A certification is a credential awarded by a professional organization or industry body that confirms you have the knowledge and skills to perform a specific job or function. Unlike a license, which is issued by a government agency and legally required to work in certain occupations, a certification is voluntary. You earn it by meeting a set of requirements, typically a combination of education, work experience, and passing an exam, and it signals to employers that you’ve met a recognized standard of competency.
How a Certification Differs From a License or Certificate
These three terms get used interchangeably, but they mean different things. A license is issued by a state or federal government agency and gives you legal authority to work in an occupation. You cannot practice medicine, law, or nursing without one. A certification, by contrast, comes from a nongovernmental body and is not legally required to do your job. It’s a professional credential, not a legal one. The Bureau of Labor Statistics draws this line clearly: even when states call a teaching credential a “certification,” the BLS classifies it as a license because it’s government-issued and legally mandatory.
A certificate is different from both. It’s typically awarded after completing a training program or course of study. You finish the coursework, you get the certificate. A certification requires you to demonstrate competency through an independent evaluation process, usually a proctored exam, and you must renew it periodically to keep it active. A certificate generally has no renewal requirement.
What It Takes to Earn a Certification
The exact requirements vary by field and certifying organization, but the process almost always involves a combination of prerequisites and an exam. Some certifications require a minimum amount of work experience. For example, the federal government’s FAC-C contracting certification requires at least 12 months of full-time contracting experience. Others require specific coursework or training before you can sit for the exam.
The exam itself is the core of most certification programs. It’s typically a proctored, closed-book test designed to verify that you can apply knowledge in real scenarios, not just recall facts. The FAC-C exam, for instance, is 150 questions with a minimum passing score of 70%. Some certifications offer the exam online, though in-person testing is often preferred or required. Once you pass, you receive the credential and can use the associated professional designation after your name.
Some programs offer alternative pathways for experienced professionals. If you already have years of documented experience, you may be able to satisfy certain training requirements through a “fulfillment” process that evaluates your existing knowledge. However, the exam requirement itself is rarely waived.
Keeping Your Certification Active
A certification isn’t a one-time achievement. Nearly all certifications expire after a set period and require renewal. A common cycle is every five years, though some renew every two or three years. Renewal typically requires completing continuing education hours and paying a renewal fee.
The American Nurses Credentialing Center provides a good illustration of how this works in practice. Its certifications run on a five-year cycle with no grace period. To renew, nurses must complete 75 continuing education contact hours directly related to their certification specialty, with at least 60 of those hours coming from formally approved programs. Repeat courses don’t count, so you can’t take the same class twice and claim credit both times. Nurses must also complete at least one professional development activity from a list that includes options like academic coursework, professional presentations, research projects, preceptor hours, or logging 1,000 practice hours in their certification role.
The specifics vary across industries, but the underlying idea is the same everywhere: the certifying body wants proof that you’re staying current in your field, not coasting on knowledge you demonstrated years ago.
How to Tell If a Certification Is Credible
Not all certifications carry equal weight. The difference between a respected credential and a meaningless one often comes down to accreditation. Legitimate certifying organizations submit their programs to independent accrediting bodies that evaluate whether the certification meets established standards for fairness, rigor, and relevance.
The ANSI National Accreditation Board (ANAB), a subsidiary of the American National Standards Institute, is one of the largest such accrediting bodies, with more than 2,500 organizations accredited across roughly 80 countries. When a certification program is accredited by ANAB or a similar body, it means an independent evaluator has confirmed that the program follows recognized national or international standards. If you’re evaluating whether a certification is worth your time and money, checking whether the program holds accreditation from a recognized body is one of the fastest ways to gauge its legitimacy.
What a Certification Can Do for Your Career
Certifications serve two practical purposes: they help you get hired, and they help you earn more. For employers, a certification is a quick signal that a candidate has verified, up-to-date skills in a specific area. In fields where many candidates have similar degrees and general experience, a certification can be the differentiator that moves your resume to the top of the pile.
The salary impact can be substantial, particularly in technology and project management. Cybersecurity professionals who earn the Certified Information Systems Security Professional (CISSP) credential frequently report jumping from below $100,000 to well above it. Roles that value CISSP holders include cybersecurity engineers (averaging around $127,000) and IT risk managers (averaging around $145,000). The Project Management Professional (PMP) certification opens doors to roles like AI project manager (averaging $132,000) and head of operations (averaging roughly $152,000). AWS Certified Solutions Architects typically earn between $122,000 and $180,000.
The return on investment depends on your field. In some industries, certifications are table stakes: nearly every serious candidate has one, and not having it puts you at a disadvantage. In others, a certification is a genuine competitive edge that sets you apart. Before investing in any certification, look at job postings in your target role and see how often the credential appears as a requirement or preferred qualification. That will tell you more about its practical value than any marketing material from the certifying organization.
Costs and Time Commitment
Earning a certification requires a real investment. Exam fees alone range from under $200 for entry-level IT certifications to over $700 for advanced credentials. On top of that, you may need to pay for preparatory courses, study materials, and practice exams. Some employers cover these costs as part of professional development programs, so it’s worth asking before paying out of pocket.
The time commitment varies widely. Some certifications can be earned in a few months of focused study if you already have the required experience. Others take a year or more when you factor in prerequisite coursework, mandatory work experience, and exam preparation. Renewal costs add up over time too, since you’ll pay fees and invest time in continuing education every cycle.
Despite these costs, certifications tend to pay for themselves relatively quickly when they lead to higher-paying roles or faster hiring. The key is choosing a credential that’s genuinely valued in your industry rather than pursuing certifications simply to collect letters after your name.