Uniform Combined State Law Exam (Series 66) Exam Guide

Exam Content and Scope

The Series 66 tests knowledge of uniform state securities laws, regulations, and ethical standards governing investment professionals. The examination content is developed by NASAA and covers the regulatory frameworks that investment adviser representatives and securities agents must understand to operate lawfully at the state level.

Prerequisites and Eligibility

Candidates planning to register as investment adviser representatives must first pass the Series 7 exam before using the Series 66 for that registration. Alternatively, the Series 66 can be used as a standalone credential for securities agents working with broker-dealers. There are no formal educational requirements, though a solid understanding of securities regulations, market structures, and compliance practices is essential for success.

What Candidates Need to Know

Prospective test-takers should be prepared for detailed questions on state law principles, ethical conduct, anti-fraud provisions, and regulatory responsibilities. The exam assumes foundational knowledge of securities markets and focuses specifically on the state-level regulatory landscape and professional standards that govern investment professionals' conduct.

The Series 66 registration fee is $177 USD. This is a one-time fee per examination attempt. Candidates should budget for this cost when planning their certification timeline.

If a candidate does not achieve a passing score on their first attempt, they will need to pay the registration fee again for each retake. FINRA and testing centers may also charge additional fees for rescheduling or administrative services, so candidates should review the complete fee structure when scheduling their exam.

The Series 66 consists of 100 multiple-choice questions and must be completed within 150 minutes. The exam is delivered at Prometric test centers. Since 1 April 2022 NASAA no longer offers the Series 63, 65 and 66 through online testing, so there is no at-home option unless you hold an approved testing accommodation. A 30-minute appointment buffer is allocated before the scheduled exam start time.

To pass the Series 66, candidates must achieve a score of at least 73 out of 100 questions correct. The exam is delivered via computer, allowing for efficient test administration and immediate score reporting at the conclusion of the test session.

The Series 66 exists to save you a sitting. It is the Uniform Combined State Law Examination, and NASAA created it at the request of industry so that employees would not have to take two exams. What it is not — and this is where most candidates' mental model breaks — is a single qualification. In FINRA's records it behaves as two, and they expire separately.

The exam as NASAA specifies it

The Series 63 is 60 scored questions inside 65 administered — the extra five are unscored pretest items, so its passing standard of 43 is measured against 60, not 65.

Content is developed by NASAA; FINRA administers the sitting. That split matters more than it looks, because the rules you are subject to come from NASAA while the room you sit in is FINRA's — and the two organisations publish different retake policies. More on that below.

Note the passing standards are stated as raw item counts, not percentages. 73 of 100 happens to be 73%, which makes the Series 66 the one exam in this family where the percentage and the item count coincide — a coincidence that has taught a lot of candidates to think of the Series 65 as "70%" when its standard is 92 of 130.

In CRD it is two credits, not one

This is the part worth reading twice. NASAA's own FAQ states it plainly: when combined with a valid SIE and Series 7, the Series 66 "qualifies you as if you had passed both the 63 and 65", and FINRA's CRD system reflects that by granting a Series 63 exam credit to someone registering as an agent of a broker-dealer and a Series 65 exam credit to someone registering as an investment adviser representative.

Then the sentence almost nobody quotes: "the Series 66 does not maintain its validity as a single exam; instead, each of these component exam credits maintain their validity separately, on the basis of one's registration history, just as the underlying exams normally do."

Read that against how exam validity actually works — a pass expires unless you register, and once registered stays valid while your registration does — and the consequence follows. If your registration history keeps one component alive and not the other, you can end up holding a live Series 63 credit and a lapsed Series 65 credit from a single exam you passed once. The certificate on your wall says Series 66; the record does not work that way.

The practical instruction is to stop thinking of the Series 66 as a thing you hold and start thinking of it as two things you hold. When you are checking whether you are still qualified for a role, check the credit that role needs, not the exam you sat.

