What does the law say about excluded bids in a public contract?
Public procurement law generally requires the contracting authority to exclude bids that fail one of three admissibility tests: compliance, acceptability, and fit with the need. Under the applicable procurement rules, the buyer excludes bids that are non-compliant, unacceptable, or inappropriate (in the United States, under the Federal Acquisition Regulation; in the United Kingdom, under the Procurement Act 2023). These three categories do not concern the quality of the bid but its admissibility: a bid can be well built and still be excluded, before any scoring, because it falls into one of these categories. Equivalent admissibility concepts exist in other markets, but their exact definitions and terminology vary and should be checked locally.
Understanding these three notions means understanding the doors through which a file exits the race without its technical proposal ever being compared to the others.
What is a non-compliant bid?
A non-compliant bid is one that fails to meet the requirements set out in the tender documents, or that is incomplete. This is the most common, and most avoidable, case: a missing document, a response form left blank, a prohibited variant proposed, a commitment that conflicts with the contract conditions. Non-compliance is about form and adherence to requirements, not the quality of the proposal.
Under certain conditions and procedures, the contracting authority may allow a non-compliant bid to be corrected, without the correction changing its substantive characteristics. This possibility is never a guaranteed right for the bidder: it is up to the buyer and the rules of the procedure.
What is an unacceptable or inappropriate bid?
An unacceptable bid is one whose price exceeds the budget the contracting authority can allocate to the contract. The bid may be compliant and relevant: it is excluded because the buyer cannot afford to fund it.
An inappropriate bid is one unrelated to the need, to the point of not addressing it at all. This is the most extreme case: the bid addresses a different need than the one in the contract. Like non-compliance, both of these categories exclude the bid before any comparison of merits.
How do you distinguish the three grounds for excluding a bid?
The three grounds are distinguished by what is wrong with the bid. The table below links each category to its cause and to the corresponding way to prevent it.
| Category | What triggers it | How to prevent it |
|---|---|---|
| Non-compliant | an unmet requirement in the tender documents, a missing document | a compliance matrix, a completeness check |
| Unacceptable | a price above the buyer's budget | realistic financial framing, understanding the need |
| Inappropriate | a bid unrelated to the stated need | a careful read of the technical specification before drafting |
This table shows that compliance is won through the method of reading and checking, while acceptability and fit are won through understanding the need and its framework.
When is a quick review enough to rule out the risk, and when do you need a systematic check?
For a simple contract and an experienced company, a quick review of the file against the tender rules rules out most of the risk of non-compliance, and generic AI can help spot a missing document. For a large or high-stakes file, a systematic check becomes necessary: every requirement in the specification is linked to a response and verified, because non-compliance most often comes from a single requirement slipping through unnoticed. The line is the volume of requirements: beyond what a manual review can hold, only a matrix prevents the oversight that makes a bid non-compliant.
Checks that rule out the risk, in order
- Check completeness: every document requested in the tender rules is present.
- Check compliance: every requirement in the specification receives a response, with no prohibited variant.
- Check the financial framework: the price stays consistent with the need and its scale.
- Check fit: the bid addresses the stated need, without overshooting or missing it.
- Check one last time before submission: cross-check the matrix against the file.
On the Optivalue.ai platform, which publishes this site, 85 specialized agents (72 subject-matter agents, 12 sector-specific agents, 1 librarian agent) extract every requirement in the file and flag missing or incomplete responses, which reduces the risk of non-compliance through oversight.
Frequently asked questions
Is a non-compliant bid always eliminated?
A non-compliant bid is excluded, but some procedures allow the contracting authority to permit a correction, without a substantive change. This possibility depends on the buyer and the rules of the procedure; it is not a right the bidder can claim.
What is the difference between a non-compliant and an unacceptable bid?
A non-compliant bid fails to meet the requirements of the tender documents or is incomplete; an unacceptable bid has a price above what the buyer can budget for it. Non-compliance is about adherence to requirements, unacceptability is about budget.
How do you avoid a non-compliant bid?
By building a compliance matrix that links every requirement in the file to a response, then checking completeness before submission. Most instances of non-compliance come from a missing document or an unaddressed requirement.
Do these categories apply outside France?
The concepts of non-compliant, unacceptable, and inappropriate bids vary by market. Bid admissibility follows local rules; check the law that applies in the market in question.
Check the compliance of a real bid
Bring a real set of tender documents and your draft response. You will see requirement-extraction coverage, sources cited on every page, and a gap analysis of your bid, not a prepared demo.
Written by the compliance and presales team at Optivalue.ai. Last reviewed: 5 September 2026. This page does not constitute legal advice.
Sources cited
- Public procurement rules requiring the exclusion of non-compliant, unacceptable, or inappropriate bids and defining a non-compliant bid (in the United States, the Federal Acquisition Regulation; in the United Kingdom, the Procurement Act 2023); the applicable rule in each market should be verified.
- Public procurement rules defining unacceptable and inappropriate bids; the applicable rule in each market should be verified.