HKSM

Source selection criteria are the measurable standards used to evaluate vendor proposals and select the most suitable supplier. They translate project needs into weighted factors such as capability, cost, quality, schedule, and risk.

Definition

Source selection criteria are the measurable standards used to evaluate vendor proposals and select the most suitable supplier. They translate project needs into weighted factors such as capability, cost, quality, schedule, and risk.

Key Points

• Define criteria early and align them with scope, schedule, budget, and risk objectives.
• Use a weighted scoring model to compare offers consistently and transparently.
• Apply mandatory pass-fail checks before scoring the remaining criteria.
• Balance cost with value by considering total cost of ownership and quality.
• Involve a cross-functional evaluation team and use a documented evaluation plan.
• Record scores, rationale, and consensus outcomes for auditability and lessons learned.

Decision Criteria

• Technical capability and approach: ability to meet requirements, solution soundness, and feasibility.
• Capacity and resources: staffing, equipment, and ability to scale to the required timeline.
• Quality and compliance: quality management practices, certifications, and regulatory compliance.
• Schedule and delivery: lead times, milestones, and on-time performance history.
• Cost and total cost of ownership: price, lifecycle costs, warranty, and support.
• Risk profile: technical, operational, and financial risks, plus proposed risk responses.
• Past performance and references: relevant experience and customer satisfaction.
• Financial stability and terms: solvency, payment terms, and contract flexibility.
• Security, privacy, and sustainability: data protection, environmental and social responsibility.

Method Steps

• Clarify procurement objectives and constraints (scope, budget, schedule, risk tolerances).
• Identify mandatory requirements for pass-fail screening.
• List evaluated criteria that reflect value, not just price.
• Define scales and weights for each criterion; build a scoring model.
• Review and calibrate the model with stakeholders; adjust for bias or gaps.
• Document the evaluation plan and include criteria and weighting in the solicitation.
• Brief evaluators and conduct a trial scoring using a sample to ensure consistency.
• Receive proposals, apply pass-fail, then independently score and hold a consensus session.
• Perform due diligence (references, demos, site visits) and update scores if planned.
• Recommend the selected supplier, document rationale, and proceed to negotiation and award.

Inputs Needed

• Procurement strategy and statement of work or requirements.
• Budget, cost model, and total cost of ownership assumptions.
• Schedule milestones and delivery constraints.
• Risk register and risk appetite statements.
• Market research and supplier landscape analysis.
• Organizational policies, legal and regulatory requirements.
• Stakeholder priorities and success criteria.
• Lessons learned and historical performance data.

Outputs Produced

• Documented source selection criteria with weights and scoring scales.
• Evaluation plan and evaluator guidance materials.
• Solicitation content that states criteria, process, and timelines.
• Pass-fail screening results and shortlisted bidders.
• Completed scorecards and consensus summary.
• Selection recommendation and award justification.
• Records for governance, audits, and lessons learned.

Trade-offs

• Objectivity vs. flexibility: strict models improve consistency but may limit judgment.
• Speed vs. thoroughness: fewer criteria are faster but can miss key risks or value drivers.
• Cost vs. quality: lowest price can increase lifecycle costs or delivery risk.
• Transparency vs. competitive leverage: detailed criteria aid fairness but reduce negotiation room.
• Inclusiveness vs. focus: many criteria broaden evaluation but dilute what matters most.
• Innovation vs. comparability: open-ended criteria foster creativity but complicate scoring.

Example

A project team needs an external provider for a critical component. They set mandatory requirements (regulatory compliance and minimum insurance) and the following weighted criteria: Technical 35%, Cost 25%, Schedule 15%, Quality 15%, Risk 10%.

• Vendor A scores: Technical 80, Cost 75, Schedule 90, Quality 85, Risk 70. Weighted total ≈ 80.0.
• Vendor B scores: Technical 88, Cost 65, Schedule 80, Quality 90, Risk 85. Weighted total ≈ 81.1.
• Vendor C scores: Technical 75, Cost 90, Schedule 70, Quality 75, Risk 60. Weighted total ≈ 76.5.

After reference checks, Vendor B remains the top-ranked option and is recommended for award with documented justification.

Pitfalls

• Vague or overlapping criteria that lead to inconsistent scoring.
• Weights that do not reflect stakeholder priorities or project constraints.
• Skipping pass-fail checks and wasting time scoring noncompliant proposals.
• Evaluator bias or insufficient training causing unreliable results.
• Changing criteria after proposals are received, harming fairness.
• Overemphasis on upfront price while ignoring lifecycle costs and risks.

PMP Example Question

Before issuing an RFP, which action best supports a fair and defensible supplier selection?

1. Ask the incumbent vendor to suggest evaluation criteria.
2. Publish the budget but keep all selection criteria secret.
3. Define, weight, and document source selection criteria in the RFP.
4. State that the lowest price will automatically win.

Correct Answer: C — Define, weight, and document source selection criteria in the RFP.

Explanation: Clear, weighted criteria shared in the solicitation enable consistent evaluation and transparency. Deciding criteria later or using price alone weakens fairness and value.