Is CAS or SOA harder?

They are hard in different ways. CAS upper-level exams are known for breadth across P&C topics including ratemaking, reserving, financial analysis, and catastrophe modeling. SOA exams, particularly in the life and quantitative finance practice areas, are known for mathematical depth including stochastic calculus and option pricing theory. The CAS MAS-I has posted a 45.3 percent cumulative average pass rate across 12,886 attempts since 2018 per Actuarial Lookup data. SOA upper-level pass rates are broadly comparable at 40 to 50 percent for most sittings.

Do CAS or SOA actuaries earn more?

At comparable experience and credential levels, salaries are very similar between FCAS and FSA. The Bureau of Labor Statistics reported a median actuary salary of $125,770 as of May 2024. DW Simpson surveys show FCAS and FSA actuaries with 5 to 10 years experience typically earn $150,000 to $200,000. Salary differences emerge from specific practice area demand rather than the track itself. Actuaries in either track who combine their credential with data science skills earn approximately 10 to 15 percent more than peers without those skills.

Can you switch from CAS to SOA or vice versa?

It is possible but costly. The preliminary exams P, FM, and FAM are shared and transfer in both directions. Once you reach upper-level exams, content diverges completely. Switching after passing multiple upper-level exams means starting those upper levels from scratch. However, actuarial skills transfer across industries even if credentials do not, and actuaries regularly move between practice areas.

SOA vs CAS in 2026: How to Choose the Right Actuarial Track

Q: What is the difference between SOA and CAS?

SOA (Society of Actuaries) covers life insurance, health insurance, retirement and pensions, and quantitative finance across six practice areas. CAS (Casualty Actuarial Society) covers property and casualty insurance including auto, homeowners, commercial liability, workers compensation, and catastrophe modeling. The problems differ in time horizon, volatility, and mathematical character. As of Fall 2025, the SOA also added a General Insurance practice area, creating some curriculum overlap with CAS territory.

The first three exams overlap. After that, the paths diverge completely. This comparison covers the Fall 2025 FSA pathway restructuring, CAS pass rate data from 12,886 exam attempts, BLS salary figures, and a practical framework for deciding.

SOA or CAS is one of the first major decisions every actuarial student faces. Most of the advice online has not kept up with 2025-2026 developments: the SOA's complete overhaul of its FSA pathway effective Fall 2025, a restructured CAS exam schedule with four MAS-I sittings per year starting in 2026, and a labor market where the Bureau of Labor Statistics projects 22 percent employment growth for actuaries between 2024 and 2034, more than seven times the average for all occupations.

From tracking both programs over multiple credentialing cycles, the single most important context update is the SOA's September 2025 FSA restructuring, which replaced specialized tracks with six flexible practice areas and cut grading turnaround from eleven weeks to four. The CAS, meanwhile, expanded MAS-I to four sittings per year starting in 2026, a direct response to candidate demand. Both changes matter to anyone currently navigating this decision.

Here is the data-supported comparison: what each organization covers, how the exams differ and what the pass rate data shows, what BLS and independent salary surveys report at each experience level, which practice areas are seeing the strongest demand in 2026, and a practical framework for making the decision before the tracks diverge.

What Changed in 2025-2026: Structural Updates to Both Tracks

Any SOA vs. CAS comparison written before late 2025 is now missing material information. Both societies made structural changes significant enough to affect how candidates should think about the decision.

The SOA's FSA Pathway Overhaul

Effective Fall 2025, the SOA eliminated its traditional Fellowship tracks (Life, Health, Quantitative Finance, Retirement Benefits, and Group Benefits) and replaced them with six practice areas: Corporate Finance and ERM (CFE), Group and Health Insurance (GH), General Insurance (GI), Individual Life and Annuities (ILA), Investment (INV), and Retirement (RET). The new fellowship requires four exams: two from the same declared practice area, plus two chosen freely from anywhere in the curriculum, along with the Design and Communications module and Fellowship Admissions Course.

Three additional changes are meaningful for candidates. Exam duration dropped from up to five hours to three hours, with 2.5 hours of scored content. Grading turnaround fell from eleven weeks to four weeks, meaning candidates can schedule retakes more efficiently. High-demand exams are now offered three times per year instead of twice. Candidates who do not pass receive granular score reports, and those close to the passing mark can purchase personalized feedback. International candidates gained the ability to focus on either U.S., Canadian, or global regulatory material.

Existing candidates received one-to-one credit transition for exams already passed, so the overhaul did not invalidate progress. But the new structure meaningfully changes the credentialing experience going forward.

CAS Schedule and Reporting Updates

The CAS also updated its exam infrastructure for 2026. MAS-I and MAS-II are now offered four times per year, up from three in 2025. Exams 8 and 9 are offered twice per year. Beginning with Fall 2025 results, the CAS stopped publishing its traditional list of passing candidates, shifting instead to a searchable public directory where any member can verify a colleague's passing window. This change has privacy implications but also means that the detailed per-sitting pass rate breakdowns the CAS historically published may be less granular going forward.

