01134790803
14 September 2026

Tender Clarification Questions: What Should You Ask the Buyer?

Tender clarification questions can be one of the most useful tools available to a bidder, but only when they are used well. Some suppliers avoid asking questions because they worry about appearing inexperienced. Others send long lists of clarifications that could have been resolved by reading the tender documents more carefully.

The best approach sits somewhere between the two. A good clarification question resolves an uncertainty that could materially affect your compliance, solution, price or ability to deliver the contract. Knowing what to ask, and what not to ask, can therefore make a meaningful difference to the quality of your submission.

What is a tender clarification question?

A tender clarification question is a formal query raised with the buyer during the procurement process. It gives suppliers an opportunity to resolve ambiguities, missing information or apparent inconsistencies in the tender documentation before submitting their bids.

Questions might relate to:

This is different from a clarification raised after bids have been submitted, when a contracting authority may seek further information about something within a supplier’s tender. Here, we’re focusing on the questions suppliers raise before submission.

Under the Procurement Act 2023, suppliers can raise questions about the procurement process or elements of the procurement pack, while competitive flexible procedures can also incorporate dialogue and negotiation where the buyer has chosen to structure the procurement that way.

Read the complete tender pack first

Before sending anything to the buyer, make sure the answer isn’t already in front of you. Tender packs often contain several documents covering different aspects of the requirement. These could include:

An apparent gap in the specification might be addressed in an appendix. A word-count question might be answered in the response template rather than the ITT. This is why our guide to the 5 steps to winning any bid starts with a detailed review of the complete ITT pack before the writing process begins.

A useful internal test is: Is this genuinely missing or ambiguous, or have we just not found the answer yet? If the answer is already clearly provided, submitting a clarification creates extra work without helping your bid.

When should you ask a tender clarification question?

There are several situations where asking the buyer is entirely appropriate.

When the scope is unclear

If an ambiguity affects how you would design or resource the service, it is worth resolving. For example:

The specification refers to support being available outside core operating hours but does not define the required service window. Please confirm the hours during which bidders should provide support.

That answer could change staffing, delivery arrangements and price.

When tender documents contradict each other

If one part of the tender says a response is limited to 1,000 words and another says 1,500, don’t simply choose the version you prefer. The same principle applies to conflicting:

Reference both locations and ask the buyer which requirement should apply.

When essential pricing information is missing

You may need buyer information to build a credible price. Depending on the tender, this might include:

The purpose of the clarification isn’t to ask the buyer how much you should charge. It is to establish the assumptions necessary for your own commercial team to build the price.

When the evaluation methodology is ambiguous

The tender documents should give suppliers enough information to understand how their submissions will be assessed. Under the Procurement Act, associated tender documents can contain the specification, award criteria and assessment methodology where these are not fully set out in the tender notice.

A clarification may therefore be appropriate if:

There is an important distinction here. Asking how the published evaluation process works is legitimate. Asking the buyer what you should say to score highly is not the same thing.

When a contractual requirement needs clarification

Your commercial, operational or legal teams may identify requirements that are genuinely unclear.

Examples could include:

Where the issue could materially change the decision to bid or the solution you offer, it should not simply be left to interpretation.

What shouldn’t you ask the buyer?

Using the clarification process well is as much about knowing what not to submit.

Questions already answered in the documents

If the information is clearly available elsewhere in the pack, asking for it again adds little value. Check the full tender pack and all previously published clarifications first.

Questions that ask the buyer to write your response

Questions such as:

What would you like us to discuss in our mobilisation response?

are unlikely to help if the question, specification and evaluation criteria already explain the requirement. Interpreting the buyer’s needs and building the strongest response around them is part of the bidding process.

Questions designed to uncover competitor information

The clarification process isn’t a route for finding out:

Focus on the information you need to develop your own compliant submission.

Attempts to negotiate through a clarification question

There is a difference between an unclear requirement and one you simply do not like. For example, if the tender clearly specifies a particular delivery deadline, asking whether the buyer would prefer a later date isn’t really a clarification.

That does not mean suppliers should ignore requirements that appear impossible, contradictory or disproportionate. The question should identify the issue clearly and explain what needs clarification rather than becoming a disguised request to rewrite the procurement around your preferred solution.

How to write a good clarification question

Strong tender clarification questions tend to have four characteristics.

Reference the exact requirement

Identify the document, section or question you are referring to. This saves the buyer from having to work out where the issue arose.

Explain the ambiguity briefly

Give enough context to make the problem clear, but don’t turn the clarification into an essay.

Ask one clear question

If you have three different issues, submit three questions rather than combining them into a long paragraph.

Be specific about the information you need

Compare:

Can you clarify mobilisation?

with:

ITT section 4.2 states that mobilisation must be completed within six weeks of contract award, while Schedule 3 gives an eight-week mobilisation period. Please confirm which period bidders should use when preparing their mobilisation response.

The second makes the discrepancy and required answer immediately clear.

Weak and stronger tender clarification questions

Weak question Stronger question
Can you clarify the contract volumes? Appendix 2 provides annual volumes for Sites A and B but not Site C. Please confirm the expected annual volume for Site C.
Does the word count include tables? Section 5 specifies a 1,500-word limit but does not state whether text within tables is included. Please confirm whether table content counts towards the limit.
What do you want in the mobilisation answer? Question 3 requests a 12-week mobilisation plan, while the specification requires service commencement within eight weeks. Please confirm which timescale should form the basis of the response.
Can we change the insurance requirement? Clause 7 specifies £10m professional indemnity insurance. Please confirm whether this requirement applies to bidders across all lots.

