The Series 66 exam is a big deal for most students. Much like the Series 7 or Series 65 exam, this FINRA exam can be quite difficult— but failure isn’t an option. That’s why it’s so important to get an effective study course as soon as possible in order to pass your licensing exam.
Luckily for you, I’ve gone ahead and found the 6 best Series 66 study guides on the market.
Each of these courses have something unique to offer its students. Read on to see which one fits your study needs the best.
6 Best Series 66 Exam Prep Courses in 2025:
1. Best Series 66 Exam Prep Overall: Securities Institute of America
2. Runner-up Best Series 66 Study Guide: Securities Training Corporation
3. Top Series 66 Course Materials: Kaplan Series 66 Online Courses
4. Best Series 66 Exam Support: ExamFX Series 66 Study Guide
5. Best Series 66 Practice Exams: Knopman Series 66 Exam Prep
| AIS RANKING | #1 | #2 | #3 | #4 | #5 |
|---|---|---|---|---|---|
| COMPANY |  |  |  |  |  |
| PRICE | $124 | $222 | $269 | $225 | $395 |
| DISCOUNT | Save 12% | Save 15% | Save 10% | Save 20% | No Discount |
| PRACTICE EXAMS | Yes | Yes | Yes | Yes | Yes |
| LIVE CONENT | Yes | Yes | Yes | Yes | Yes |
| BONUS MATERIALS | Textbooks, Ebooks, Video Library | Study Manual, Flashcards | Study Sheets, Class Notes, Video Library | Flascards, Video Library | Textbooks, Flashcards, Review Charts, etc. |
| PASS GUARANTEE | Yes | No | Yes | Yes | No |
| SUPPORT | Phone, Email | Phone, Email | Phone, Email | Phone, Email, Chat | Phone, Email |
| GET STARTED | Get Started | Get Started | Get Started | Get Started | Get Started |
#1. Securities Institute of America Series 66 Course
The greatest benefit of Securities Institute of America is easily their online video class. This class walks you through every concept you need to know for the Series 66 exam. Plus each video comes with key concepts, tables, and formulas displayed and highlighted throughout. This ensures that you never miss essential information as you study to become a securities agent.
This Series 66 exam prep provider also offers a comprehensive self study course. This contains everything you need to pass the licensing exam: textbooks, practice questions, practice tests, video libraries, and much more. This online course will ensure that test takers like you are ready for whatever the exam throws your way.
SIA’s Series 66 are also some of the most affordable on the market. However, some of the individual materials can be pretty expensive when purchased on their own. However, you can avoid these fees by enrolling in one of their full courses instead.
Thanks to their affordable prices and the high quality of their contents, SIA is an approachable and effective resource for any student who needs to pass their exam. You will not regret any of the time or money spent here!
Securities Institute Series 66 Pros and Cons
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#2. Securities Training Corporation Series 66 Exam Prep
One of this course’s major focuses are webinars, both live and on demand. These take the format of online lectures and cover major topics on the upcoming exam. Plus, the webinars are designed to emulate a real life classroom— so you’ll always be learning in a format you’re used to.
Securities Training Corporation periodically issues progress exams. These will let you know how close you are to being ready to take the actual exam. If you pass their Green Light exam at the end of your study schedule, then you’ll know that you are ready and able to pass the real thing!
Although some courses may charge you for new materials, all STCUSA updates come free of charge. That means you’ll always be working with the most up to date material on offer. Unfortunately, what you will need to pay more for is STCUSA’s live courses, since they are gated behind their highest payment tier. But if you’re happy with self study materials, then these courses are still a good choice.
STCUSA is ultimately a great option for traditional learning styles. Each of their courses emulates the classroom experience well, and they do an excellent job of mapping your progress. It’s an excellent study tool to help you earn a passing score!
STC Series 66 Pros and Cons
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#3 Kaplan Series 66 Exam Prep Course Review
Kaplan’s SIE prep courses start out by having you customize a study calendar. This allows you total control over the pace of your learning as well as when and where you study. Because of that, you’ll never have to worry about adjusting your schedule to match this course. Instead, you can set your own pace and work whenever you can.