What Each Track Covers

CAS: Casualty Actuarial Society

Property and casualty insurance: personal and commercial auto, homeowners, commercial liability, workers' compensation, medical malpractice, surety, reinsurance, and catastrophe modeling.

The work is data-intensive and iterative, with shorter feedback loops than life insurance. A pricing decision today influences loss ratios you can observe within two to three years. A hurricane settles reserves within a claims cycle. The CAS curriculum reflects this: ratemaking, loss development, financial analysis, and cat model interpretation are all directly applicable from the first year of employment.

SOA: Society of Actuaries

Life insurance, health insurance, retirement and pensions, quantitative finance, and now General Insurance as a practice area added in the Fall 2025 restructuring.

Longer time horizons: modeling mortality over 30-year periods, pricing annuities with multi-decade guarantees, projecting pension liabilities into the distant future. Mathematical sophistication varies significantly by practice area. The investment and ILA tracks involve stochastic calculus and option pricing theory at a depth CAS exams do not reach. The GH and RET tracks are more applied but heavily influenced by regulatory frameworks specific to ERISA, HIPAA, and the ACA.

The addition of a General Insurance practice area under the new SOA structure is worth noting. FSA candidates who choose GI as one of their practice areas now build a fellowship that explicitly includes P&C content. This does not duplicate what the FCAS represents in the market, and employers distinguish between the credentials. But it does change the calculus for candidates who sit near the decision boundary, particularly those considering consulting careers where practice area flexibility has commercial value.

Exam Structure and Pass Rates: What the Data Shows

The Shared Foundation

Both tracks begin with the same three preliminary exams: Probability (P), Financial Mathematics (FM), and Fundamentals of Actuarial Mathematics (FAM). These exams are identical across both societies and represent several hundred hours of preparation that transfers regardless of which upper-level path you eventually choose. The shared foundation means you have genuine runway before committing. Most candidates sit the preliminary exams while exploring both industries through internships and informational interviews, which is the right approach.

Dimension	CAS	SOA
Upper-level character	Breadth across P&C: ratemaking, reserving, cat modeling, reinsurance	Mathematical depth varies by practice area; ILA/INV involve stochastic calculus
MAS-I cumulative pass rate	45.3% avg across 12,886 attempts (Actuarial Lookup)	40-50% for most fellowship sittings
Shared exams	P, FM, FAM: identical across both tracks
Exam duration (upper-level)	Varies by exam, written answer format for upper levels	3 hours (2.5 hours scored content) effective Fall 2025
Grading turnaround	Varies by exam	4 weeks (reduced from 11 weeks in Fall 2025)
Typical time to fellowship	7-8 years from first exam (CAS targets 5-7 from employment)	5-8 years
Study hours per upper exam	350-450 hours	350-450 hours

CAS Pass Rate Detail

Actuarial Lookup, which aggregates published CAS exam statistics, reports a cumulative average pass rate of 45.3 percent for MAS-I across all 15 sittings since May 2018, covering 12,886 total attempts and 5,843 candidates who passed. The highest single sitting was May 2024 at 55.3 percent; the lowest was October 2018 at 30.6 percent. The standard deviation across sittings is 7.8 percentage points, indicating meaningful variance from one sitting to the next.

Upper-level written exams (Exams 7, 8, and 9) have historically seen pass rates in the 40 to 50 percent range, though the individual sittings vary more than the multiple-choice exams. The CAS targets a 5 to 7 year path from first employment to FCAS; actual median time from first exam to FCAS completion has run closer to 8 years, reflecting the reality that most candidates carry a full-time job through the credentialing process.

SOA Fellowship Pass Rates

SOA fellowship exam pass rates are broadly comparable to CAS at 40 to 50 percent for most sittings, but the exams test different competencies. Several SOA fellowship exams use a written answer format that requires structured professional communication alongside technical accuracy. The shorter exam duration introduced in Fall 2025 (three hours, down from up to five) changes the candidate experience but not the underlying difficulty of the material. The faster grading timeline (four weeks from end of testing period) is the operationally significant change, as it compresses the time between a failed attempt and a retake opportunity.

Patterns we have seen across credentialing cycles suggest that candidates who struggle with the SOA's written answer format frequently underestimate the communication component relative to the calculation component. Preparation that focuses exclusively on the math without practicing structured responses is one of the more common causes of unexpected failures on SOA upper-level exams.

Salary and Compensation: What BLS and Industry Surveys Show

At comparable experience and fellowship credential levels, FCAS and FSA salaries are very similar. This is the honest answer, and the data supports it consistently across multiple survey sources.