What you must also hold

The Series 66 is the only exam in this family with co-requisites. NASAA is explicit that a valid SIE and Series 7 are co-requisites for registering using the Series 66 — which means the Series 66 alone qualifies you for nothing at all.

Two consequences follow, and they point in opposite directions:

• If you already have the SIE and Series 7, the Series 66 is the efficient route: one 150-minute sitting instead of a Series 63 and a Series 65 separately.
• If you do not, the Series 66 is the wrong exam. The Series 65 stands alone with no prerequisite, no co-requisite and no sponsoring firm required. Someone entering the industry without a broker-dealer behind them should be looking at the 65, not the 66, however attractive "two exams in one" sounds.

Order does not matter. NASAA's FAQ answers this directly: "You can take the tests in any order; you just need to have passed both at the time you seek state registration." So a candidate can sit the Series 66 before the Series 7 without penalty — the sequencing question is about study efficiency, not eligibility.

No professional designation waives it

Holders of a CFP, ChFC, CFA, PFS or CIMA can substitute the designation for the Series 65 in most states. That waiver does not extend here, and NASAA explains why in one line: "having a qualifying professional designation will only waive the Series 65 requirement. That is because passing the Series 66 is equivalent to having passed both the Series 63 and Series 65."

In other words the waiver covers half of what the Series 66 is. A designation holder who also needs the state-agent side still needs the Series 63 — and taking the Series 66 to get both is a route the waiver cannot shorten.

Which exam your situation actually calls for

Registering, scheduling and exam day

Enrollment runs through FINRA even though the content is NASAA's: sponsored candidates are filed by their firm, and the enrollment opens a scheduling window you book against.

This exam is test-centre only. NASAA states that "As of April 1, 2022, NASAA no longer offers the Series 63, Series 65 and Series 66 qualification exams through online testing", and FINRA's enrollment guidance says these exams "can only be taken at a test center, being available online only for candidates requiring a testing accommodation". Guidance that offers you an at-home option for the Series 66 has been stale since 2022 — and unlike a wrong fee, this one costs you the sitting rather than the difference.

Arrive with a 30-minute buffer before your appointment time. Check-in is identity verification, a signature, usually a photograph and often a palm scan, and candidates routinely underestimate it. Bring unexpired government-issued photo ID carrying a signature, with the name matching your enrollment record exactly.

150 minutes for 100 items is 90 seconds per question — the most comfortable pacing of the three NASAA exams, and the reason time pressure is rarely what fails people here. What fails them is the breadth: the Series 66 is carrying the ground both the 63 and the 65 cover, in fewer questions than the 65 alone.

If you fail

The Series 66 is a NASAA exam, so NASAA's waiting periods govern the retake — not FINRA's, even though FINRA administered the sitting.

Attempts older than two years drop out of that count, and there is no limit on the number of retakes so long as the waiting period is observed. Each attempt costs the $177 fee again.

One useful detail: the waits are specific to the exam you failed. NASAA confirms that failing the Series 66 does not delay a Series 63 or Series 65 sitting. A candidate who fails the 66 twice and is facing a third attempt has a real option — sit the 63 and the 65 separately instead, since the combined exam's waiting period does not touch them.

Worth knowing but not worth planning around: FINRA amended its own Rule 1210 in June 2026 to cut its waits to 15 and 60 days, and its rulebook now reads that way. FINRA announced on 1 July 2026 that the reduction is "not yet in effect" for candidates, and we found no later implementation notice as of 29 August 2026. Either way it governs FINRA exams, not this one.

A realistic sequence

1. Confirm the Series 66 is actually your exam. No SIE and Series 7 in hand or in prospect means the Series 65 is the better route.
2. Check with your state regulator first if you already hold the Series 63 and Series 7 — some states let registered brokerage representatives act as investment adviser representatives without further qualification, which would make the whole question moot.
3. Study for breadth rather than speed. 90 seconds per item is generous; the coverage is not.
4. Sit full-length 100-item, 150-minute timed runs and score against 73 of 100.
5. Pass, then confirm what CRD actually recorded — a Series 63 credit, a Series 65 credit, or both, depending on the registration you file for.
6. On a fail, count NASAA's 30 days, and if a third attempt is in view, price the alternative of sitting the 63 and 65 separately instead.

