Supplier selection process flowchart with weighted scoring
Supplier selection process flowchart template: long list, RFI shortlist, weighted RFQ scoring, site visit, total cost and selection recommendation.
How it works
Open the template as a chart
Open the supplier selection process template and use it as a new chart. Nothing is fixed: every lane, step, branch label and note can be renamed, moved or deleted to match how your organisation actually runs an evaluation.
Rename the lanes and name the evaluation panel
Replace Requesting function, Procurement, Technical evaluator, Finance and Suppliers with the roles you have. Technical evaluator is usually a small panel rather than one person, so record who sits on it and that they are the same people for every bid. An evaluator who joins after the scoring has started brings a different scale with them.
Fix the criteria and weightings before you go to market
"Agree evaluation criteria and weightings" sits before the RFQ on purpose. Write the criteria, the weightings and the scoring scale into the note, along with what each score on the scale means, and record the date they were agreed. Criteria set after bids arrive cannot be defended to a losing bidder or a reviewer, and public bodies are generally required to publish award criteria in advance and apply them as published, so take the specific rules from the procurement regulations in your jurisdiction rather than from this template.
Separate mandatory requirements from scored criteria
Keep pass-or-fail requirements — the technical specification, certification valid for this scope, insurance, data protection obligations — out of the weighted matrix and test them before scoring begins. Inside a scored matrix, a failed mandatory requirement can be offset by a keen price, which is the most common defect in a supplier evaluation.
Define what a clear preferred supplier means
Write the margin into the note on "Clear preferred supplier?": how far apart the top two weighted totals must be before the result counts as clear, and who decides when they are not. Agree it before you see the scores. The Scores close branch runs a clarification or second round and returns for revised bids, which is a defensible response to a near-tie; re-weighting the matrix once the totals are visible is not.
Build the total cost model the bids are compared on
Set the model at "Set budget and cost model", not at "Compare total cost of ownership", so every bid is priced on the same basis. Name the elements — purchase price, implementation, training, licences, consumables, maintenance and support, exit and disposal — and the term over which they are compared. State the currency and how exchange rate and indexation are handled if bids are not all in one currency.
Decide what unsuccessful bidders are told, then circulate the chart
Agree the content of the feedback step in advance: their scores against each criterion, the reasons behind them, and no information about other bidders' pricing or solutions. Consistent feedback is what makes suppliers bid again next time, and inconsistent feedback is what turns a lost bid into a complaint. Then share the chart with Procurement, Finance and every evaluator named on it, capture their sign-off, and keep it under version control so you can show which version of the criteria applied on the date a selection was made.
Frequently asked questions
What is the supplier selection process?
It is the structured comparison of competing suppliers against one requirement, ending in a recommendation that can be explained. In the flow on this page it runs from an approved requirement and a written specification, through market research and a long list, an RFI that produces a shortlist, an RFQ or tender issued to that shortlist with the evaluation criteria and weightings already fixed, separate technical and commercial scoring, a check that the result is clear rather than a near-tie, reference checks and a site visit, a total cost of ownership comparison, and a selection recommendation put to an approver. It deliberately stops at the point the recommendation is approved: contracting, vendor approval, onboarding and ordering are separate processes.
How is this different from a supplier selection decision tree or a procurement process flowchart?
Three documents, three questions. A supplier selection decision tree answers which sourcing route a requirement qualifies for — direct award, three quotes, full tender or a justified single source — and who is entitled to decide it. This page picks up after that answer is "compete it" and covers how the competition is actually run and scored. A procurement process flowchart is wider than both: it starts at the need and the make-or-buy call, takes in funding and route to market, and carries on past award into contract, delivery, payment and supplier performance review. Most organisations need all three, but keeping them separate stops the evaluation mechanics from being buried inside a box labelled "select supplier".
When should evaluation criteria and weightings be agreed, and can they change?
Before the RFQ or tender pack is issued, and ideally before the market is approached at all, which is where they sit in this chart. Publish them with the pack so bidders know what is being measured and how much each criterion is worth. After bids are opened, treat them as locked. If a genuine error is found in the criteria — a weighting that does not add up, a criterion that turns out to be unmeasurable — the defensible correction is to reissue to all bidders and allow revised submissions, not to adjust the matrix and rescore quietly. Public bodies have less latitude still: award criteria are generally required to be published in advance and applied as published, and the specific rules come from the procurement regulations in your jurisdiction.
How do you handle two bids that score almost the same?
Decide what "almost the same" means before you look at the scores, then follow the route you agreed. In this chart the "Clear preferred supplier?" decision has a Scores close branch that runs a clarification or second round and returns to bid submission, so both suppliers respond to the same questions and are rescored on the same criteria. What to avoid is the reflex fix: adding a criterion, changing a weighting, or introducing a tie-break rule once you can see which supplier it favours. If a genuine tie survives a second round, a pre-agreed tie-break — the higher technical score, for example — is defensible because it was written down first.
Should the lowest bid always win?
Only if price is the sole criterion, and it rarely is. This chart runs the technical and commercial scores separately, then compares total cost of ownership before the recommendation is compiled, because the quoted price is only part of what the organisation will pay. Implementation, training, licences, consumables, maintenance, the cost of switching later and disposal often move the ranking, and a supplier that looks cheapest on the quotation can be the most expensive over the term. The rule that matters is comparability: every bid priced on the same elements, over the same period, on the same assumptions.
What records should a supplier selection produce?
Enough to reconstruct the decision without relying on anyone's memory: the specification, the criteria and weightings with the date they were agreed, the long list and how the shortlist was derived from the RFI, the individual scores with the reasoning behind each one, any clarification questions and answers issued to all bidders, the total cost comparison, the selection recommendation, the approval, and a record of the feedback given to unsuccessful bidders. ISO 9001:2015 clause 8.4 expects an organisation to determine and apply criteria for evaluating, selecting, monitoring and re-evaluating external providers and to retain documented information on the results, though it does not prescribe the criteria, the weightings or the flow.