Series 66 vs Series 65: Which One Do You Need?

Take the Series 65 if you only want to be an investment adviser representative and you don't have (or don't want) a broker-dealer job. Take the Series 66 if you're already going through the SIE and Series 7 anyway, because the 66 rides on top of those and gets you registered as both a broker-dealer agent and an IAR in one shorter exam.

That's the whole decision in two sentences. But the details matter, because the 66 is only "shorter" in a way that hides about 500 questions of prerequisite work. Here's what actually separates them.

The specs, side by side

Both exams are written by NASAA and administered by FINRA at Prometric centers. Both are closed-book multiple choice, and both give you your result the moment you finish.

Note the passing scores. The Series 65 is not a 70% exam even though it looks like one — 92 out of 130 is 70.8%, and NASAA gets enough complaints about this that it has a dedicated FAQ entry for people who scored exactly 70 and failed. The Series 66 sits a hair higher at 73%.

Why the Series 66 is shorter (and why that's misleading)

The Series 66 has 30 fewer questions for one reason: NASAA assumes you've already been tested on the products, markets, and math elsewhere. The SIE and Series 7 cover that ground, so the 66 doesn't re-cover it.

You can see this in the topic weights. On the Series 65, only 30% of the exam is law, regulation, and ethics — the other 70% is economics, financial reporting, investment vehicles, tax, retirement plans, and portfolio strategy. On the Series 66, law and ethics jump to 45%, and the pure economics-and-analysis section shrinks from 15% of the exam to 8%.

So the Series 66 is a narrower, more law-heavy test. It is not an easier path. To use it you need a valid SIE ($100) and Series 7 ($395, 125 questions, 3 hours 45 minutes, 72% to pass), which means roughly $672 in exam fees across three exams versus $187 for the Series 65 alone.

The order doesn't matter. NASAA is explicit that you can take the 66 and the 7 in either sequence — you just need both passed when you seek state registration.

The sponsorship question is usually the real deciding factor

You cannot enroll in the Series 7 without being associated with and sponsored by a FINRA member firm. That single rule sorts most candidates:

• You've been hired by a broker-dealer or a wirehouse. Your firm is putting you through the SIE and Series 7 anyway. Take the Series 66. It's the cheaper marginal exam and it covers both registrations.
• You're going independent, joining an RIA, or launching your own advisory firm. Take the Series 65. No sponsor needed, no U4 required to enroll — you can open your own exam window through FINRA's site and pay the fee yourself.
• You're a career-changer with no job offer yet. Take the Series 65. It's the one credential in this pair you can earn entirely on your own timeline, and holding it makes you a more attractive hire.

One important asymmetry: passing the Series 66 gives you Series 63 and Series 65 exam credit in CRD — but only while your SIE and Series 7 stay valid. The Series 66 doesn't hold up as a standalone credential the way the 65 does. If you leave the brokerage world, those component credits expire on their own registration histories.

The waiver that catches people off guard

Most states let you skip the Series 65 entirely if you hold one of five professional designations. NASAA's membership approved the current list in May 2024:

• CFA (Chartered Financial Analyst)
• CFP (Certified Financial Planner)
• ChFC or MSFS (The American College)
• PFS (Personal Financial Specialist, AICPA)
• CIMA (Certified Investment Management Analyst)

Two things to know. First, the waiver applies to the Series 65 only — it will not waive the Series 66, because the 66 is treated as the 63 and 65 combined and is bound to your Series 7. Second, a CPA license alone doesn't qualify. NASAA reviewed it and concluded the AICPA's PFS designation met the bar but the CPA credential by itself did not.

If you're partway through the CFA program and heading toward an RIA role, this is worth doing the math on. Finishing the charter waives the Series 65 in most states, though you should confirm with your specific state securities administrator, since adoption of the model rule isn't universal.

Practical rules most study guides skip

Two-year clock. Passing an exam isn't a license. Most states give you two years from your pass date to actually get registered before the exam expires in CRD. The same two-year window applies if you leave the industry.

Retake waiting periods. Fail once, wait 30 days. Fail twice, another 30 days. Fail a third time, you wait 180 days before your fourth attempt. There's no lifetime cap, but that six-month penalty is a real reason to over-prepare rather than treat attempt one as a diagnostic.

Your 120-day window is not extendable for studying. Once you enroll, FINRA opens a 120-day scheduling window. NASAA only grants extensions for illness or injury. If you need more time, you re-enroll and pay the fee again.

Section scores don't average. People fail the 65 and 66 while their section percentages look fine. The sections are weighted differently, so you cannot reconstruct your overall score by averaging them.

No CE on the exams themselves — but if you register as an IAR in a state that has adopted IAR continuing education, that requirement attaches to your registration, not your exam.

Where to study

If you're on the Series 66 path, Certus has a full Series 66 track built the same way as the rest of the platform: short chapters, spaced-repetition flashcards built from the material, and a timed mock exam at the end. It runs $9.58/month billed yearly, which is less than one retake fee.

If you're weighing the CFA route instead — either for the career or for the Series 65 waiver — you can take a full-length CFA mock exam free, no signup, and see where you actually stand before spending a dollar. That's usually the fastest way to find out whether the charter is a realistic path for you.

Take the free CFA mock exam →

Related reading: SIE vs Series 7: What's the Difference? · Series 7 Pass Rate and Difficulty · The cheapest CFA prep that actually works · Certus — the Duolingo-style way to pass the CFA