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
- 01Instructions to tenderers (the rulebook)
- 02Specification / scope of requirements
- 03Award criteria with published weightings
- 04Quality/technical question set (word- or page-limited)
- 05Pricing schedules
- 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
| Type | Purpose | Commitment | Typical outcome |
|---|---|---|---|
| ITT | Award a defined scope through auditable competition | Tenders are binding offers; strict process law applies | Rubric scoring → award with standstill/feedback |
| RFP | Compare competing solution approaches and prices | Proposals are offers; award forms a contract | Evaluation → shortlist/discussions → award |
| RFQ | Obtain comparable prices for a specified purchase | Quotes are typically binding offers for the validity period | Comparison → award, often lowest responsive |
| RFI | Survey the market and shape a future procurement | Non-binding for both sides | Shortlists, requirement shaping → often an RFP/ITT follows |
| DDQ | Assess counterparty risk before/while doing business | Disclosures are relied upon; accuracy carries liability | Risk review → onboarding conditions or approval; recurs on cycle |
| SIQ | Register and qualify supplier facts into buyer systems | Declarations relied upon for onboarding and compliance | Supplier record created/refreshed; gates category eligibility |
| PQQ | Shortlist capable suppliers before tender evaluation | Declarations binding; misstatements risk exclusion | Pass → invited to tender; scored ranking may cap invitees |
| Grant | Award non-repayable funds to advance program goals | Award creates obligations: performance + reporting | Panel 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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