$125,770

BLS median actuary salary, May 2024 (all actuaries, all credentials)

$150K-$200K

Typical total compensation, FSA or FCAS with 5-10 years experience (DW Simpson 2026)

22%

BLS projected employment growth for actuaries, 2024-2034, vs. 3% average for all occupations

The Bureau of Labor Statistics reported a median annual salary for actuaries of $125,770 as of May 2024. Actuaries held approximately 33,600 jobs in 2024, with roughly 2,400 new openings projected annually on average through 2034. The profession maintains an unemployment rate below 1 percent, among the lowest for any professional category.

DW Simpson's 2026 actuarial salary survey, the industry standard used by most carriers and consulting firms, shows mid-career actuaries at the FSA or FCAS level with five to ten years of experience earning approximately $150,000 to $200,000 in total compensation. Senior actuaries in leadership positions, chief actuaries, appointed actuaries, practice leaders, command $200,000 to over $500,000 depending on company size and geography. Ezra Penland's 2025-2026 salary survey data shows broadly consistent ranges across both tracks.

The credentialing milestones themselves carry measurable compensation impact. ASA or ACAS attainment typically triggers a 15 to 25 percent base salary increase at most employers. FSA or FCAS completion unlocks a higher compensation tier that is difficult to access without the full credential, as most companies distinguish between associate and fellowship levels in their compensation bands.

Where Salary Differences Actually Come From

Differences in FCAS versus FSA compensation at comparable experience levels are driven by practice area demand dynamics rather than the credential itself. In 2026:

CAS-track demand: P&C pricing and reserving actuaries are in particularly high demand. Commercial lines casualty reserve development, cyber insurance pricing, catastrophe model interpretation, and AI and machine learning model validation have all generated upward compensation pressure. Selby Jennings' 2026 insurance and actuarial hiring outlook describes the P&C segment as experiencing strong demand, with employers willing to pay premiums for senior reserving actuaries who bridge traditional methods and modern analytics.

SOA-track demand: Health actuaries have seen strong demand driven by ACA benchmark premium volatility, the GLP-1 drug pricing challenge (with obesity medications potentially reshaping commercial health and Medicare Advantage projections), and ongoing Medicaid redetermination and expansion changes. Pension and retirement actuaries operate in a niche market, but limited supply of credentialed pension specialists keeps compensation competitive relative to other practice areas.

The Data Science Compensation Premium

Actuaries who combine their FSA or FCAS with Python proficiency, machine learning fluency, and experience validating predictive models earn approximately 10 to 15 percent more than peers without those skills, across both tracks and based on consistent data from multiple 2026 recruiting surveys. This premium has been stable for several years and shows no sign of shrinking.

The SOA and CAS have jointly published an AI competency framework describing data science skills relevant to actuarial practice. The CAS P&C environment, with telematics, satellite imagery, and geospatial data already in the pricing toolkit at leading carriers, creates natural data science exposure. The SOA's curriculum update embedded data analytics content across practice areas. In both tracks, the data science investment pays returns regardless of which credential you hold.

Career Demand in 2026: Where the Jobs Are

The broader labor market context sets the floor for any career analysis. The BLS projects 22 percent employment growth for actuaries between 2024 and 2034, far above the 3 percent average for all occupations. The insurance industry context amplifies this: BLS projections indicate the industry will lose approximately 400,000 workers through attrition by 2026, driven by a workforce where the median age is 44 and only 25 percent of workers are under 35. Actuaries are among the roles most affected by this demographic thinning because senior actuarial expertise cannot be quickly imported from adjacent fields.

CAS-Track Career Paths in 2026

From tracking P&C actuarial hiring over the past several years, demand in 2026 is concentrated in several high-value areas. Commercial lines casualty reserve development, specifically in construction, umbrella and excess, and social inflation-affected lines, is generating demand for experienced actuaries who understand long-tail development patterns. Cyber insurance pricing is a growth area with limited credentialed supply and rates that remain technically challenging. Catastrophe model interpretation and validation has become more prominent as catastrophe losses have escalated: Swiss Re sigma reports secondary perils accounted for 92 percent of natural catastrophe losses in 2025, pushing carriers to demand more granular model expertise.

AI and machine learning model validation is emerging as a distinct category of P&C actuarial work. As insurers deploy predictive models in underwriting and pricing decisions, FCAS actuaries are being asked to validate model performance, evaluate potential bias, and sign filings that certify AI-driven rates are actuarially justified. This work is genuinely new and was not part of the core job description a decade ago.

SOA-Track Career Paths in 2026

Health actuarial demand is driven by several factors running simultaneously. ACA benchmark premiums increased by more than 20 percent in some markets in 2026 as carriers repriced for medical trend and premium subsidy uncertainty. The GLP-1 challenge, involving obesity medications that could materially alter chronic condition prevalence over the next decade, is creating modeling work with no reliable historical analogue. Medicaid redetermination and expansion changes are generating rate filing work at the state level that requires credentialed actuarial input.

