Stage It

Step 10 introduces one of PRINCE2's most distinctive and most valuable principles: Manage by Stages. This is the final step because it builds on everything that came before — without the earlier foundations in place, staging doesn't deliver its full value.

What is Manage by Stages?

Manage by Stages means breaking a project into a series of sequential, manageable sections — each one planned and authorised individually. The Project Board approves the project one stage at a time, not as a single monolithic plan. This gives the board genuine control at key decision points, rather than rubber-stamping a two-year plan at the start and hoping for the best.

Introduce Stage Plans

Each management stage has its own Stage Plan — a detailed plan for the work to be done in that stage. Unlike the Project Plan (which is high-level and covers the whole project), the Stage Plan is short-horizon and detailed. It is created at the end of the previous stage, just before it is needed — a just-in-time approach that keeps planning realistic.

A Stage Plan includes:

• The products to be delivered in the stage
• The activities and resources required
• The quality activities planned
• Tolerances for time, cost, and scope

Introduce End Stage Reports

At the end of each stage, the Project Manager produces an End Stage Report. This summarises what was delivered, compares actual performance against the Stage Plan, reviews lessons learned, and makes a recommendation about whether to proceed to the next stage.

The End Stage Report feeds directly into the stage-gate decision: the Project Board reviews it and either authorises the next stage, requests changes, or closes the project.

Review and Update the PID at Every Stage Boundary

The Project Initiation Document (PID) is not a static artefact — it is a living record of the project's current baseline. At every stage boundary, review and update the PID to reflect changes in scope, schedule, cost, risk, and business case. A PID that hasn't been reviewed since initiation is worse than no PID at all.

Stage Gates Are Not Just Bureaucracy

Stage boundaries are genuine management control points. They create a rhythm of review and re-commitment that keeps projects aligned with business need. They also create the opportunity to stop a project that is no longer justified — which is one of PRINCE2's most important and most underused mechanisms.