Short answer: the Series 66 is a NASAA law exam combining the Series 63 and 65 — 100 scored questions, 2 hours 30 minutes, 73% to pass. Most candidates need 40–60 hours and take it alongside the Series 7. Nearly half the exam is state securities law and ethics, so drill registration rules and prohibited practices.
How many hours to study for the Series 66?
Plan for 40–60 hours. Because it overlaps the Series 7, many candidates study the two together while the material is fresh.
How to pass the Series 66 on your first try
- Prioritize law and ethics — registration of advisers, agents and BDs, exemptions, and prohibited practices carry the most weight.
- Know the fiduciary standard and how it differs from suitability.
- Drill scenario questions on unethical practices and disclosure.
- Take timed mocks and aim above 80% before sitting.
How do you register for the Series 66?
- SIE + Series 7 are typically taken with it; the Series 66 qualifies you at the state level once paired with the Series 7.
- Enroll via FINRA (which administers NASAA exams) and schedule with Prometric.
- No firm sponsorship is required to sit the exam itself.
Series 66 exam format
- Questions: 100 scored (plus 10 unscored pretest).
- Time limit: 2 hours 30 minutes.
- Passing score: 73%.
- Administered by: NASAA (delivered through FINRA/Prometric).
Frequently asked questions
Is the Series 66 harder than the Series 63?
Yes. The Series 66 covers both the Series 63 and Series 65 material, so it is longer and broader.
Series 66 vs Series 65 — which should I take?
Take the Series 66 if you are also taking the Series 7 (common for advisors at broker-dealers). Take the Series 65 if you are not taking the Series 7 — it stands alone with no sponsorship.
Prep with the Passing Rate Series 66 course — full NASAA-aligned question bank, timed mock exams, and chapter readiness scoring.
Related guides
How to pass the SIE · How to pass the Series 7 · How to pass the Series 63 · How to pass the Series 65 · How to get a job in finance
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