NASAA and FINRA do not publish an official pass rate for the Series 66 in the sources cited here, so any percentage you see quoted online should be treated as an estimate rather than a published statistic. We will not invent one.

What can be said from the published facts is that the difficulty is concentrated in the scoring standard, not the volume. One hundred questions in 150 minutes is a manageable pace; needing 73 of them correct is not. The other honest difficulty driver is conceptual: the Series 66 is a law exam written by state regulators, and it rewards precise definitional reading — who is an agent, who is exempt, what is a "security," when an exclusion applies — over the market mechanics and product math that the Series 7 drills into you. Strong Series 7 performers routinely underestimate it for exactly this reason.

A study plan built around the 73-question bar

1. Study definitions as definitions

Because NASAA writes the content, the exam leans on the Uniform Securities Act's defined terms and their exclusions and exemptions. Build a running list of every defined term and, for each, the specific carve-outs. Most missed questions in this area are not conceptual failures — they are failures to notice that a fact pattern was engineered to hit an exclusion.

2. Take advantage of the Series 7 corequisite sequencing

Since FINRA requires the Series 7 to use the Series 66 for investment adviser representative registration, most candidates arrive with recent Series 7 knowledge. Sit the Series 66 while that product knowledge is still fresh; the ethics and suitability material overlaps enough that a short gap between exams saves real study hours.

3. Practice at 90 seconds per question

With 150 minutes for 100 questions, timed practice should mirror that pace exactly. Do not practice untimed and assume speed will arrive on exam day — the long fact patterns are where candidates lose the clock, and knowing you can bank time on definitional questions is what buys you the extra minute on a three-party adviser scenario.

4. Score your mocks against 73, not 70

Set your personal readiness threshold above the official standard of 73 of 100, because practice-exam scores tend to overstate real performance on unfamiliar question wording. Consistently clearing the mid-to-high 70s across multiple full-length mocks is a far better signal than one strong result.

5. Do not skip the continuing education reality

Passing is the start of an ongoing obligation. FINRA requires registered persons to complete the Regulatory Element annually by December 31 for each registration that they hold. Separately, the Firm Element requires broker-dealers to establish annual training programs, including a Needs Analysis and a Written Training Plan tailored to the firm's business. Knowing how the CE regime works is both exam-relevant and job-relevant.

Career value

The economic case for the Series 66 is straightforward. For $177 and one 150-minute sitting, you obtain what NASAA describes as qualification equivalent to having passed both the Series 63 and the Series 65 — one registration event covering both the broker-dealer agent state-law requirement and the investment adviser representative requirement. Paired with the Series 7, it is the standard credential set for a dual-registered representative who both executes transactions and advises for a fee, which is the operating model of most large wirehouse and hybrid RIA practices.

Put differently: the Series 66 does not by itself open a door, but it removes the wall between two business models. That is why it is usually taken immediately after the Series 7 rather than years later.

Quick reference

• Full title: Uniform Combined State Law Examination
• Questions: 100 scored questions
• Time: 150 minutes, plus 30 minutes of appointment time for the tutorial and post-exam survey
• Passing standard: at least 73 of the 100 scored questions
• Fee: $177
• Content developer: NASAA · Administered by: FINRA
• Corequisite: Series 7 required to register as an investment adviser representative using the Series 66

The Series 66 (Uniform Combined State Law Exam) and the Series 65 (Uniform Investment Adviser Law Exam) are both NASAA exams administered through FINRA that establish state-law competency for financial professionals. They overlap heavily in subject matter, but they serve different candidates. This page breaks down how the two compare on scope, difficulty, who each is designed for, and what you need before you sit.

