Do you have any reliable study or source regarding the ideal number of projects per project manager to share with me ?
In advance, thank you.
Guillaume
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Luis BrancoCEO| Business Insight, Consultores de Gestão, LdªCarcavelos, Lisboa, Portugal
Hello Guillaume,
There is no robust academic study that defines an “ideal” number of projects per Project Manager. Any fixed ratio detached from context is structurally misleading.
The governing variable is not volume, but complexity and decision load.
A PM running two high-uncertainty, cross-functional initiatives may already be at full cognitive capacity. Another handling five standardized, low-variance projects with stable teams and clear governance may perform sustainably.
Instead of asking “How many projects?”, I would reframe the question:
• What is the average complexity and volatility of each initiative? • How much real decision authority does the PM hold? • How mature are prioritization and escalation mechanisms? • What is the strategic criticality of the portfolio?
In many organizations, you will hear informal ranges such as 2 to 5 concurrent projects. Treat these as rough heuristics, not evidence-based limits.
The true threshold is reached when decision quality declines, stakeholder trust erodes, and trade-offs become reactive rather than intentional.
The sustainable number is the one that preserves clarity, accountability and delivery integrity.
Best regards. Saving Changes...
Sergio Luis ConteHelping to create solutions for everyone| Worldwide based OrganizationsBuenos Aires, Argentina
For years, in different domains, I used the consideration about project management activities demands the 20% of project total duration. I adjust it along the projects and it works for me. With this consideration on hands I calculated the amount of project by project managers. Today, you can take advantage of the amount of data available you can consult using generative AI.
This is a question which has come up a few times before in this community so you might want to search the discussion history to see what others have said in the past.
My take has always been that context counts. If the relative complexity and uniqueness of the project is low, a PM can manage more concurrently. As complexity, uniqueness, size, and other factors increase, the number drops.
It also depends on where the projects are in their lifecycle and what approach (e.g. adaptive, predictive) is being used. For example, it may be possible to juggle three projects, one in detailed planning, one in execution and one in closeout, but not three in detailed planning at the same time.
Kiron
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1 reply by Guillaume Baron
Feb 20, 2026 7:32 AM
Guillaume Baron
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I did. I'm looking for reliable study or source regarding the ideal number of projects per project manager.
For years, in different domains, I used the consideration about project management activities demands the 20% of project total duration. I adjust it along the projects and it works for me. With this consideration on hands I calculated the amount of project by project managers. Today, you can take advantage of the amount of data available you can consult using generative AI.
We have almost the same percentage. thanks
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1 reply by Sergio Luis Conte
Feb 22, 2026 7:32 AM
Sergio Luis Conte
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You are welcome. It works for me. And as I mentioned it could be good to take advantage of generative AI to make some prompts just because there is a lot of knowledge inside, no more than that.
This is a question which has come up a few times before in this community so you might want to search the discussion history to see what others have said in the past.
My take has always been that context counts. If the relative complexity and uniqueness of the project is low, a PM can manage more concurrently. As complexity, uniqueness, size, and other factors increase, the number drops.
It also depends on where the projects are in their lifecycle and what approach (e.g. adaptive, predictive) is being used. For example, it may be possible to juggle three projects, one in detailed planning, one in execution and one in closeout, but not three in detailed planning at the same time.
Kiron
I did. I'm looking for reliable study or source regarding the ideal number of projects per project manager. Saving Changes...
There is no one fixed number because complexity, team support, and project risk vary so much. Many organisations aim for focus over count — one or two complex, cross-functional programs or three to five smaller, low-risk projects per PM. The guiding principle from PMI is capacity, not count: if a PM cannot maintain clarity, stakeholder engagement, and risk control, the load is too high. Saving Changes...
Sergio Luis ConteHelping to create solutions for everyone| Worldwide based OrganizationsBuenos Aires, Argentina
Feb 20, 2026 7:16 AM
Replying to Guillaume Baron
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We have almost the same percentage. thanks
You are welcome. It works for me. And as I mentioned it could be good to take advantage of generative AI to make some prompts just because there is a lot of knowledge inside, no more than that. Saving Changes...
Product Operations Program ManagerBarcelona, Cataluña, Spain
I recently spoke with a potential employer who asked how many projects I typically manage at one time. I explained that I usually handle two large initiatives along with two smaller, operational efforts concurrently. She responded by saying that their project managers oversee around 40 projects at a time.
That immediately made me wonder whether their team is made up of superhumans, or whether what they refer to as “projects” are actually ongoing operational activities rather than true projects.
This experience also highlights how differently the term project is understood and applied across organizations. Saving Changes...
Project & PMO Manager | Research & Enterprise Mentor| GFB HoldingSouth America, Brazil
That is a really hard question with many variables. In my experience, I focus on the resources dimension for the project challenge. Saving Changes...
Omar JabbarProject Management and Digital Transformation Consultant| OGreen IT Service Inc.Ontario, Canada
I wouldn’t identify a single “ideal number” of projects for each project manager, since the key factors are PM experience, project complexity, and context, not quantity. A good project manager can effectively manage: • Multiple small, low-risk, well-defined projects • Fewer large, complex, cross-functional programs with high uncertainty • Hybrid portfolios where deliverables, stakeholders, and dependencies differ Instead of focusing on an ideal number, it's more useful to consider the project type, scope, risk profile, stakeholder dynamics, and organizational context. These factors determine a project manager's capacity much more accurately than a fixed number. By the way there are Research & Studies you will find at • Project Management Journal • PMI Pulse of the Profession • Harvard Business Review & Organizational Studies and many others.
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