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Your FREE Series 66 (Uniform Combined State Law) Practice Test 2026 – 620+ Q&A

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The Series 66 (Uniform Combined State Law Examination) is a NASAA exam administered by FINRA that combines the state-law content of the Series 63 and Series 65 into one exam, qualifying you as both a securities agent and an Investment Adviser Representative when paired with the Series 7.[1]It’s heavily weighted toward laws and ethics, so the best way to prepare is realistic, timed practice — that’s what these free Series 66 practice tests and test prep are built for.[1] For complete Series 66 exam prep, work through the full-length exams and per-domain drills until you’re consistently above 75%.

Series 66 Exam at a Glance

NASAA states the Series 66 “consists of 100 scored questions” plus 10 unscored pretest questions, with no penalty for guessing.[2] Here are the key facts your practice should mirror:

Series 66 at a glance
DetailSeries 66
Scored questions100 (+10 unscored = 110 total)
Time limit2 hr 30 min (150 minutes)
Passing score73% (at least 73 of 100)
Exam fee$177
FormatMultiple choice (4 options)
PrerequisiteSeries 7 (co-requisite)
Guessing penaltyNone — answer every item
Result validity2 years (if not employed by a firm)
Retake waits30 days (1st–2nd fail), 180 days (3rd)

What Is on the Series 66 Exam?

The Series 66 covers four content areas: Laws, Regulations, and Guidelines (45%); Client Investment Recommendations and Strategies (30%); Investment Vehicle Characteristics (17%); and Economic Factors and Business Information (8%).[2]

NASAA weights each area by its number of scored questions, so laws and recommendations together are 75% of the exam — weight your studying the same way:

Series 66 content areas (100 scored questions)
Content areaScored questions% of exam
1. Economic Factors and Business Information88%
2. Investment Vehicle Characteristics1717%
3. Client Investment Recommendations and Strategies3030%
4. Laws, Regulations, and Guidelines, including Prohibition on Unethical Business Practices4545%

Series 66 Exam Weighting by Domain

This chart shows how NASAA weights the four content areas — drill the heaviest ones hardest. Use the Start Test button at the top to take a full, weighted practice exam or drill any single area.

Series 66 exam weighting (by content area)
Laws, regulations & guidelines45% · 45 Qs
Client recommendations & strategies30% · 30 Qs
Investment vehicle characteristics17% · 17 Qs
Economic factors & business information8% · 8 Qs

What Are the Requirements to Take the Series 66?

To take the Series 66, you must be sponsored by a FINRA member firm, which files a Form U4 to open your exam window — there is no minimum education or experience prerequisite.[3]

The Series 66 is a co-requisite with the Series 7: you need to pass both to register as a securities agent and an investment adviser representative.[1] You can take them in either order. Because it assumes the product knowledge from the SIE and Series 7, the Series 66 focuses on state law, ethics, and advisory practice.

How Do You Register for the Series 66?

You register for the Series 66 through your sponsoring firm, which enrolls you with FINRA and opens a 120-day window to schedule and sit the exam.[3] The exam fee is $177.[1]

You then book a seat at a Prometric test center or choose online proctoring, and you can reschedule subject to FINRA’s cancellation policy.[6]

What Should You Expect on Series 66 Test Day?

On Series 66 test day, arrive at least 30 minutes early with a valid, unexpired government-issued photo ID.[5] You may not bring any study materials, notes, or personal electronics into the room — a basic on-screen calculator and scratch material are provided.

You can also take the Series 66 from home via online proctoring, which requires a webcam, a system compatibility check, and a quiet, private space.[4] Practicing under the same conditions — quiet room, no notes, clock running — is the single best way to prepare.

What Is the Passing Score for the Series 66?

The passing score for the Series 66 is 73% — at least 73 of the 100 scored questions correct.[2]The 10 unscored pretest items are mixed in and don’t affect your score.

NASAA sets the passing standard with a formal standard-setting study rather than a simple curve.[5] You see your pass/fail result immediately when you finish at the test center.

How Hard Is the Series 66 Exam? (Pass Rate)

The Series 66 is shorter than the Series 65 but legally dense — 45% of the exam is laws, regulations, and ethics, and another 30% is recommendations and strategies. NASAA doesn’t publish an official pass rate, but industry sources commonly report it around 65%, meaning roughly one in three candidates fail.[7] The legal and ethics material is what trips up underprepared test-takers.

~65%
Pass rate
industry-reported
~35%
Fail rate
underprepared candidates
73%
Score needed to pass
73 of 100 scored

The takeaway: prioritize the laws and ethics material. Candidates who consistently score 75%+ on realistic, full-length practice exams are the ones who pass on the first try. If you do fail, FINRA requires a 30-day wait after a first or second attempt and 180 days after a third.[5]

How to Use Series 66 Practice Tests

The Series 66 rewards disciplined, rules-focused preparation.[7] Use these practice exams to reinforce concepts and polish your weak areas — and get the most out of them with these tips:

  • Recreate exam-day conditions. You can’t bring any materials into the exam, so practice the same way: a quiet spot, no notes, and the clock running.[1]
  • Practice timed and full-length. 110 questions in 150 minutes is well under 1.5 minutes each — build stamina with full-length runs, not just short sets.
  • Mirror the weighting. Laws and recommendations are 75% of the exam combined. If a practice set isn’t heavily weighted there, it isn’t representative — drill those areas hardest.
  • Answer everything. There’s no guessing penalty, so never leave a question blank. Build the “flag-and-move-on” reflex now.
  • Aim for 75%+. Passing is 73%, but build a buffer for exam-day nerves. A single 74% is not “ready.”
  • Track by area, not just total. A 78% overall can hide a 60% in laws and ethics — the biggest function. Review your results per content area and re-test your weakest one.
  • Use practice diagnostically, then for endurance. Early on, use the domain quizzes to find weak spots; in the final weeks, take full-length exams to build pacing and stamina.
Suggested pacing checkpoints (110 questions / 150 minutes)
CheckpointBy this time
Question 3750 minutes
Question 73100 minutes
Question 110150 minutes

Why Take the Series 66 Exam?

The Series 66, paired with the Series 7, qualifies you as both a securities agent and an Investment Adviser Representative in a single exam — the efficient path for advisers who will both transact securities and give advice for a fee.[8]It’s the most common combined registration at full-service firms, and these free practice exams are how you get there efficiently.

Conclusion

Passing the Series 66 on the first try comes down to thorough, realistic preparation — and practice exams are the single most effective tool for that. Work through these free full-length exams and domain quizzes, master the laws and ethics material especially, and build the stamina for a 150-minute sit. Practice until you’re consistently above 75%, and you’ll walk in ready.

Series 66 Practice Exam FAQ

The Series 66 has 100 scored multiple-choice questions plus 10 unscored pretest items, for 110 questions total. You must answer at least 73 of the 100 scored questions correctly (73%) to pass.

References

  1. 1.FINRA. “Series 66 – Uniform Combined State Law Exam.” FINRA.org, 2026.
  2. 2.NASAA. “Series 66 Exam Content Outline.” NASAA.org.
  3. 3.FINRA. “Enrolling for an Exam.” FINRA.org.
  4. 4.FINRA. “Taking Your Exam via Online Proctoring.” FINRA.org.
  5. 5.NASAA. “Exam FAQs.” NASAA.org.
  6. 6.FINRA. “Exam Cancellation and Rescheduling Policy.” FINRA.org.
  7. 7.Investopedia. “Series 66 Definition.” Investopedia.
  8. 8.Investopedia. “How to Get Your Securities Licenses.” Investopedia.
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