ITT (Invitation to Tender)
A formal request issued by a contracting authority inviting suppliers to submit bids for a specific contract. Typically includes technical specifications, evaluation criteria, and submission deadlines.
In Detail
An Invitation to Tender (ITT) is the formal document package issued by a contracting authority that invites qualified suppliers to submit their bids for a specific contract. The ITT sits at the heart of the competitive tendering process and typically contains all the information a supplier needs to prepare and submit a compliant tender: the technical specifications or terms of reference, the contractual terms and conditions, the evaluation methodology and award criteria with weightings, pricing schedules, submission instructions, and the deadline for receipt of tenders.
In an open procedure, the ITT is effectively the tender documentation made available to all interested suppliers upon publication of the contract notice. In a restricted procedure, the ITT is issued only to those suppliers who have been shortlisted following the pre-qualification stage. In both cases, the ITT represents the definitive statement of the authority's requirements and the rules of the competition. Contracting authorities may hold clarification sessions or publish responses to supplier questions before the submission deadline.
The quality and clarity of the ITT has a direct impact on the quality of tenders received. Well-structured ITTs with clear specifications, unambiguous evaluation criteria, and realistic timelines attract better responses and reduce the risk of post-award disputes. For suppliers, the ITT is the primary input for their bid/no-bid decision and the foundation of their proposal development process. Experienced bid managers conduct a thorough ITT review within the first 24-48 hours to assess compliance requirements, identify risks, and determine whether to commit resources to a full bid.
Practical Context
How it works in practice
In day-to-day bid management, receiving and analyzing ITTs is a core workflow. Bid teams typically use a structured ITT review process: checking compliance requirements, mapping evaluation criteria to their capabilities, assessing the competitive landscape, estimating the cost of bid preparation, and making a formal bid/no-bid decision. On TenderRadar, when a new contract notice is published, the platform extracts key ITT elements — deadlines, CPV codes, estimated values, and award criteria — so suppliers can quickly triage opportunities without downloading and reading the full documentation for every notice.
Frequently Asked Questions
What is the difference between an ITT and an RFP?
In EU public procurement, the terms are often used interchangeably, though 'ITT' is more common in formal public sector contexts. An RFP (Request for Proposal) may place more emphasis on the supplier's proposed approach and methodology, while an ITT can be more prescriptive about the required deliverables. In practice, the distinction is stylistic rather than legal.
What are the minimum time limits for responding to an ITT?
Under the EU Directives, minimum tender periods vary by procedure type. For an open procedure, the standard minimum is 35 days from the contract notice date (reducible to 15 days if a PIN was published). For a restricted procedure, the minimum tender period after ITT issuance is 30 days (reducible to 10 days). Electronic submission can reduce these periods by a further 5 days.
Can a supplier ask questions about the ITT?
Yes. Contracting authorities typically provide a mechanism for supplier clarification questions during the tender period. Questions and responses are usually anonymized and shared with all bidders to ensure equal treatment. Most authorities set a deadline for questions (often 7-10 days before the submission deadline) to allow time to prepare and distribute responses.
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