Series 65 vs. Series 66: What’s the Difference?

 Series 65 vs. Series 66: The Series 65 is typically for candidates pursuing investment adviser representative qualification without a Series 7 requirement. The Series 66 is designed for candidates who also need broker-dealer agent registration and are pairing it with the SIE and Series 7. The right exam depends on your role, registration path, and firm requirements. 

If you’re working toward an investment advisory role, you may find yourself asking: Do I need the Series 65 or Series 66?

Both exams are connected to investment adviser representative (IAR) qualification and cover similar material. But they aren’t interchangeable for every candidate or every registration path.

If you’re comparing Series 65 vs. Series 66, the key question is whether your path is advisory-only or combines advisory and securities registration.

The biggest distinction between Series 65 vs. Series 66 is whether your registration path includes the Series 7. The Series 65 can serve as a standalone exam for candidates pursuing an advisory path, while the Series 66 is designed to work with the Series 7 for candidates whose roles combine securities and advisory responsibilities.

Here’s a closer look at Series 65 vs. Series 66, what each exam covers, and what to consider before choosing your path.

3 Key Takeaways

• Both the Series 65 and Series 66 relate to investment adviser representative qualification. The Series 65 is typically advisory-focused, while the Series 66 is used with the SIE and Series 7 for combined registration paths.
• The Series 66 is closely connected to the Series 7. Candidates using the Series 66 for registration need a valid SIE and Series 7.
• The right exam depends on your firm, role, and registration requirements. Your firm, intended responsibilities, and state requirements can all affect which exam you need.

What Is the Series 65 Exam?

The Series 65, formally known as the Uniform Investment Adviser Law Examination, is commonly associated with candidates pursuing registration as investment adviser representatives.

The exam covers topics related to investment advice and the responsibilities that come with providing it. Candidates can expect material related to:

• economic concepts
• investment vehicles
• client recommendations and strategies
• laws, regulations, and ethical practices

Unlike the Series 66, the Series 65 does not depend on passing the Series 7. That can make it relevant for candidates pursuing an advisory-focused role without following a broker-dealer representative path.

The Series 65 currently includes 130 scored questions plus 10 unscored pretest questions. Candidates have 180 minutes to complete the exam and must answer at least 92 of the 130 scored questions correctly to pass.

That doesn’t mean everyone working in an advisory role automatically needs the Series 65. Registration requirements can vary, so candidates should confirm what applies to their role and jurisdiction before registering.

Once you know the Series 65 is part of your path, an ExamFX Series 65 exam prep course can help you work through the concepts covered on the exam with a structured study plan. 

What Is the Series 66 Exam?

The Series 66 is formally called the Uniform Combined State Law Examination. It was developed for candidates seeking to qualify as both broker-dealer agents and investment adviser representatives under state law.

The word combined is important here. When combined with a valid SIE and Series 7, passing the Series 66 qualifies an individual as if they had passed both the Series 63 and Series 65.

That makes the Series 66 particularly relevant for candidates whose roles include both securities registered representative and investment advisory responsibilities.

The Series 7 relationship is also a major distinction between the Series 66 vs. 65. NASAA explains that candidates using the Series 66 for registration must have a valid SIE and Series 7. Candidates do not necessarily have to take the exams in a specific order, but the required exams must be valid when applying for registration.

If the Series 66 matches your required path, ExamFX Series 66 exam prep can help you prepare for the combination of regulatory, investment, and advisory concepts covered on the exam.

Series 65 vs. Series 66: Key Differences

Here's a side-by-side comparison of Series 65 vs. Series 66.

NASAA notes that the Series 66 is shorter than the Series 65 because concepts already covered by the SIE and Series 7 generally aren’t repeated on the Series 66.

Exam fees and requirements can change, so candidates should verify current details with NASAA and FINRA before registering.

Do You Need Series 65 or Series 66?

There isn’t one answer that applies to every candidate. Whether you need the Series 65 or Series 66 depends on what you’ll be doing, how you’ll be registered, your firm’s requirements, and the state or states where you’ll conduct business.

A few common scenarios can make the distinction easier to understand.

You’re pursuing an advisory role without a Series 7 path.
The Series 65 may be the relevant exam because it can be used for investment adviser representative qualification without the Series 7 corequisite required for the Series 66.

You’re taking or already hold the Series 7.
If your role requires both broker-dealer agent and investment adviser representative registration, the Series 66 may be part of your exam path.

Your firm has given you a specific exam sequence.
Follow your firm’s direction. Your employer may have requirements based on your position, responsibilities, and jurisdictions.

You're not sure whether you need adviser, agent, or combined registration.   
Confirm before registering for an exam. Your state securities regulator and firm can help clarify the requirements that apply to your intended role.

You’re still exploring possible career paths.
Understanding the distinction can still be useful. The Series 65 is generally associated with an advisory-focused path, while the Series 66 is designed for a combined securities agent and advisory path alongside the Series 7.

Do You Need Series 7 for Series 66?

Yes. For registration based on the Series 66, candidates need a valid SIE and Series 7.

