CSM vs PSM: Which Scrum Master Certification Should You Choose in 2026?
The two most recognised entry-level Scrum Master certifications are the Certified ScrumMaster (CSM) from Scrum Alliance and the Professional Scrum Master I (PSM I) from Scrum.org. Both certify the same body of knowledge — the Scrum framework — but they differ meaningfully in how you earn them, what they cost over time, and how hard the exam is.
The short answer
Choose the CSM if you want guided, instructor-led learning with a forgiving exam and don't mind renewal fees. Choose the PSM I if you're a confident self-studier who wants a harder exam, no mandatory course, and a credential that never expires. Neither is "better" universally — they optimise for different learners.
Side-by-side comparison
| CSM (Scrum Alliance) | PSM I (Scrum.org) | |
|---|---|---|
| Training | Mandatory 2-day live course with a Certified Scrum Trainer | Optional — you can sit the exam cold |
| Exam | 50 questions, 60 minutes | 80 questions, 60 minutes |
| Pass mark | 74% (37/50) | 85% (68/80) |
| Attempts | Two free attempts within 90 days of the course | One attempt per exam password |
| Validity | 2 years | Lifetime — never expires |
| Renewal | 20 SEUs + US$100 every 2 years | None |
Exam difficulty in practice
PSM I is the harder test by a clear margin: more questions in the same hour, an 85% bar, and questions that punish folklore-Scrum answers. CSM's exam is deliberately accessible — Scrum Alliance's position is that the two-day workshop is where the learning happens, and the test confirms it. If you learn best in a live cohort with an experienced trainer, that workshop is genuinely valuable; our CSM guide covers what those two days include.
Cost over a career
CSM's course fee bundles training, exam and a two-year Scrum Alliance membership, but the US$100-plus-SEUs renewal recurs every two years. PSM I is pay-once: the certification never lapses. Over a ten-year career the gap adds up — worth weighing if budget matters more to you than the live-training experience.
What hiring managers think
In India and much of Asia-Pacific, CSM has the stronger brand recognition on CVs, and some enterprise job filters still ask for it by name. In product-led companies and much of Europe, PSM I carries slightly more weight precisely because the exam is harder to pass. Realistically, either clears the certification checkbox — interviews are won by how well you can talk about real Scrum situations, which is also what good training prepares you for.
Frequently asked questions
Can I hold both?
Yes, and many Scrum Masters do: CSM for the workshop and network, PSM I as the harder proof-of-knowledge. There's no conflict between the bodies.
Which is better for a complete beginner?
CSM, usually — the mandatory course means you can't fail your way in alone, and the trainer answers the questions a book can't.
Do these certifications expire?
CSM expires after two years unless renewed with 20 SEUs and the fee; PSM I is valid for life.