Series 66 (NASAA Series 66 — Uniform Combined State Law) — Free Online Mock Test
100 scored MCQ (+10 unscored pretest) in 150 minutes. Combined Series 63 + 65 — economic concepts, investment vehicles, recommendations, regulations. Must pass with 73%. · Official language: English.
Series 66 exam at a glance
Series 66 full-length mock tests
Attempt 50 full-length Series 66 mock tests, each a distinct question set built on the real 100-question, 150-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
Series 66 key facts & eligibility
| Conducting body | North American Securities Administrators Association (NASAA); exam administered by FINRA |
|---|---|
| Official website | finra.org ↗ |
| Mode | The Uniform Combined State Law Examination (Series 66) — a computer-based test of 100 scored questions (plus 10 unscored pretest) in 150 minutes at a Prometric centre. It combines the content of the Series 63 and Series 65 and qualifies you as both an investment adviser representative and a securities agent under state law. |
| Frequency | On demand, year-round. |
| Scoring & marking | You need to answer at least 73 of the 100 scored questions correctly (73%) to pass. It covers economic factors and investment vehicles, investment recommendations and strategies, laws/regulations/guidelines, and ethics for advisers and agents. |
| Language | English. |
Who is eligible for Series 66?
No prerequisite to sit the Series 66, but the Series 7 is a co-requisite: you must pass both the Series 66 and the Series 7 to register (you may take them in either order). Sponsorship rules follow the associated registration.
Last verified July 2026 against FINRA — Series 66. Always confirm current details on the official website before you register.
Series 66 section breakdown
The Series 66 mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
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Series 66 Full Exam (100 Q scored)
Series 66 scoring & marking scheme
Strategy: Series 66 has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: Series 66 (pass 73%).
How Series 66 is conducted
- Mode
- Test format
- Backtracking
- Mark for review
Series 66 time strategy
With 100 questions in 150 minutes, you have about 90 seconds per question on average. Successful candidates aim for the following pacing on each section:
- Series 66 Full Exam (100 Q scored)
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
Series 66 topics covered
Across the 50 Wrexa Edge variants of Series 66, the following topics appear most often (sample distribution from one variant):
Series 66 Full Exam (100 Q scored)
- FINRA — Supervision · 5
- Series 63 definitions · 5
- Securities Act of 1933 · 4
- Investment Company Act of 1940 · 4
- Series 79 — Rule 144 · 2
- Series 79 — Underwriting · 2
- FINRA — Communications · 2
- Securities Exchange Act of 1934 · 2
Series 66 difficulty calibration
Advanced tier. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep.
100 scored MCQ (+10 unscored pretest) in 150 minutes. Combined Series 63 + 65 — economic concepts, investment vehicles, recommendations, regulations. Must pass with 73%. · Official language: English.
Verified content — Wrexa Edge's Series 66 bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for Series 66
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
Expert take: what Series 66 really tests
The Series 66 combines the Series 63 and 65 into one 100-question exam at 73%, qualifying you as both an investment adviser representative and a securities agent — but the Series 7 is a co-requisite you must also pass to register. It is law-, regulation- and ethics-heavy, not product-mechanics-heavy (that is the Series 7).
Preparation tips
- Focus on the Uniform Securities Act, adviser regulation and fiduciary duty.
- Remember the Series 7 is a co-requisite — plan both exams.
- Study ethics and prohibited practices, which are heavily tested.
Common mistakes to avoid
- Studying product mechanics (Series 7 territory) instead of law and ethics.
- Forgetting that Series 66 alone does not register you — Series 7 is required too.
Series 66 study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- Study the Uniform Securities Act and state registration rules
- Learn adviser regulation and fiduciary duty
- Start Series 66 question practice
- Cover economic factors, investment vehicles and strategies
- Study ethics and prohibited practices
- Drill timed question sets
- Sit full 100-question timed mocks
- Push past the 73% pass mark
- Ensure Series 7 preparation is on track (co-requisite)
Where Series 66 can take you
A strong Series 66 result opens up these careers and higher-study paths:
- Adviser + agent registration
- Wealth-management roles
- Combines 63 and 65
- Fiduciary-duty foundation
Best books & official prep for Series 66
- Series 66 exam-prep (Kaplan, STC, Achievable) — Various
- NASAA Series 66 content outline — NASAA
Official practice: Study the NASAA Series 66 content outline and a prep course; focus on the Uniform Securities Act, adviser regulation and fiduciary duty rather than product mechanics (which the Series 7 covers).
Previous-year papers: No past papers are released; the NASAA outline plus a prep provider’s bank are standard.
Frequently asked questions
- What is the Series 66 exam pattern?
- NASAA Series 66 — Uniform Combined State Law contains 100 questions across 1 section: Series 66 Full Exam (100 Q scored). Total duration is 150 minutes (about 90 seconds per question).
- Does Series 66 have negative marking?
- No — Series 66 has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is Series 66 scored?
- Scaled score range: 100 to 1000. Series 66 (pass 73%).
- How can I practise Series 66 online for free?
- Wrexa Edge gives you 3 free full-length Series 66 mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of Series 66?
- Series 66 is rated Advanced difficulty on Wrexa Edge. Advanced-level: high-stakes exam with rigorous content depth. Expect 4-8 months of structured prep. 100 scored MCQ (+10 unscored pretest) in 150 minutes. Combined Series 63 + 65 — economic concepts, investment vehicles, recommendations, regulations. Must pass with 73%. · Official language: English.
- How long is the Series 66 exam?
- Series 66 runs for 150 minutes total. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in Series 66?
- Series 66 is split into: Series 66 Full Exam (100 Q scored). Each section is timed and weighted separately. 100 scored MCQ (+10 unscored pretest) in 150 minutes. Combined Series 63 + 65 — economic concepts, investment vehicles, recommendations, regulations. Must pass with 73%. · Official language: English.
- What tools or aids are allowed during Series 66?
- No special tools are required. Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
- Is the Series 66 test adaptive?
- No — Series 66 is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many Series 66 mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct Series 66 variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 5000 unique practice questions in the real test-day interface.
- Is there a free Series 66 test series 2026?
- Yes. The Wrexa Edge Series 66 test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are Series 66 previous year question–style papers included?
- Every Series 66 mock is modelled on the official exam pattern and the style of previous years' papers — the same 100-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free Series 66 mock test online?
- Wrexa Edge's Series 66 mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the Series 66 mock test on mobile?
- Yes. Series 66 mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the Series 66 syllabus?
- The Series 66 syllabus maps to its 1 section: Series 66 Full Exam (100 Q scored). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for Series 66?
- No prerequisite to sit the Series 66, but the Series 7 is a co-requisite: you must pass both the Series 66 and the Series 7 to register (you may take them in either order). Sponsorship rules follow the associated registration. Wrexa Edge focuses on realistic Series 66 practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the Series 66 exam and how should I prepare?
- Official Series 66 exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free Series 66 mocks with instant scoring so you can track your readiness week by week.
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