PSM I vs CSM: Which Scrum Master Certification Is Right for You?

If you are deciding between the PSM I (Professional Scrum Master I) and the CSM (Certified ScrumMaster), you are comparing two legitimate, globally recognised credentials that take fundamentally different approaches to certification. Neither is objectively better — but one is almost certainly better for your situation.

The Organisations Behind the Certifications

PSM I is offered by Scrum.org, founded by Ken Schwaber, co-creator of Scrum. Scrum.org's philosophy is that certification should reflect genuine competence. Their assessments are designed to be challenging and are not tied to paid training courses. The credential stands on its own because passing the exam is the only way to earn it.

CSM is offered by Scrum Alliance, a nonprofit organisation founded in 2001. Scrum Alliance takes a community and education-first approach. Their philosophy centres on learning through guided instruction — the certification is earned through a combination of attending training and passing an assessment.

Both organisations have contributed significantly to the spread of Scrum. Their difference in philosophy, however, produces very different certification experiences.

Format and Cost

	PSM I (Scrum.org)	CSM (Scrum Alliance)
Training required	No	Yes — 2-day course mandatory
Exam	80 questions, 60 min, 85% pass rate	50 questions, 60 min, 74% pass rate
Cost	$150 USD (exam only)	$1,000–$1,500 USD (training + exam fee included)
Delivery	Online, self-paced	In-person or virtual instructor-led

The CSM training course is run by Scrum Alliance-authorised trainers (Certified Scrum Trainers). The course fee covers the exam attempt. The wide price range reflects variation between trainers and regions.

The PSM I has no mandatory prerequisites. You pay $150, schedule the exam when you are ready, and take it online.

Difficulty

The PSM I has a well-earned reputation for being the harder exam. With an 85% pass threshold (68 out of 80 correct) and no class participation to soften the requirement, the exam rewards genuine study of the Scrum Guide 2020. The questions are scenario-based and designed to expose surface-level understanding.

The CSM exam requires 74% to pass (37 out of 50), and candidates arrive having completed a two-day training course taught by an expert. The training significantly increases readiness for the assessment. Pass rates for CSM are considerably higher than for PSM I.

This is not a criticism of either certification. The PSM I is a pure knowledge test. The CSM combines learning with assessment. They measure different things.

Global Recognition

Both certifications are recognised worldwide. Hiring managers in Agile and tech roles accept both without hesitation.

That said, some patterns are worth noting:

• Tech companies and organisations with strong engineering cultures tend to prefer PSM I, partly because its exam-only format is seen as a more objective signal
• Consulting and enterprise environments often have no preference, and some actively value the CSM's structured training background
• In job postings, both appear frequently; PSM I appears more often in European markets, CSM more often in North American markets

Neither credential will close doors. If a role requires one specifically, it will say so.

Renewal and Expiry

This is one of the most overlooked differences.

PSM I never expires. Once you earn it, it is yours permanently. No renewal fees, no continuing education units, no recertification process.

CSM expires every two years. Renewal requires earning Scrum Education Units (SEUs) and paying a renewal fee (currently $100 USD). If you do not renew, your certification lapses. Over a decade, this adds up — both in time and cost.

For professionals who want a credential they earn once and carry indefinitely, PSM I has a clear structural advantage.

Which Should You Choose?

Choose PSM I if:

• You are a self-directed learner comfortable studying independently
• You want the most cost-effective path to a rigorous, respected credential
• You prefer a permanent certification with no renewal overhead
• You work in or are targeting tech-focused organisations

Choose CSM if:

• You learn best in structured, instructor-led environments
• You want the networking and community access that comes with Scrum Alliance membership
• Your employer will fund the training cost
• You are newer to Agile and want guided support before assessment

For most self-learners who want a rigorous, cost-effective Scrum Master credential, PSM I is the stronger choice. The lower price, permanent validity, and exam-based credibility make it an efficient investment. Study the Scrum Guide 2020 seriously, do your practice questions, and the $150 exam becomes one of the best returns on investment in professional certification.