The short version: the Series 66 is a combined exam that qualifies you as both a securities agent and an investment adviser representative — but only when paired with the Series 7. The Series 65 is a standalone investment adviser exam that carries no securities-license prerequisite.

Scope

Both exams test NASAA's Uniform Securities Act material: state registration of agents, broker-dealers, investment advisers and IARs; fiduciary duty; prohibited practices; and ethical conduct. The Series 66 combines the agent (state securities) content with the investment adviser representative content into a single exam, whereas the Series 65 focuses on the investment adviser representative qualification on its own.

Because the Series 66 assumes you have already covered federal securities products and analysis on the Series 7, it spends less time on standalone product knowledge. The Series 65 must cover more of that ground itself, since it is taken without a co-requisite securities exam.

Difficulty

The Series 66 consists of 100 scored questions with a passing standard of 73 correct, giving you 150 minutes to finish. Many candidates find the Series 66 feels more manageable per-question than the Series 65 precisely because it leans on Series 7 knowledge rather than re-teaching investment products — but that only helps if your Series 7 preparation is fresh. The Series 65, being self-contained, asks candidates to master both the law and the underlying economics, analysis, and product content on their own.

Who each is for

• Series 66: Candidates who are pursuing (or already hold) the Series 7 and want a single exam that qualifies them as both a state securities agent and an investment adviser representative.
• Series 65: Candidates who need only the investment adviser representative qualification — commonly fee-only advisers and planners — and who are not taking the Series 7.

Prerequisites

The defining structural difference: the Series 66 must be paired with the Series 7 to grant its full qualifications, so it is a co-requisite exam. The Series 65 has no securities-exam prerequisite and can be taken on its own. If you do not intend to sell securities and only need the adviser credential, the Series 65 is the standalone path; if you are already going through the Series 7, the Series 66 lets you add the state and adviser qualifications in one additional sitting.

Cost

The Series 66 exam fee is $177. Always confirm current fees on the official FINRA and NASAA pages before scheduling, since exam fees are set by the administrator and can change.

Studying for the Uniform Combined State Law Exam (Series 66) doesn't have to cost hundreds of dollars beyond the exam fee itself. The Series 66 is a 150-minute exam with 100 scored questions, and you need 73 correct to pass — a 73% threshold that leaves little room for guessing. That combination of a tight passing bar and dense legal/ethics material is exactly why prep options range from completely free resources to paid courses costing far more than the exam's own registration fee. This page compares the free study path against paid courses and books so you can decide honestly which fits your budget, your timeline, and how much structure you actually need.

Free Study Resources vs. Paid Prep

Because the passing bar is 73 of 100 scored questions, the single most predictive prep activity is answering large volumes of realistic questions and closing your knowledge gaps. Both free and paid tracks can deliver that; they differ in polish, breadth, and how much of the workflow they organize for you.

When Free Makes Sense

• You already work in securities/advisory and have strong familiarity with state (blue-sky) law, ethics, and investment vehicles.
• You're disciplined about building and following your own study schedule.
• You can assemble enough free practice questions to simulate the 100-question, 150-minute format under timed conditions.
• Your budget is tight and you'd rather reserve spend for a retake fee only if needed.

When Paid Makes Sense

• You're newer to the material and want a guided path rather than assembling one yourself.
• You want a large, rationale-backed question bank and calibrated practice exams to know when you're near the 73-of-100 threshold.
• Your time is more valuable than the course fee — a single failed attempt costs you the $177 fee again plus weeks of delay.
• You benefit from accountability, deadlines, or a pass guarantee.

A Sensible Hybrid

Many candidates combine the two: start with the free official content outline and regulator materials to learn the structure and terminology, then invest in a paid question bank only for the final drilling and timed full-length exams. This keeps spend low while still giving you the calibrated practice that best predicts a passing score.