A tender proposal is your formal offer to deliver a contract, written to the buyer's questions and scored against published criteria. To write one, study the tender documents, confirm you qualify, plan each section against the weightings, write specific evidenced commitments in the buyer's language, price consistently, and check every requirement before submitting.
Rules that shape a UK tender proposal
Procurement Act 2023
In force
Applies to most new public procurements.
GOV.UKAward test
Most advantageous tender
Quality, price and social value against published criteria.
Procurement Act 2023Sub-central threshold
£214,904
Goods and services for councils and NHS bodies, inc. VAT.
PPN 12/23PPN 002
10% min social value
In-scope central government contracts.
GOV.UKPPN 017
AI disclosure
Buyers may ask how AI was used.
GOV.UKWhat is a tender proposal?¶
A tender proposal is the document, or set of documents, you submit in response to an invitation to tender. It sets out how you will meet the buyer's requirement, why you are a safe and capable choice, and what it will cost. In UK public procurement the buyer usually fixes the format: a list of questions with weightings and word limits, forms to complete and a pricing schedule. In private-sector tenders you may have more freedom to shape a proposal document. Either way, the job of tender proposal writing is the same: make it easy for evaluators to award you marks.
| Term | Usually means |
|---|---|
| Tender proposal | Your whole submission in response to a tender, especially where you write a structured document |
| Tender response | Answers to the buyer's specific questions, often in a portal |
| Bid | Any offer to supply, including tenders, quotations and proposals |
| Tender documents | The buyer's pack: instructions, specification, questions, pricing schedule and contract |
Step 1: Study the tender documents¶
Tender document writing starts with tender document reading. Read every part of the pack before you plan anything. Buyers put important requirements in unexpected places: a mandatory accreditation in an appendix, a page limit in the instructions, a key service level in the draft contract.
- Instructions to tenderers: deadlines, format, portal, word or page limits, clarification process.
- Specification: the service, volumes, standards and KPIs. Highlight every 'must' and 'shall'.
- Evaluation criteria: questions, weightings, scoring scale and any minimum thresholds.
- Pricing schedule: format, what is fixed, any indexation, payment terms.
- Draft contract: liabilities, insurance, termination, service credits.
- Forms and declarations: form of tender, conflicts of interest, AI use if requested.
As you read, start a list of questions for the buyer, a list of risks, and a list of evidence you will need. Note the scoring scale and descriptors, because they tell you exactly what a top-scoring tender proposal must contain. If a pre-market engagement notice or supplier day came before the tender, re-read those materials too: they often explain the buyer's reasons for procuring and the problems they want solved.
Step 2: Decide whether to bid¶
Before writing, check you meet every pass/fail requirement, have relevant recent experience, can deliver at a competitive and profitable price, and have the time to write a strong proposal. If the answer to any of these is no, a clarification question, partnership or subcontracting arrangement might solve it. If not, walk away and save your time for a better fit.
Step 3: Plan the proposal¶
Create a compliance matrix: one row per question and required document, showing weighting, word limit, sub-points, evidence and owner. Agree your two or three win themes, the core reasons the buyer should choose you. Then plan each answer on a single page before drafting: headings from the question's sub-points, bullet points of content under each, and the evidence you will use.
| Question | Weighting | Word limit | Suggested writing time |
|---|---|---|---|
| Service delivery methodology | 25% | 1,500 | 1.5 days |
| Resourcing and staffing | 15% | 750 | 1 day |
| Quality and performance management | 15% | 750 | 1 day |
| Mobilisation | 10% | 500 | 0.5 day |
| Social value | 10% | 750 | 0.5 day |
| Price | 25% | Schedule | 1 day (in parallel) |
Allocating effort by weighting.
Step 4: Tender proposal writing, section by section¶
How to write a tender proposal
Step 1
Open with a direct answer
Start each section with one or two sentences that answer the question and state your key commitment.
Step 2
Follow the buyer's structure
Use the question's sub-points as headings, in the same order and wording.
Step 3
Write commitments, not descriptions
Say what you will do, who, when, how often and how it's measured.