Precision makes clarifications easier for the buyer to answer and easier for your bid team to act upon.

Don’t leave clarification questions until the deadline

The clarification deadline is the latest point at which questions can usually be submitted. It doesn’t follow that it is the best time to ask them. Raising important questions earlier gives you more time to respond if the answer changes:

An answer may also reveal another issue that needs clarification.

For larger tenders, we recommend capturing potential questions during the initial review of the procurement and agreeing internally which ones need to go to the buyer. That is far more controlled than assembling a long list shortly before the clarification window closes.

What happens if your question exposes a problem with the tender?

Sometimes a supplier clarification identifies an inconsistency or omission that requires more than a simple answer.

A contracting authority may need to amend information within the tender notice or associated tender documents. Supplier clarification questions are specifically recognised as one reason why a competitive procurement might need to be modified. Depending on the significance and timing of the change, the authority may also need to reconsider the time available for suppliers to respond.

The practical lesson for bidders is straightforward: Don’t assume the tender pack you downloaded on day one will remain unchanged.

Keep track of:

If five people are working on the bid, they all need to be working from the same current information.

Keep a clarification log

A simple clarification log makes this much easier to manage.

Field Why it matters
Reference Gives each query a unique identifier
Document/section Records where the issue arose
Question Shows exactly what was submitted
Date submitted Helps track the clarification window
Buyer response Keeps the answer accessible
Bid impact Identifies which parts of the submission are affected
Owner Makes someone responsible for actioning it
Status Confirms whether the issue is resolved

Receiving an answer is not the end of the process. Someone needs to ask: what changes because of this response?

For example, confirmation of a higher service volume could affect staffing, mobilisation, pricing, subcontractors and even social value commitments. Leaving the clarification inside the procurement portal means the value of asking the question has been lost.

This is one reason clarification management forms part of Bidding’s Full Bid Management service. We review the procurement as a complete project, rather than treating questions, response writing and submission as disconnected activities.

Be careful about revealing your solution

In many public procurements, clarification information that is relevant to all participants may be shared more widely, often without identifying which supplier raised the question. That should not prevent you from resolving a genuine uncertainty, but it should influence how you phrase it.

Imagine you want to confirm projected transaction volumes.

You could ask:

Please confirm the forecast annual transaction volume bidders should use when developing their solution and price.

Or you could ask:

Our proposed automated operating model becomes significantly more efficient above 50,000 transactions per year. Can you confirm whether volumes are expected to exceed this?

Both are looking for similar information. The second tells other readers much more about your thinking. If a question is essential to compliance, delivery or pricing, ask it. Just don’t disclose more of your proposed solution than you need to.

What if the buyer doesn’t answer?

Don’t assume that no response means the buyer has accepted your interpretation.

First, check whether:

Continue to follow the formal communication route set out in the tender rather than contacting individual buyer representatives informally.

If an unresolved ambiguity materially affects compliance, delivery or price, escalate it within your own bid team. You may need to record an assumption if the tender permits this, seek appropriate specialist advice, or reconsider the risk of proceeding on a particular interpretation.

There is no universal answer because the procurement documents themselves determine much of the process.

Should you ask if the answer might help your competitors?

Sometimes, yes. Suppose the buyer has omitted the expected volume needed to build a reliable delivery model and price. Every bidder may benefit when that information is published, but proceeding without it could expose your own business to considerably greater risk.

The better question is not:

Will competitors see the answer?

It is:

Can we submit a robust and compliant bid without resolving this uncertainty?

If the answer is no, the clarification is probably worth asking.

Tender clarification checklist

Before submitting a question to the buyer, check:

  1. Have we reviewed the complete tender pack and existing clarification responses?
  2. Does this issue materially affect compliance, solution, price or delivery?
  3. Have we referenced the exact document or requirement?
  4. Is the question concise and unambiguous?
  5. Are we asking one thing at a time?
  6. Are we genuinely clarifying rather than trying to negotiate?
  7. Are we revealing unnecessary details about our solution?
  8. Have we submitted it early enough to act on the answer?
  9. Do we know which parts of the bid may need changing?
  10. Has someone been given responsibility for managing the response?

Ask better questions before you submit

Tender clarification questions are not simply an administrative part of the procurement process. Used properly, they reduce uncertainty and help your team make better decisions about compliance, delivery, commercial risk and the solution you ultimately submit.

The aim isn’t to ask as many questions as possible. It is to identify the uncertainties that matter, phrase them precisely and make sure the answers are reflected throughout the bid.

At Bidding, our Full Bid Management service includes reviewing the tender documentation, managing tactical clarification questions, coordinating subject-matter experts and developing the submission through to final review and submission. If you’ve already developed your responses but want another pair of eyes on compliance, consistency and scoring potential, our Bid Review and Comment Service can also help identify issues before the deadline.

If you’re facing a complex procurement and need additional bid capacity, Bidding can help you manage the process from initial tender review through to the final submission.

01134790803
info@biddingltd.co.uk

Bidding
The Wellsprings
Howell Croft S
Bolton
Greater Manchester
BL1 1SB

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