SOA vs. CAS Preliminary Exams: Complete Comparison
A detailed comparison of the preliminary exam requirements for the SOA and CAS actuarial pathways.
Shared Preliminary Exams
The Society of Actuaries (SOA) and Casualty Actuarial Society (CAS) share two preliminary exams: Exam P (Probability) and Exam FM (Financial Mathematics). Both organizations accept each other's results for these exams, so candidates do not need to choose between the SOA and CAS tracks before taking them. This shared foundation means that every aspiring actuary, regardless of their intended career path, starts with the same two exams covering probability theory and financial mathematics.
Exam P covers univariate and multivariate probability distributions, conditional probability, moment generating functions, and common statistical distributions. Exam FM covers the time value of money, annuities, bonds, loans, and basic financial derivatives. These topics provide the mathematical foundation that all actuaries need regardless of specialization. The shared exams typically take candidates six months to a year to complete, and they serve as the entry point to the profession for both life insurance and property-casualty career tracks.
SOA Preliminary Exam Path
Beyond the shared exams, SOA candidates proceed through a sequence that emphasizes actuarial mathematics, predictive analytics, and long-term financial modeling. Exam FAM (Fundamentals of Actuarial Mathematics) covers both short-term and long-term actuarial mathematics at a foundational level, including loss models, life contingencies, and basic pricing and reserving concepts. Exam SRM (Statistics for Risk Modeling) tests applied statistics and predictive modeling, including regression analysis, time series, decision trees, and principal component analysis.
After these foundational exams, SOA candidates choose between Exam ASTAM (Advanced Short-Term Actuarial Mathematics) and Exam ALTAM (Advanced Long-Term Actuarial Mathematics) depending on their intended specialization. ASTAM covers advanced loss models, credibility theory, and pricing methods relevant to property-casualty and health insurance. ALTAM covers advanced life contingencies, pension mathematics, and multi-state models relevant to life insurance and retirement benefits. The SOA also requires completion of the FAP (Fundamentals of Actuarial Practice) modules and the APC (Associateship Professionalism Course) to achieve the ASA designation.
CAS Preliminary Exam Path
CAS candidates follow a path that emphasizes statistics, data analysis, and property-casualty specific methods. After completing Exams P and FM, CAS candidates take Exam MAS-I (Modern Actuarial Statistics I) and Exam MAS-II (Modern Actuarial Statistics II). These exams were introduced to replace the older Exam S and portions of Exam 3F, reflecting the CAS's strategic decision to increase the statistical and analytical rigor of its credential.
Exam MAS-I covers probability models, mathematical statistics, regression analysis, time series, and Bayesian methods. Exam MAS-II builds on this foundation with advanced statistical methods applied directly to property-casualty insurance, including credibility theory, generalized linear models for insurance pricing, and machine learning techniques. The CAS path continues with Exam 5 (Basic Techniques for Ratemaking and Estimating Claim Liabilities) and Exam 6 (Regulation and Financial Reporting), which cover the core technical and regulatory knowledge required for the ACAS (Associate of the Casualty Actuarial Society) designation.
Content Emphasis Comparison
The most significant difference between the two paths is the content emphasis at the intermediate and advanced levels. The SOA path provides broader exposure to both life and casualty actuarial mathematics, reflecting the SOA's scope across life insurance, health insurance, retirement benefits, and general insurance. The life contingencies content (survival models, life annuity and insurance valuation, pension mathematics) is unique to the SOA path and is essential for actuaries working in life insurance or pension practice areas.
The CAS path provides deeper exposure to modern statistical methods and their application to property-casualty insurance problems. The MAS exams cover regression, time series, Bayesian statistics, generalized linear models, and machine learning at a level of depth and rigor that exceeds the SOA's Exam SRM. This reflects the CAS's view that modern property-casualty actuaries need strong statistical foundations to work effectively with the large datasets and sophisticated modeling techniques used in pricing, reserving, and underwriting. CAS candidates develop stronger statistical skills earlier in their exam progression compared to SOA candidates.
Difficulty and Time Commitment
Comparing the overall difficulty of the two paths is inherently subjective, but several observations are possible. The total number of exams required to reach the associate level is similar for both organizations, with roughly seven to eight exam-level requirements plus educational requirements such as VEE credits and online courses. The time to complete the associate credential is also similar, typically four to six years from the first exam.
Individual exam difficulty varies. The CAS MAS exams are generally considered more challenging than the SOA's Exam SRM because they cover more material at greater depth. However, the SOA's Exam ALTAM (and its predecessor LTAM) is widely regarded as one of the most difficult preliminary exams in either organization, with its combination of vast content, written-answer questions, and conceptual complexity producing some of the lowest pass rates. Candidates should not choose between the SOA and CAS based on perceived exam difficulty, as both paths are demanding and both produce highly qualified professionals.
Making the Choice
The decision between the SOA and CAS should be driven primarily by career interests rather than exam difficulty or perceived prestige. If you are drawn to life insurance, health insurance, retirement benefits, or investment management, the SOA is the natural choice. If you are interested in property-casualty insurance, including auto, homeowners, commercial liability, and workers compensation, the CAS is the appropriate path. Some employers, particularly large consulting firms and multiline insurance companies, value both credentials and may not express a strong preference.
For candidates who are uncertain about their career direction, completing Exams P and FM first is the best strategy because both exams apply to either path. This buys time to explore different areas of practice through internships, informational interviews, and coursework before committing to one organization. Some candidates change paths after completing one or more non-shared exams, but this involves losing credit for exams that do not transfer between organizations, so it is best to make an informed decision as early as possible.
Study Tips
For candidates preparing for the shared preliminary exams, focus on building strong mathematical foundations rather than memorizing formulas. Both Exam P and Exam FM test the ability to apply concepts to novel problems under time pressure. Practice with timed exams is essential for developing the speed and accuracy needed to pass. For candidates who have committed to either the SOA or CAS path, review the syllabus and learning objectives for your next exam carefully and choose study materials that align with the specific content and format of that exam. The study materials and exam formats differ significantly between the SOA and CAS beyond the shared preliminary level.