Quizzes are a major focus of this Series 66 study guide. You’ll be able to create custom quizzes out of Kaplan’s robust question bank when you sign up for this course. Once you’ve gotten comfortable with your progres, they also offer prebuilt mastery and practice exams.
Every lesson with Kaplan also comes with a set of premade class notes. These notes highlight important exam topics and include every key point addressed in that lesson. Thanks to that, it’s easy for you to create an organized review session whenever you want.
Unfortunately, you’re not guaranteed a passing grade when you sign up for just any Kaplan FINRA course. That’s because their pass guarantees are only available for live courses— not their self study options. This can be a big source of stress if you’re worried about wasting your money, but it’s still ultimately an excellent choice for your Series 66 prep.
Kaplan Series 66 Pros and Cons
#4. ExamFX Series 66 Exam Prep Review Course
ExamFX’s courses are designed to be completed in around 3 months. That’s because they understand that students like you can’t afford to waste time. Because of how effective the course materials are, this brisk pace actually ends up more beneficial since you’ll be ready for the licensing exam with time to spare.
This course’s biggest focus is on video content. Most learning is done via a series of video lectures that convey business information in a simple and effective manner. Because of that, each lecture is easily digestible. Plus, each video can be re-watched as many times as you want.
Any enrolled student can contact an ExamFX instructor for help at any time. These instructors will be able to explain any difficult concepts and help you move forward with your studying. Thanks to that, you never need to worry about being lost when learning about the exam. Help is always just one click away.
ExamFX does have some live content, but not much. Their calendar shows that they only have 4 training sessions a month— which is pretty limited when compared to some of the other options on this list. Still, their effective videos and qualified teachers do a great job preparing you for your upcoming exam in a timely manner.
ExamFX Series 66 Pros and Cons
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#5 Knopman Marks Series 66 Practice Exams
Every Knopman course comes with a well designed action plan. It’s a step by step guide to passing, and it includes a list of the best practices to get a great exam grade. It also lays out the best way to use the materials available to you. All in all, it effectively organizes your work and motivates you to approach everything one step at a time.
Courses combine live instruction with video lectures in order to explicitly tell you how to pass sections of the exam. Each study session lasts around 20 to 25 minutes; this is because people learn better through bite sized chunks of content instead of being overwhelmed with information.
In addition to tests and lectures, students also gain access to textbooks, worksheets, flashcards, and more. Just like the lectures, these are tracked closely to ensure that you’re on the right path to success.
Currently, there’s only one Knopman course with the option of paying for extra live content. It would be nice to see cheaper versions of this Series 66 course or a premium option with even more features. Still, the price isn’t bad enough to warrant staying away— just keep in mind that what you see is what you get.
Knopman Marks Series 66 Pros and Cons
Series 66 Exam Frequently Asked Questions
Passing score for the Series 66 exam requires you to get a score of 73 percent or higher. Although the pass rates for this exam aren’t published anywhere, the vast majority of test takers say that it’s difficult but not impossible. Additionally, you can improve your chances of passing by enrolling in a well-designed Series 66 exam prep course.
The best way to study for the Series 66 exam is to enroll in a prep course from a company like Securities Institute of America, STCUSA, or Kaplan. However, you could also look for resources that teach you about the concepts covered on the exam, such as the characteristics of investment vehicles, economic factors, and investment laws/regulations.
Unfortunately, there is no public data regarding specific pass rates for the Series 66 exam. However, many companies like Kaplan that offer prep courses for the exam boast high pass rates for their students, so you can increase your chances of passing by enrolling in one of these courses.
Kaplan offers helpful course materials for students preparing to take the Series 66 exam, including detailed notes for each section and fully customizable quizzes. However, our recommendation for the best Series 66 exam prep course is Securities Institute of America because of their excellent study resources and GreenLight Guarantee.
