Series 66 Exam Guide: The Combined State Law and Advisory License
The Series 66 exam (Uniform Combined State Law Examination) combines the Series 63 and Series 65 into a single test. It qualifies you as both a securities agent and an investment adviser representative at the state level — making it the most efficient path for professionals who sell securities and provide advice.
What Is the Series 66 Exam?
Developed by NASAA and administered by FINRA, the Series 66 covers both state securities regulations (blue sky laws) and investment advisory rules. Instead of sitting for the Series 63 and Series 65 separately, you take one exam that covers both.
The catch: you must also pass the Series 7 to use the Series 66 license. The Series 66 alone doesn’t authorize you to sell securities — it pairs with the Series 7 to give you full state-level authority.
Exam Format and Structure
| Detail | Specification |
|---|---|
| Administrator | NASAA (via FINRA) |
| Questions | 100 multiple-choice (+ 10 unscored pretest) |
| Time Limit | 2 hours 30 minutes |
| Passing Score | 73% |
| Prerequisite | Series 7 (can be taken before or after) |
| Cost | $177 |
| Retake Policy | 30-day wait after 1st/2nd fail; 180 days after 3rd |
Topics Covered
| Section | Weight | Key Areas |
|---|---|---|
| Economic Factors and Business Information | ~5% | Economic indicators, financial reporting, quantitative methods |
| Investment Vehicle Characteristics | ~20% | Stocks, bonds, options, mutual funds, alternative investments |
| Client Investment Recommendations and Strategies | ~30% | Suitability, asset allocation, portfolio management, tax considerations |
| Laws, Regulations, and Guidelines | ~45% | State registration, fiduciary duty, prohibited practices, ethical obligations |
How to Prepare for the Series 66
Plan for 40–60 hours of study over 3–5 weeks. The exam blends legal content from the Series 63 with advisory concepts from the Series 65, so it’s broader than either alone.
Regulatory content is king. About 45% of the exam tests laws and regulations. Know the Uniform Securities Act inside and out — registration requirements, exemptions, prohibited practices, and enforcement powers.
Advisory concepts matter. Unlike the Series 63, the Series 66 tests investment advisory rules — suitability obligations, fiduciary standards, and portfolio recommendations.
Use practice exams aggressively. The Series 66 is known for tricky wording. Many questions hinge on qualifiers like “except,” “always,” or “unless.” Timed practice builds the reading discipline you need.
Series 66 vs. Series 63 + Series 65
| Feature | Series 66 | Series 63 + 65 Separately |
|---|---|---|
| Number of Exams | 1 | 2 |
| Total Questions | 100 scored | 60 + 130 = 190 scored |
| Total Time | 2.5 hours | 1.25 + 3 = 4.25 hours |
| Total Cost | $177 | $147 + $187 = $334 |
| Prerequisite | Series 7 | None for either |
| Coverage | Identical | Identical |
Who Needs the Series 66?
The Series 66 is ideal for professionals who both sell securities and provide investment advice. This includes financial advisors at dual-registered firms, wealth managers, and financial planners who also execute trades. If you’re at a firm that’s both a broker-dealer and an investment adviser, the Series 66 + Series 7 is the standard combination.
If you only sell securities without providing advice, the Series 63 alone is sufficient alongside your Series 7.
If your firm hasn’t specified which state exam to take, default to the Series 66. It gives you maximum flexibility — you can sell, advise, and switch between broker-dealer and advisory roles without additional exams. The marginal extra study time pays for itself in career optionality.
Key Takeaways
- The Series 66 combines the Series 63 and Series 65 into one exam — saving time and money.
- 100 scored questions in 2.5 hours with a 73% passing score.
- You need the Series 7 as a prerequisite (can be taken before or after).
- 45% of the exam is regulatory content — state registration, fiduciary duty, and prohibited practices.
- Best for professionals who both sell securities and provide investment advice.
Frequently Asked Questions
Is the Series 66 harder than the Series 63?
Yes, because it covers more material — both state law and investment advisory concepts. The passing score is also slightly higher (73% vs. 72%). Plan for roughly double the study time compared to the Series 63.
Can I take the Series 66 before the Series 7?
Yes. You can pass the Series 66 first, but your registration won’t become effective until you also pass the Series 7. Some candidates find it helpful to tackle the Series 66 while the regulatory material is fresh.
Do all states accept the Series 66?
Most states accept the Series 66, but requirements vary. A few states have additional requirements or don’t accept it at all. Check your state’s securities regulator website or confirm with your firm’s compliance department.
What’s the pass rate for the Series 66?
The pass rate typically ranges from 70–75%. It’s lower than the Series 63 but manageable with structured preparation. Candidates who score above 80% on practice exams usually pass comfortably.
Should I take the Series 66 or the Series 63 and 65 separately?
Take the Series 66 if you have (or plan to get) the Series 7. It’s cheaper, faster, and covers identical material. The only reason to take them separately is if you want the Series 65 standalone (without the Series 7) to work purely as an investment adviser representative.