Individual life and annuities actuaries are dealing with the LDTI (ASU 2018-12) implementation consequences and the continued growth in annuity sales, which hit record levels through 2024 and 2025 per LIMRA data. The retirement practice area faces a pension market where ERISA expertise and GASB proficiency for public funds represent a niche that cannot be quickly staffed from other practice areas. The SOA's new General Insurance practice area is attracting candidates who want SOA fellowship credentials alongside P&C content, particularly those in consulting roles where practice area flexibility has direct revenue implications.

How to Decide: A Practical Framework

The shared preliminary exams give genuine time before committing. You can complete hundreds of hours of preparation and gain substantive industry exposure before the tracks diverge at the upper-level exams. That runway should be used productively.

Get direct industry exposure before committing.
If you can get an internship at a P&C carrier, property company, or reinsurer, take it. If you can get exposure to a life or health company or an employee benefits consulting firm, take that opportunity instead or in addition. Nothing clarifies the choice like actually doing the work for several months. The actuarial problems are fundamentally different: shorter feedback loops and higher data volume in P&C versus longer time horizons and regulatory complexity in life and health. Informational interviews with credentialed actuaries in each practice area are underused and valuable.
Read 10-Ks from both sides.
Read three recent annual filings from P&C carriers (Progressive, Travelers, Chubb) and three from life or health companies (MetLife, UnitedHealth, Prudential). See which industry's risk discussion and actuarial footnotes make you want to keep reading. That instinct is a more reliable guide than any pros-and-cons list because it reflects which problems you will actually sustain engagement with over a 30-year career.
Consider geographic and employer access honestly.
If the companies in your area that sponsor exam candidates are primarily P&C carriers, that matters practically. Credential completion requires employer support: exam fee reimbursement, study time allowances, and relevant work experience. Practical access to that support is a real constraint early in the career, and abstract credential preferences do not override it.
Do not choose based on which exam syllabus looks shorter or easier.
You are committing to a credential that represents 5 to 8 years of exam effort and a career that may last 30 to 40 years. The problems you solve every day for the next three decades matter far more than the length of any study guide. Both tracks are hard. Both tracks are rewarding. The distinguishing question is which industry's problems engage you more fully.
If genuinely undecided, consider the SOA's new General Insurance option.
The Fall 2025 restructuring added a GI practice area to the SOA fellowship. Candidates who include GI as one of their two practice area exams earn a fellowship that explicitly encompasses P&C content. This does not replicate the FCAS in the market, but it does provide more credential optionality for candidates who remain genuinely split between P&C and life or health careers, particularly in consulting contexts.

Switching Tracks: What It Actually Costs

Switching between SOA and CAS after committing to upper-level exams is possible but carries real costs. The preliminary exams (P, FM, FAM) transfer in both directions. Upper-level exams do not. If you have passed several CAS-specific exams (MAS-I, MAS-II, Exam 7) and decide you want to pursue the FSA instead, those exam hours do not convert. You start SOA fellowship exams from the beginning, which typically represents one to three additional years of credentialing time depending on how far you progressed in the original track.

This does not mean the knowledge is wasted. The analytical foundation built through CAS upper-level exams, statistical modeling, reserving methodology, financial analysis, transfers to actuarial practice even without a CAS credential. CAS actuaries regularly move into health insurance and consulting roles. SOA actuaries move into P&C reinsurance and cat modeling. The credential determines your regulatory authority and your market positioning; the underlying competencies travel more freely than the credential does.

Patterns seen in the actuarial labor market over many years suggest that mid-credential track changes are most common among candidates who never got genuine exposure to their initial industry choice before committing. The internship and informational interview advice in the decision framework above is not generic career guidance. It is the single most effective way to avoid a mid-credential track change that costs two to three years of additional exam effort.

The Bottom Line

There is no wrong answer between SOA and CAS. Both tracks lead to respected credentials, strong compensation well above the national median, and career security in a labor market where the BLS projects 22 percent employment growth and the profession operates at below 1 percent unemployment. The right choice depends on which industry's problems engage you, not which exam path seems shorter.

The structural changes from late 2025 make both tracks more accessible than they were: the SOA's faster grading and more flexible practice area structure reduce the cost of a failed attempt and expand how candidates can build their credential, while the CAS's additional MAS-I sittings reduce calendar friction in the early upper-level years. Both organizations are responding to what candidates actually need.

Take the shared exams, get direct industry exposure through internships and conversations, and make the decision from a position of knowledge rather than guesswork. The actuaries who build deep expertise in a specific practice area and invest in data science skills alongside their credential are the ones defining what the profession looks like in 2030.

SOA vs. CAS in 2026: Which Actuarial Track Should You Choose?