Plan on 40 to 100 hours for the Series 66 on top of 80 to 150 for the Series 7, or about 3 to 5 months while working. Take the Series 7 first: it is a corequisite for the 66 and covers most of its product questions. The Series 66 has 100 scored questions in 2 hours 30 minutes, needs 73% to pass, and puts 45 of its questions on state law and ethics.
Most people searching for this are new advisers whose firm wants them registered as both a securities agent and an investment adviser representative. The usual route is the SIE, then the Series 7, then the Series 66. This page is about the Series 66 and how it fits after the 7. For the Series 7 on its own, see how long to study for the Series 7.
The Series 7 lets you sell securities as a general securities representative. The Series 66, written by NASAA, combines two state exams: the Series 63 (state law for securities agents) and the Series 65 (investment adviser representatives). With the Series 7 as its corequisite, passing the 66 qualifies you for both roles in most states, which is why fee-based advisers at broker-dealers so often take the pair.
The Series 66 has 100 scored multiple choice questions plus 10 unscored ones, 2 hours 30 minutes, and a passing score of 73%, according to Knopman and STC's 2024 learning guide. The questions follow NASAA's four sections:
| Section | Questions | Share of study time |
|---|---|---|
| Laws, regulations and guidelines, including unethical business practices | 45 | About 50% |
| Client investment recommendations and strategies | 30 | About 30% |
| Investment vehicle characteristics | 17 | About 10% after the Series 7 |
| Economic factors and business information | 8 | About 10% |
The Series 7 is the opposite shape. FINRA puts 91 of its 125 questions on investment products and recommendations, and it needs a 72 to pass. So the 7 teaches you the products and the 66 adds the law around advising on them.
For the Series 66 itself, the estimates depend on what you already know:
Add the Series 7, which takes most candidates 80 to 150 hours, and the pair comes to roughly 130 to 250 hours. At 10 to 15 hours a week that is 3 to 5 months, taken one after the other. With firm-sponsored study time it can be done in 6 to 8 weeks. For other licensing exams, see our exam study hours statistics.
This is the Uniform Securities Act and NASAA's rules: who must register (agents, broker-dealers, investment advisers and their representatives), which people and transactions are exempt, what the state administrator can do, and the long list of unethical practices for agents and advisers. None of it is on the Series 7 in this form. The exam tests exact definitions and exceptions, so it rewards memorisation more than reasoning. Turn every definition and exemption into a flashcard.
Thirty questions ask what you would recommend to a given client: suitability, asset allocation, portfolio management styles, retirement plans and taxation. The Series 7 covers suitability for brokerage customers; the 66 adds the adviser's view, such as fiduciary duty and fee-based accounts. Practise with scenario questions, because the exam gives you a client profile and asks for the best choice.
If your Series 7 is recent, the 17 investment vehicle questions are mostly review. The 8 economics questions cover topics such as the business cycle, financial statements and basic investment maths like returns and the time value of money. They are few, so a short focused review is enough.
This assumes 12 to 15 hours a week and a recent Series 7 pass.
If you hold the Series 7 and need both agent and adviser registration, the 66 is one exam instead of two. If you only need to act as a securities agent, the shorter Series 63 is enough; see how long to study for the Series 7 and 63. Requirements vary by firm and state, so check with your compliance team before you book.
State law is easy to recognise on the page and hard to recall in the exam. Quiz yourself instead of rereading: "Is a person with no place of business in the state and only institutional clients an agent?" Answer, then check. Spaced repetition keeps week one's definitions available in week four. See these active recall techniques and the guide to AI flashcards.
The law section is mostly definitions and exceptions, which suits flashcards well. Upload your Series 66 manual or notes to StudyCards AI and get flashcards that export to Anki, so you can review in short gaps between client calls. For more ways to cut note-taking time, see this guide to AI study tools for exams.
Try StudyCards AI FreeKnopman recommends 80 to 100 hours. Achievable says 30 to 40 hours can be enough with a strong background and 100 or more if the material is new. Candidates who have just passed the Series 7 usually land toward the low end, because the investment products are familiar.
Plan on roughly 130 to 250 hours in total: 80 to 150 for the Series 7 and 40 to 100 for the Series 66. Working 10 to 15 hours a week, that is about 3 to 5 months taken one after the other.
The Series 7 first. It is a corequisite for Series 66 registration, and its product knowledge covers most of the 66's investment vehicle questions, which leaves you free to focus on state law and client recommendations.
100 scored questions plus 10 unscored, in 2 hours 30 minutes, with 73% needed to pass. 45 questions cover laws, regulations and unethical business practices, 30 cover client investment recommendations, 17 investment vehicles and 8 economic factors.
It is shorter (100 scored questions against 125) and needs fewer hours, but it is denser in law. Nearly half the exam is state securities law and ethics, which has to be memorised precisely.
Usually not. The Series 66 combines the state law of the Series 63 with the adviser material of the Series 65, so with the Series 7 it qualifies you as both a securities agent and an investment adviser representative in most states. Check your firm's and state's requirements.
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