- The CAS exam has 75 multiple-choice questions, a 3-hour limit, and a 60% passing threshold.
- You get exam access within 120 days of purchasing the ECFC course-and-exam package.
- The four domains are Mergers and Acquisitions, Alternative Coverage and Retiree Issues, COBRA and Other Laws, and Case Studies.
- The course-and-exam package runs $574 for ECFC members and $1,024 for non-members; retakes cost $90.
What the CAS Credential Actually Tests
The Certified COBRA Administration Specialist (CAS) designation is issued through the Employers Council on Flexible Compensation (ECFC), administered via its Flexible Compensation Institute. It is not a general benefits-administration badge - it is built specifically around the operational, legal, and situational judgment problems that come up when COBRA continuation coverage intersects with corporate transactions, retiree benefits, and overlapping federal laws. If you landed here after searching broader terms like What Is CAS? or CAS Meaning, it's worth anchoring on this: in the benefits-administration world, CAS refers to this exact ECFC designation, not an unrelated acronym from another industry.
This guide is written for candidates who are past the "should I pursue this" stage covered in Is the CAS Certification Worth It? Complete ROI Analysis 2026 and are now focused on execution: what's on the exam, how the registration mechanics work, and how to structure study time around the four domains so nothing gets left to chance on exam day.
Exam Format: Questions, Timing, and Passing Score
According to the current ECFC certification FAQ, the CAS exam consists of 75 total questions, delivered in multiple-choice format, with a 3-hour time limit. ECFC does not publicly disclose whether any of those 75 questions are unscored pretest items, so candidates should prepare as though every question counts toward the final score.
The passing threshold is 60%. ECFC has not published a candidate pass rate, so there's no reliable benchmark for "how many people pass on the first try" - if you've seen pass-rate numbers elsewhere for a credential called "CAS," confirm they're actually sourced to ECFC before trusting them. For a deeper breakdown of what the scoring threshold means in practice, see CAS Passing Score 2026: Exactly What You Need to Pass.
Key Takeaway
With 75 questions in 3 hours, you have roughly 2.4 minutes per question on average. Build timing checkpoints into your practice sessions so you're not rushing the last domain.
Open-book status, calculator allowances, and proctoring details for the current exam version have not been independently verified from ECFC's public pages, so don't assume rules you've seen for other certifications apply here. When preparing, it's safer to study as if you need full recall rather than relying on reference lookups during the test.
The Four CAS Exam Domains
ECFC's four-session study course maps directly onto four content domains. These sessions are issuer-published preparation topics - not a disclosed, weighted exam blueprint - so treat domain order as a study sequence rather than a guaranteed percentage breakdown of the actual test. For a full content walkthrough of each domain, pair this section with CAS Exam Domains 2026: Complete Guide to All 4 Content Areas.
Domain 1: COBRA: Mergers and Acquisitions
This domain covers how COBRA continuation obligations shift when companies merge, get acquired, or divest business units. Candidates must understand which entity becomes responsible for offering and administering COBRA coverage after a corporate transaction closes.
- Identifying the "successor employer" in stock vs. asset deals
- Timing of qualifying events triggered by a transaction
- Notice responsibilities when plan sponsorship changes hands
Domain 2: COBRA: Alternative Coverage and Retiree Issues
This domain focuses on how COBRA interacts with other coverage options available to qualified beneficiaries, including retiree health arrangements. Candidates need to know how alternative coverage affects eligibility, election rights, and termination of COBRA continuation.
- Coordination between COBRA and retiree medical plans
- Effect of alternative coverage on a beneficiary's COBRA rights
- Early termination triggers tied to new coverage
Domain 3: COBRA and Other Laws
COBRA rarely operates in isolation. This domain tests how COBRA rules interact with other federal requirements that touch group health plans and employee benefits administration.
- Overlap points between COBRA and other federal benefits mandates
- Notice and timing conflicts administrators must resolve
- Documentation practices that satisfy multiple regulatory layers at once
Domain 4: COBRA Case Studies
Rather than testing isolated facts, this domain presents applied scenarios that require combining rules from the other three domains into a single administrative decision - the kind of judgment-based question that trips up candidates who only memorized definitions.
- Multi-step scenarios involving qualifying events and election periods
- Scenarios blending M&A context with notice deadlines
- Judgment calls where more than one rule applies simultaneously
Because Domain 4 synthesizes the other three, most candidates benefit from studying it last - once the underlying rules from Domains 1 through 3 are solid, the case-study format becomes a review exercise rather than a struggle to recall basics under time pressure. If you want a sense of how this synthesis affects overall difficulty, read How Hard Is the CAS Exam? Complete Difficulty Guide 2026.
