What Is the Series 66 Pass Rate?
Unlike the SIE, where FINRA published early pass rate data (74% for first-time candidates), NASAA does not publish official pass rates for the Series 63, 65, or 66 exams. Every number you see online is an estimate.
That said, the estimates are fairly consistent. Prep providers, tutoring firms, and candidate surveys generally put the Series 66 first-time pass rate at 65–70%. That’s lower than the SIE (74%) and roughly in line with the Series 65.
Why is it lower? Two reasons. First, the candidate pool is smaller and more self-selected — these are people already working at firms, often studying while working full-time. Second, the content is genuinely harder than the SIE, with more nuanced regulatory scenarios and a higher passing threshold (73% vs. 70%).
Exam Structure at a Glance
| Detail | Series 66 |
|---|---|
| Total Questions | 110 (100 scored + 10 unscored) |
| Time Limit | 150 minutes (2 hours 30 min) |
| Passing Score | 73 out of 100 scored questions (73%) |
| Exam Fee | $177 |
| Co-requisite | Series 7 (can take in any order) |
| Administered By | FINRA (on behalf of NASAA) at Prometric centers |
The 10 unscored questions are randomly mixed in — you won’t know which ones they are. Treat every question as if it counts.
The Four Sections and Their Weights
Nearly half the test is regulations:
| Section | Weight | ~Questions |
|---|---|---|
| I. Economic Factors & Business Information | 8% | 8 |
| II. Investment Vehicle Characteristics | 17% | 17 |
| III. Client Investment Recommendations & Strategies | 30% | 30 |
| IV. Laws, Regulations & Guidelines | 45% | 45 |
Section IV alone accounts for 45 questions. If you’re weak on IA registration thresholds, administrator powers, exempt securities vs. exempt transactions, or fiduciary duty vs. Reg BI, you cannot pass this exam.
What Actually Makes the Series 66 Hard
The Uniform Securities Act is its own world. The SIE and Series 7 test federal securities law. The Series 66 tests state securities law — specifically the Uniform Securities Act as interpreted by NASAA. The terminology overlaps but the rules differ.
The fiduciary standard is tested from every angle. The exam gives you scenarios where you must distinguish fiduciary obligations from Reg BI obligations, identify custody triggers, determine if soft dollar arrangements are permissible, and decide if a political contribution violates pay-to-play rules.
The "exempt" questions are deliberately tricky. Exempt securities vs. exempt transactions. A U.S. government bond is an exempt security. A private placement is an exempt transaction. Antifraud provisions apply to both, always.
The math is lighter but the application is deeper. You’ll need CAPM, current yield, duration, and cost basis scenarios. The formulas are simpler; the fact patterns around them are more complex.
How It Compares to Other Exams
| Exam | Pass Rate | Passing Score | Questions | Time |
|---|---|---|---|---|
| SIE | 74% | 70% | 75 | 105 min |
| Series 7 | ~72% | 72% | 125 | 225 min |
| Series 66 | ~65–70% | 73% | 100 | 150 min |
| Series 65 | ~65–70% | ~71% | 130 | 180 min |
The Series 66 has the highest passing score threshold of any FINRA/NASAA exam at 73%. You can only miss 27 scored questions.
How to Prepare: A Realistic Plan
Study 40–80 hours over 4–8 weeks. If you just passed the Series 7, some content overlaps, so 40–50 hours may suffice. If months have passed, budget 60–80 hours.
Start with Section IV (Laws & Regulations). It’s 45% of the exam and the most unfamiliar content. Spend your first 2–3 weeks here.
Then hit Section III (Client Recommendations). This is 30% and includes tax, retirement, estate planning, CAPM, and performance measurement.
Use Sections I and II for score padding. Together they’re 25%. Quick wins if you know your yields and economic indicators.
Take timed practice exams. Aim for 80%+ consistently before scheduling. Our Series 66 practice suite includes 11 difficulty-scaled exams (starting at $2 each) and a 3,100+ question QuizBuilder for targeted topic drilling — the full bundle is $45.99. The free Series 66 course covers every section with interactive tools and concept checks.
The Bottom Line
The Series 66 is a real exam with a meaningful failure rate. But it’s entirely passable with focused preparation — especially if you approach the Uniform Securities Act and fiduciary obligations as genuinely new material rather than a Series 7 review.
The candidates who fail are almost always the ones who underestimate Section IV. Don’t be that candidate.