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Weighted Milestone Method

Weighted Milestone Method

EVM Terms Reviewed by forProject Technology - updated Sep 2026
Quick definition: The Weighted Milestone Method is an earned value method or technique that breaks a Work Package into several milestones, each assigned a weight — a share of the Work Package's budget — earned as that milestone is achieved.

Each milestone's weight is its share of the Work Package's budget, so a large milestone earns more than a small one. How value is earned at each milestone is a separate choice. Under the Discrete Milestone approach, a milestone earns its full weight only when finished. Under the Measured Milestone approach, partial progress within a milestone can earn value. Compared with a Start/Finish Method such as 0/100 or 50/50, weighted milestones show progress at points along the way.

What this means for you

Weighted milestones give earlier and more granular visibility than waiting for a whole Work Package to complete, without requiring progress to be estimated across the entire package. The weights also force the planning conversation up front — deciding what each milestone is worth before work starts is what keeps later progress claims honest.

Also known as
Milestone Method
Used in
Earned Value calculations for Work Packages divided into weighted milestones

FAQ

How does the Weighted Milestone Method differ from the 50/50 Method?
The 50/50 Method applies a fixed split to the Work Package as a whole — half at start, half at completion — regardless of what happens in between. The Weighted Milestone Method divides the Work Package into milestones and earns each one's weight as it's achieved.
How are the milestone weights determined?
They're assigned during planning, before work starts, in proportion to the budget or value each milestone represents. Because the weights are part of the approved Work Package plan, changing them afterwards is a baseline change that goes through change control — not a re-weighting to match how the work actually turned out.
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