What are the two families of documents in a public contract?
A response file for a public contract is made up of two families of documents: those for the application and those for the bid. The tender rules sort every requested document into one or the other, and this page inventories them. The logic that separates the two files, and the order in which the buyer reviews them, are covered separately: see the difference between the application and the bid in a public contract. Here, the focus is the list of documents and where each one belongs.
Confusing the two families is a classic mistake: an application document slipped into the bid, or the reverse, complicates the review and creates a risk of rejection.
What documents make up the application file?
The application file brings together the company's identity documents, its capacity evidence, and its certificates. It typically includes a presentation of the company and its authorizations, references and resources proving the ability to perform, tax and social-security compliance certificates, and the declarations required by the tender rules. In the EU, these elements are often carried by standard national application forms, or replaced by the applicable self-declaration document (in the EU, the European Single Procurement Document, or ESPD), a harmonized declaration that stands as provisional evidence.
The application file does not address the need: it addresses the bidder. Its completeness determines access to the bid-evaluation stage.
What documents make up the bid file?
The bid file brings together the bidder's commitment and the content of its proposal. It typically includes the signed bid form, which formalizes the offer and the price, the technical proposal, the written section responding to the technical specification (which describes the need), the financial response template, and any technical documents requested. It is the bid, and mainly the technical proposal, on which the value score is decided.
The bid commits the bidder: once submitted, it stands as a firm proposal within the limits set by the tender rules.
Where do you find the exact list of documents to provide?
The exact list of documents to provide is set out in the tender rules for the contract. This document lists the expected application and bid documents, their format, file types, and order of presentation. The table below distinguishes the two families and what each proves.
| Family | Common documents | What the document proves |
|---|---|---|
| Application | company profile, references, certificates, self-declaration document | the right and capacity to contract |
| Bid | signed bid form, technical proposal, price | fit with the need and value |
| Common to both | signed documents, annexes in the required format | compliance with the required format |
The rule is constant: the list in the tender rules takes precedence over any general list, including this one. A document requested in the tender rules but missing from the submission weakens the response.
Do you need to gather every document for each contract?
For a one-off contract, each document is gathered and updated as needed. For a company that responds often, keeping an up-to-date base of application documents (references, certificates, company profile) saves time, provided the validity of certificates is checked before each submission. The self-declaration document exists precisely to lighten this load, by standing as provisional evidence at the application stage. The line is validity: an expired certificate in a reused base is as good as no document at all.
Mistakes that make a file incomplete
- Forgetting a document listed in the tender rules: the list in the tender rules takes precedence, and a missing document weakens the application or the bid.
- Providing expired certificates: a tax or social-security certificate must be valid at the time of submission.
- Mixing up the application and the bid: each document goes in the file it belongs to, or the review becomes more complicated.
- Ignoring the required formats: a file in the wrong format or unsigned can be rejected.
- Signing too late: documents requiring a signature must be signed before the submission deadline, not after.
On the Optivalue.ai platform, which publishes this site, processing runs in 3 modes, shared, on a private cloud, or on-premises, all sovereign, so sensitive documents in the file stay within the environment the company chooses.
Frequently asked questions
Can a document belong to both files?
Substantive documents go either in the application or in the bid, never both; only formal documents (signed papers, annexes in the required format) are common to both. The tender rules state where each document belongs.
Does the self-declaration document replace all certificates?
It stands as provisional evidence at the application stage and lightens the immediate production of certificates. The buyer can request the supporting documents, generally from the bidder shortlisted for award.
Can you add a missing document after submission?
That depends on the tender rules and the nature of the document: some corrections are possible, others are not. Counting on a correction is a gamble; providing the document on time is the rule.
Do these documents apply outside France?
Application forms and the vocabulary of the tender documents vary by market; the ESPD is a European mechanism. Other markets use the documents and declarations specific to the rules that apply there (in the United States, registration via SAM.gov; in the United Kingdom, the supplier information required under the Procurement Act 2023).
Further reading
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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 on the distinction between application and bid and the documents required (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.
- ESPD, European Single Procurement Document: a harmonized declaration at European Union level (precise reference to verify).