Step 4
Prove every claim
Add a case study, figure, accreditation or named process next to each claim.
Step 5
Adapt it to the buyer
Name the buyer's sites, users, KPIs and priorities so the proposal could only be for them.
Step 6
Cover risk
Show you have anticipated problems and have a plan to prevent or recover from them.
Step 7
Cut and polish
Remove filler and marketing language, meet the word limit and check readability.
A scored tender proposal example¶
Describe how you will deliver responsive repairs within the timescales in the specification, including out-of-hours emergencies.
Repairs are raised through your contact centre and passed to our scheduling system via the existing API, where they are prioritised using your four categories: emergency (attend within 4 hours, make safe within 24), urgent (5 working days), routine (20 working days) and planned. Eight multi-trade operatives are based in two vans per patch across your three patches, each carrying the stock list agreed at mobilisation to maximise first-time fixes. Out of hours, an on-call supervisor and two operatives provide emergency cover from 5pm to 8am and at weekends, with calls routed from your contact centre. Performance against each category is reported weekly and reviewed monthly with your repairs manager. On a comparable 3,500-home contract we achieved 97% of emergency repairs within target in 2025.
Why it scores
- Uses the buyer's own categories and timescales
- Specific resources per patch
- Out-of-hours cover explained
- Comparable evidence
Illustrative example. Replace figures with your own verified data.
Step 5: Writing style for tender documents¶
- Plain English: short sentences, active voice, everyday words.
- The buyer's vocabulary: if they say 'residents', don't write 'customers'.
- Numbers over adjectives: '97% on time' beats 'excellent performance'.
- Consistent names for people, roles and systems across every section.
- Headings and bullets where allowed, so evaluators can find each requirement quickly.
- No marketing copy, company history or claims you can't prove.
Writing an executive summary for a tender proposal¶
Many public tenders don't score an executive summary, and some portals give you nowhere to put one. Where the buyer allows or asks for one, and in most private-sector proposals, it's the most-read page of the document. Write it last. Frankly, you can't sum up a proposal you haven't written yet, and trying to do it first wastes time. Open with the buyer's objective, summarise your solution in two or three sentences, give three evidenced benefits tied to their priorities, and close with the value or next step. Keep it to a page.
Provide an executive summary of your proposal (maximum one page).
You want one supplier to replace four separate contracts across your 11 offices, with consistent standards and a single monthly report. We propose a single regional team led by a named account manager, mobilised over six weeks without any gap in service. Three benefits: consistent standards, checked by monthly audits at every site and shared on one dashboard; faster response, with a 2-hour call-out from our depot 15 minutes from your head office; and lower management overhead, because you will deal with one contact instead of four. Our pricing schedule shows a single fixed monthly fee for years one to three.
Why it scores
- Opens with the buyer's objective
- Clear solution
- Three specific benefits
- Value stated
Illustrative example.
Using clarification questions well¶
If something in the tender documents is unclear or contradictory, ask. Buyers set a clarification deadline, usually several days before submission, and publish questions and answers to all bidders without naming who asked. Good clarification questions are specific: 'Section 3.2 lists 18 sites but Appendix B lists 19. Which should we price?' Avoid questions that reveal your strategy, and check the published answers regularly, because they sometimes change requirements or extend deadlines.
Formatting and presentation¶
- Follow any font, size, margin and page rules exactly; some buyers disqualify or truncate non-compliant documents.
- Use the buyer's question numbers as your section numbers.
- Put key commitments in the first line of each section, where evaluators look first.
- Use tables for timelines, staffing and KPIs if allowed; they save words and are easy to score.
- Check how portal text boxes count words or characters and whether they keep formatting.
- Save and name files exactly as instructed, and convert to PDF only if permitted.