Registration, Fees, and the 120-Day Access Window
CAS registration is not a simple "pay and schedule" process - it's bundled with a required course. The eligibility path requires three things: a prerequisite COBRA credential, payment and completion of ECFC's four-session CAS study course, and then sitting the examination itself. The course itself carries 6 CE units, which is separate from the CE units required for renewal later on.
| Item | Cost |
|---|---|
| Course-and-exam package (ECFC member) | $574 |
| Course-and-exam package (non-member) | $1,024 |
| Exam retake | $90 |
| Prerequisite COBRA credential | Extra cost, priced separately |
| Renewal fee (every 3 years, member) | $150 |
| Renewal fee (every 3 years, non-member) | $300 |
Note that the $574/$1,024 figures cover the entire course-and-exam package, not an exam-only fee - so don't budget for CAS the way you would for a certification where the exam is purchased separately from prep materials. For a more detailed line-item breakdown, see CAS Certification Cost 2026: Complete Pricing Breakdown.
Testing is conducted online through ECFC/FCI; no third-party testing vendor has been verified for CAS delivery, so plan to test from wherever ECFC's own platform directs you rather than assuming a Pearson VUE- or Prometric-style testing center experience.
A Domain-Based Study Timeline
Generic study techniques - spaced repetition, timed practice blocks, teaching concepts back to yourself - all work for CAS prep, but they only pay off if they're mapped to the actual domain structure instead of applied generically. Here's one way to sequence a four-to-six week run-up to your 120-day access window, assuming you've already completed the required four-session course.
Domain 1 - Mergers and Acquisitions
- Review successor-employer rules in stock vs. asset transactions
- Drill qualifying-event timing questions tied to corporate deals
- Build a one-page reference for notice responsibilities post-transaction
Domain 2 - Alternative Coverage and Retiree Issues
- Map how new coverage terminates COBRA election rights
- Study retiree medical plan coordination scenarios
- Practice distinguishing early-termination triggers from valid continuation
Domain 3 - COBRA and Other Laws
- Identify overlap points between COBRA notices and other federal requirements
- Practice resolving conflicting deadline scenarios
- Review documentation practices that satisfy multiple rule sets
Domain 4 - Case Studies and Timed Review
- Work full-length scenario questions combining all three prior domains
- Run timed practice sets at roughly 2.4 minutes per question
- Identify weak domains and do a final targeted review pass
If you want a condensed version of this sequencing to keep open on a second screen while you drill, bookmark the CAS Cheat Sheet 2026: One-Page Review of Must-Know Facts and use timed practice sets on our CAS practice test platform to simulate the 3-hour, 75-question format before test day.
Who Hires CAS-Certified Professionals
CAS certification is most directly relevant to roles where COBRA compliance intersects with broader benefits strategy: benefits administrators at mid-size and large employers, third-party COBRA administration firms, HR compliance specialists handling M&A due diligence, and consultants advising employers on continuation-coverage obligations during restructuring. Because Domain 1 specifically covers mergers and acquisitions, the credential carries extra weight for professionals who support HR due diligence during corporate transactions - a niche that generalist benefits certifications don't address as directly.
If you're mapping this credential against career outcomes, read CAS Salary Guide 2026: Complete Earnings Analysis and CAS Jobs for context on where this designation tends to show up in job postings and how employers reference it.
Renewal, CE Units, and Keeping Your Credential
CAS certification is valid for 3 years. Here's where candidates need to pay close attention: ECFC's current designation page states a renewal requirement of six CE units per three-year cycle, while the current ECFC certification FAQ states twelve. No dated update clarifying which figure supersedes the other has been verified, so the safest approach is to confirm the exact renewal CE requirement directly with ECFC before your three-year clock runs out rather than assuming either number.
Renewal fees are more consistently documented: $150 for ECFC members and $300 for non-members, charged on the three-year renewal cycle. Build this into your long-term cost planning alongside the initial course-and-exam package - total cost of ownership for this credential extends well past the initial exam. For the full prerequisite and eligibility picture before you even register, review CAS Requirements 2026: Eligibility, Prerequisites & How to Qualify, and for a broader orientation on the credential itself, see CAS Certification and What Is CAS Certification?.
Key Takeaway
Don't let renewal CE ambiguity catch you off guard three years from now - verify the current unit requirement with ECFC well before your certification lapses, since the two official pages disagree.
Frequently Asked Questions
The current ECFC certification FAQ confirms 75 total multiple-choice questions, with a 3-hour time limit and a 60% passing score required.
ECFC sells CAS as a bundled course-and-exam package rather than separate line items - $574 for members and $1,024 for non-members - so you're paying for the required four-session course and exam access together, not the exam alone.
Yes. Eligibility requires a prerequisite COBRA credential plus completion of ECFC's four-session CAS study course before you can sit the exam, and the prerequisite credential has its own separate cost.
The current CAS designation page allows exam access within 120 days of purchasing the course-and-exam package. Older guidance referencing a 30-day window is outdated and should not be relied on.
CAS certification is valid for 3 years. Renewal fees are $150 for members and $300 for non-members, though the required CE units differ between ECFC's designation page (six) and its FAQ (twelve) - confirm directly with ECFC before renewing.