The Two Exams: Trade vs. Business & Law

Most contractor licenses require passing up to two exams.

1. The trade / technical exam

Tests your knowledge of the construction trade and applicable codes (building, electrical, etc.). This is the exam the NASCLA Accredited Exam can replace in participating states (see the NASCLA course).

2. The business & law exam

Tests running a contracting business in that state: contracts, liens, licensing law, labor, taxes, safety, and state-specific rules. This is state-specific and generally must be taken in each state — NASCLA does not replace it.

Preparing

• Use the state's candidate information bulletin for the content outline and reference list.
• Exams are usually administered by a vendor (e.g., PSI/Prometric).
• Budget study time for both — the business & law portion trips up many skilled tradespeople.

Going Deeper (Intermediate)

Most contractor licenses require passing two exams: a trade exam (your craft's technical knowledge and code) and a business & law exam (contracts, licensing law, employment, finance, liens, and safety). You must prove you can both build it and run a responsible business.

Advanced / Pro-Level

Preparing for each:

• The trade exam is code/reference-based (often open-book, with calculations) — study the adopted code and the candidate handbook's reference list.
• The business & law exam covers contracts, lien law, payroll/tax, workers' comp, OSHA, estimating, and financial responsibility — i.e., everything that sinks unprepared contractors.
• Use prep courses, know whether it's open or closed book, and the passing score.
• Some states waive the trade exam for certain classes or accept NASCLA. Both exams exist to protect the public by ensuring competence and business responsibility.

Practice Challenge

Why does a contractor's license usually test business and law, not just trade skill? (Answer: most contractor failures and consumer harms come from the business side — bad contracts, unpaid subs/liens, mismanaged money, payroll/tax and safety violations — so the business & law exam ensures licensees can run a responsible, solvent, legal business, not just do good technical work.)

In Practice

A skilled tradesperson aces the trade exam but fails the business-and-law portion — the part they didn't study. Both matter; study the business side too.

Common Mistakes to Avoid

• Underestimating the business & law exam
• Not using the candidate bulletin to prep
• Cramming at the last minute

Takeaway: Study for the business & law exam too — it trips up skilled tradespeople.

Educational content — not legal, accounting, or licensing advice. Rules vary by state and change; verify with the licensing board and a CPA.