Professional license vs. business license

A professional license and a business license are not the same thing, though both may be required simultaneously. A business license authorizes a company to operate within a jurisdiction. It is a general operating permission tied to the business entity. A professional license authorizes a specific individual to practice a regulated occupation.

A licensed electrician, for example, may need both a personal professional license from the state and a business permit to operate their contracting business legally. The two requirements are independent of each other and issued by different authorities.

Considerations for licensed professionals forming a business

Licensed professionals who operate their own practices face an additional layer of compliance. In many states, certain professions, such as law, medicine, and accounting, cannot be conducted through a standard LLC or corporation. Instead, they must form a professional LLC (PLLC) or professional corporation (PC), which are entity structures specifically designed for licensed practitioners.

These specialized entity types typically require that all owners or members hold the relevant professional license. Forming the wrong type of entity can jeopardize both the business's legal standing and the individual's license.

Licensing requirements also intersect with ongoing business compliance. If a professional license lapses, the business may be unable to legally deliver its core services, making license renewal tracking a critical operational responsibility.

Related terms and next steps

Understanding professional licensing is often one part of a broader compliance picture for small business owners and self-employed practitioners. Related concepts worth reviewing include:

• Business license. The general operating authorization required for most businesses, apart from individual professional credentials.
• Business permit. A specific authorization for a particular activity, often required alongside a professional license.
• Professional LLC. A business entity structure available to licensed professionals in many states.

For businesses that need to identify which licenses, including professional licenses, apply to their specific operations and location, LegalZoom's business license report and management service can help map out federal, state, and local requirements in one place.

FAQs about professional licenses

What is the difference between a professional license and a professional certification?

A professional license is issued by a government agency and is legally required to practice in a regulated field; working without it is unlawful. A certification is typically awarded by a private or industry organization and demonstrates competency, but it does not carry the same legal authority; the Bureau of Labor Statistics draws this distinction precisely because only licenses convey government-backed permission to work.

Is a driver's license considered a professional license?

A standard driver's license is not a professional license. Professional licenses are tied to regulated occupations, fields where consumer safety or welfare is at stake, and are issued by state licensing boards with authority to set education, examination, and experience requirements as conditions of issuance.

Can a professional license from one state be used to practice in another state?

Not automatically, a license issued in one state authorizes practice only within that state's jurisdiction. Some professions have addressed this through interstate compacts or reciprocity agreements—the IMLC received over 152,000 license requests between 2017 and 2025—but in most cases, a practitioner who relocates or expands into a new state must obtain a separate license from that state's licensing board.

What happens if a professional lets their license lapse?

Allowing a license to expire without renewal can trigger disciplinary action by the licensing board, including suspension or revocation, and any professional services delivered during the lapse period may be legally unenforceable. For licensed professionals who operate their own businesses, a lapsed license can also disable the business from legally delivering its core services until the license is reinstated.

Who issues professional licenses, and how do you find the right licensing board?

Professional licenses are issued by state-level licensing boards or regulatory agencies, each of which oversees a specific profession. For example, a physician's license comes from a state medical board, while a real estate agent's license comes from a state real estate commission. The relevant board for any given profession can typically be identified through the state's department of consumer affairs, department of licensing, or equivalent regulatory authority.

Does a professional license belong to the individual or to the business they work for?

The license belongs to the individual practitioner, not to the business entity they work through or own. A licensed professional who forms an LLC or corporation still holds the license personally, which is why many states require licensed practitioners in fields such as law, medicine, and accounting to operate through a professional LLC or corporation rather than a standard business entity.