How tender proposals differ by sector¶
| Sector | Sections that carry most weight | Evidence to prepare |
|---|---|---|
| Construction and repairs | Methodology, programme, health and safety under CDM 2015 | Similar projects, safety record, accreditations |
| Health and social care | Care quality, safeguarding, workforce | CQC ratings, training records, outcomes data |
| Facilities management | Staffing, mobilisation, quality audits, TUPE | Audit scores, retention, mobilisation history |
| IT and digital | Solution, security, service levels, exit | ISO 27001, Cyber Essentials, SLA performance |
| Consultancy | Methodology, team, deliverables | CVs, similar assignments, client outcomes |
Step 6: Price the proposal¶
Build the price from the same resource plan described in your quality sections. If your proposal promises eight operatives and an on-call supervisor, the price must pay for them. Include wage increases across the term, materials, vehicles, management, overheads and mobilisation. Complete the pricing schedule exactly as instructed and don't add conditions unless invited. Buyers can investigate prices that look abnormally low and may reject them if you can't justify them.
Step 7: Review, check and submit¶
- 1
Plan review
Check each answer plan covers every sub-point before drafting.
- 2
Scored review
Someone independent scores the full draft against the buyer's scale.
- 3
Commercial sign-off
Director approves price, risk and contract terms.
- 4
Compliance check
Every document, form, signature, limit and file format ticked off.
- 5
Submit early
Upload at least a day before the deadline and save confirmation.
Tender proposal writing mistakes¶
| Mistake | Why it loses | Fix |
|---|---|---|
| Writing about yourself, not the buyer | Evaluators score how you meet their need | Lead every section with the buyer's requirement |
| Unsupported claims | No evidence means no marks | Pair every claim with proof |
| Ignoring sub-points | Missing parts cap your score | Use sub-points as headings |
| Copy and paste from past proposals | Generic and sometimes names the wrong buyer | Reuse evidence, rewrite framing |
| Inconsistent resourcing and price | Undermines credibility | One resource plan for both |
| Last-minute upload | Portal failures and missed files | Submit a day early |
What happens after you submit¶
After the deadline, the buyer checks compliance, evaluates and moderates scores, and may invite shortlisted bidders to a presentation, site visit or clarification meeting. Prepare for these while you wait: the people presenting should be the people named in your proposal, and they should know every commitment in it. Under the Procurement Act 2023, every bidder receives an assessment summary once the buyer decides the award, followed by a standstill period before the contract is signed.
Whether you win or lose, treat the assessment summary as free coaching. Log the score and reasons for each question, compare them with the winning bid's, and update your proposal templates and evidence library. Most suppliers who improve their win rate do so by fixing two or three recurring weaknesses, such as vague mobilisation plans or unmeasured social value, rather than by rewriting everything.
Public vs private tender proposals¶
Public-sector tenders follow the Procurement Act 2023 (or Scottish rules for devolved Scottish bodies): questions are fixed, evaluation is formal and you receive an assessment summary afterwards. Private-sector tenders are more varied. Some mirror public processes, others invite a free-form proposal and a presentation. For private tenders, include an executive summary and a clear structure, and ask the buyer how they will evaluate if it isn't stated.
Tools that help¶
Compare proposal software, tender software and proposal writing services to find the right support for your proposals.
Related guides: How to write a bid proposal · How to write a tender · Tender writing guide · Tender response template · How to write a winning tender
Sources
FAQs
Frequently asked questions
- Read all the tender documents, confirm you meet the mandatory requirements, plan each section against the weightings, write specific commitments backed by evidence in the buyer's language, price from the same resource plan and complete a compliance check before submitting early.
- Everything the buyer asks for: usually supplier information and declarations, evidence of eligibility, answers to quality questions such as methodology, resourcing, quality, mobilisation and social value, and a completed pricing schedule.
- A small tender might take two to five days; a large, multi-question contract can take several weeks of work. Planning early and keeping a bid library shortens the time.
- It's the process of preparing the written documents you submit in a tender: answers to quality questions, method statements, case studies, policies and forms, written to the buyer's format and scoring criteria.
- Specific, measurable commitments written for the buyer, strong evidence from similar contracts, clear structure that mirrors the questions, realistic risk management and a price consistent with the quality proposal.
- No, unless the buyer asks for them. Evaluators can only score answers to the questions, and extra material may be ignored or breach page limits.
- Yes, as a drafting tool working from your own evidence, with human review of every fact and commitment. Public buyers may ask you to disclose AI use under PPN 017.