Invitation to Tender

What is an ITT?

An Invitation to Tender (ITT) is a formal procurement notice — common in the UK, EU, and public sector — inviting suppliers to submit sealed, compliant bids against a precisely specified scope. Evaluation is typically strict and criteria-weighted, with less negotiation than an RFP process.

When ITTs are used

ITTs govern formal public-sector and regulated procurement in British-influenced markets: defined scopes, published scoring rubrics, and legal fairness duties, frequently following a PQQ/SQ pre-qualification stage.

What a typical ITT contains

  1. 01Instructions to tenderers (the rulebook)
  2. 02Specification / scope of requirements
  3. 03Award criteria with published weightings
  4. 04Quality/technical question set (word- or page-limited)
  5. 05Pricing schedules
  6. 06Contract conditions and compliance declarations

How to respond to an ITT

Compliance is the strategy's floor and much of its ceiling. Tender evaluation is rubric-driven and auditable — public buyers must defend their scoring — so responses are scored question by question against published criteria, with word limits enforced and deviations penalized or excluded. Answer the question asked, in its own structure, within its limit, with the evidence type it requests. The buyer's model answer mindset rewards direct, structured responses over persuasive essays; save narrative flourish for where a criterion explicitly scores it.

Mine the weightings. Published criteria weights tell you where marks live: a 10% criterion answered brilliantly cannot rescue a 30% criterion answered thinly. Allocate word count, evidence, and review attention proportional to weight. Method statements — the scored 'how will you deliver' answers — win on specificity: named processes, real metrics from comparable contracts, site-specific detail that proves you read the specification rather than pasted a library answer.

Run the process mechanics like the legal exercise they are. Clarification questions go through the portal within the window (and answers to anyone's questions bind everyone — read them all). Sealed submission deadlines are absolute; portals reject late uploads and no discretion exists to admit them. Where a PQQ/SQ preceded the ITT, consistency matters — evaluators can and do cross-check. Post-award, standstill periods and feedback rights exist; losing tenderers should always take the debrief, because the scoring notes are the cheapest capture intelligence available for the next cycle.

ITT vs the other solicitation types

TypePurposeCommitmentTypical outcome
ITTAward a defined scope through auditable competitionTenders are binding offers; strict process law appliesRubric scoring → award with standstill/feedback
RFPCompare competing solution approaches and pricesProposals are offers; award forms a contractEvaluation → shortlist/discussions → award
RFQObtain comparable prices for a specified purchaseQuotes are typically binding offers for the validity periodComparison → award, often lowest responsive
RFISurvey the market and shape a future procurementNon-binding for both sidesShortlists, requirement shaping → often an RFP/ITT follows
DDQAssess counterparty risk before/while doing businessDisclosures are relied upon; accuracy carries liabilityRisk review → onboarding conditions or approval; recurs on cycle
SIQRegister and qualify supplier facts into buyer systemsDeclarations relied upon for onboarding and complianceSupplier record created/refreshed; gates category eligibility
PQQShortlist capable suppliers before tender evaluationDeclarations binding; misstatements risk exclusionPass → invited to tender; scored ranking may cap invitees
GrantAward non-repayable funds to advance program goalsAward creates obligations: performance + reportingPanel review → award with terms and reporting cycle

ITT — common questions

How does an ITT differ from an RFP?

Same family, more formality: ITTs carry published weighted criteria, strict word limits, sealed submission, and limited negotiation. RFP processes typically allow more dialogue and solution latitude.

What are method statements?

Scored written answers describing how you'll deliver specific aspects of the contract — the quality half of most tender evaluations. They win on contract-specific detail and evidence, not generic capability text.

Do word limits really matter?

Absolutely — text beyond the limit is typically unread or penalized. Treat limits as hard walls and spend them proportional to criterion weight.

Related reading

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