NASAA states that an individual must have a valid SIE and Series 7 at the time of registration when using the Series 66. The exams do not necessarily have to be taken in a particular order.

This is one of the most important practical differences when comparing Series 65 vs. Series 66.

The Series 65 does not have the same Series 7 corequisite. The Series 66, on the other hand, was designed as part of a combined path. NASAA explains that the exam is shorter than the Series 65 in part because material covered by the SIE and Series 7 generally isn’t tested again.

Always confirm current registration requirements with your firm, state securities regulator, or official NASAA and FINRA guidance before choosing an exam.

Candidates following the Series 66 path often also need to prepare for the SIE and Series 7, and ExamFX offers a bundled SIE + Series 7 exam prep option. 

Is Series 66 Harder Than Series 65?

Not universally. The better choice depends on your background and the registration path you need. Neither exam is universally harder. Your experience can depend on your background, strengths, and familiarity with the material.

The Series 65 is the longer exam, with 130 scored questions compared with 100 scored questions on the Series 66. The Series 65 also needs to stand on its own, while the Series 66 is structured with the expectation that candidates on that registration path also have the knowledge tested through the SIE and Series 7.

That can create different challenges.

Candidates new to investment advisory concepts may find the breadth of the Series 65 demanding. Others may find the Series 66 challenging because it requires precision across state and federal regulations, ethical practices, and advisory concepts.

Rather than choosing an exam based on which one sounds easier, first determine which exam your registration path requires. Then use the appropriate content outline and study plan to prepare for that exam.

Can You Take Both Series 65 and Series 66?

It’s possible for someone to have passed both exams, but most candidates shouldn’t choose exams simply because they want to collect additional qualifications.

In many situations, doing so may be unnecessary. NASAA explains that, when combined with a valid SIE and Series 7, the Series 66 provides the examination qualification equivalent of passing both the Series 63 and Series 65.

Before investing time and money in another exam, confirm exactly what your registration path requires. If you already hold certain qualifications or your role changes, your firm or state regulator can help determine whether another exam is necessary.

How To Choose the Right Exam Path

Start with the role you’re pursuing rather than the exam itself.

If your role is primarily advisory-focused, confirm whether the Series 65 is required for your registration. If your role also requires the Series 7 and includes both securities and advisory responsibilities, ask whether the Series 66 is the expected path.

If your firm has already given you an exam sequence, use that guidance rather than choosing based on which exam appears shorter or easier.

Once you know which exam you need, ExamFX can help you prepare with a study plan built specifically around that exam.

Series 65 vs. Series 66 FAQs

What is the difference between Series 65 and Series 66?

The Series 65 is commonly used for investment adviser representative qualification and does not require the Series 7 as a corequisite. The Series 66 is a combined state law exam designed for candidates seeking both securities agent and investment adviser representative qualification and is used with a valid SIE and Series 7.

Do I need Series 65 if I have Series 66?

Generally, not for the same examination qualification. When combined with a valid SIE and Series 7, passing the Series 66 qualifies an individual as if they had passed both the Series 63 and Series 65. Specific registration requirements can vary, so confirm what applies to your role and jurisdiction.

Is Series 65 harder than Series 66?

Not necessarily. The Series 65 is longer and covers material as a standalone exam, while the Series 66 is shorter because it generally does not repeat material covered by the SIE and Series 7. Which feels harder depends on your experience, strengths, and preparation.

Do you need Series 7 for Series 66?

Yes, for registration purposes. NASAA states that candidates taking the Series 66 must have a valid SIE and Series 7 at the time of registration.

Which exam should investment advisers take?

It depends on the individual's role and registration path. Candidates pursuing an advisory-focused role may encounter the Series 65, while candidates who also need securities agent registration and have a Series 7 path may use the Series 66. State and firm requirements should be confirmed before registering.

Should I take Series 65 or Series 66 first?

The better question is which exam your registration path requires. If your path calls for the Series 65, there may be no reason to take the Series 66. If your path includes the Series 7 and Series 66, NASAA does not require those exams to be taken in a specific order, although the applicable exams must be valid when you apply for registration.

Who should take the Series 65 vs. Series 66? 

Choose the Right Prep Path for Your Next Exam

The difference between the Series 65 and Series 66 isn’t simply that one exam is longer or covers more material. They support different registration paths.

The Series 65 is commonly associated with candidates pursuing investment adviser representative qualification as a standalone exam path. The Series 66 is designed for candidates whose path combines securities agent and investment adviser representative responsibilities alongside the Series 7.

Before you start studying, confirm which exam your role, firm, and state require. Then you can put your time toward preparing for the exam that actually moves your licensing path forward.

ExamFX offers a structured  Series 65 exam prep course and Series 66 exam prep to help you focus on the concepts you need to know and prepare for exam day with confidence. Still comparing paths? Check out our securities licensing hub to learn more.

Related Resources

• Series 65 Exam Prep
• Series 66 Exam Prep
• Series 63 Exam Prep
• Securities Licensing Exam Prep Courses
• SIE + Series 7 Exam Prep Bundle