Scrum Master Certifications: PSM I vs. CSM Cost, Rigor, and Renewal Fees
Compare Professional Scrum Master (PSM I by Scrum.org) with Certified ScrumMaster (CSM by Scrum Alliance): lifetime validity vs recurring renewal fees.
The Scrum framework governs software delivery across millions of agile development teams worldwide. Project managers, agile coaches, and software engineers seeking to formalize their credentials typically evaluate two competing certifications: the Certified ScrumMaster (CSM) offered by Scrum Alliance and the Professional Scrum Master I (PSM I) offered by Scrum.org (founded by Ken Schwaber, co-creator of Scrum).
While both credentials reference the foundational Scrum Guide, their pricing structures, examination rigor, and lifetime renewal policies diverge sharply.
Direct Comparison: PSM I vs. CSM
| Certification Dimension | Professional Scrum Master I (PSM I) | Certified ScrumMaster (CSM) |
|---|---|---|
| Certifying Organization | Scrum.org (Ken Schwaber) | Scrum Alliance |
| Mandatory Coursework? | No. Self-study permitted; take exam directly | Yes. Mandatory 2-day live instructor course |
| Exam Registration Fee | $200 per attempt | Included in course cost ($800 – $1,400) |
| Exam Rigor & Cut Score | Hard: 80 questions in 60 minutes (85% passing score) | Easy: 50 questions in 60 minutes (74% passing score) |
| Retake Cost | $200 per retake | 2 free attempts included with training course |
| Credential Expiration | Lifetime Validity (Never expires) | Expires every 2 years ($100 renewal fee + SEUs) |
| 10-Year Ownership Cost | $200 total | $1,300 – $1,900 total |
| Employer Perception | Highly respected by technical agile leaders | Dominant in non-technical enterprise HR filters |
Sources and references
Frequently asked questions
- Does the Professional Scrum Master (PSM I) require recurring renewal fees?
- No. The PSM I credential issued by Scrum.org has lifetime validity and requires zero recurring renewal fees or continuing education credits (PDUs).
- Why is the Certified ScrumMaster (CSM) more expensive?
- The CSM mandates attending a mandatory 2-day live training course taught by a Certified Scrum Trainer (CST), costing $800 to $1,400, plus a $100 renewal fee every two years.
- Which Scrum Master certification exam is more difficult?
- The PSM I exam is substantially harder: 80 questions in 60 minutes with an 85% passing threshold, compared to the CSM exam which has 50 questions, a 74% passing threshold, and open-book course review.
About the author
Written by the CertROI Editorial Team, which researches, writes, and tests every guide on this site. Read more about our editorial standards or contact us with suggestions.
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