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Bid writing

Common bid writing mistakes to avoid

Published 24 March 2026 by eSourcingData

Most losing bids fail for predictable, avoidable reasons rather than a lack of capability. Knowing the common mistakes, from ignoring the evaluation criteria to breaching word limits or missing the deadline, lets you protect your marks and give a strong bid the best chance of winning.

Not answering the evaluation criteria

The most damaging mistake is writing about the topic instead of answering the scored question. Buyers award marks against published criteria and sub-questions. If you do not address them directly, an evaluator cannot give you the marks, however impressive the surrounding prose.

Fix this by mirroring the question wording in your headings and answering every sub-question in turn. Treat the marking scheme as your brief. If it is not scored, keep it short. If it is heavily weighted, that is where your best effort belongs.

Making claims without evidence

Assertions like "we are experienced, reliable and customer-focused" carry little weight because they cannot be verified. Unsupported claims are a classic reason for mediocre scores. Evaluators reward proof, not adjectives.

Replace claims with evidence: comparable contracts, measurable outcomes, accreditations and short case examples relevant to the requirement. If you find yourself describing how good you are, stop and show it instead with a specific, verifiable example.

Ignoring word and page limits

Exceeding a stated limit is a common and costly error. Depending on the rules, content over the limit may simply not be read, or the whole answer may be marked non-compliant. Either way you lose control of which of your points get scored.

Plan answers to fit the limit from the start rather than writing long and cutting later. Tight, well-structured responses often score better anyway, because they force you to lead with your strongest, most relevant points.

Recycling generic content

Reusing content is efficient, but pasting old answers without tailoring them to the current specification is a frequent failure. A recycled answer that references the wrong contract, scope or buyer signals a lack of care and misses the specific question.

Use previous content as a starting point, then rewrite it around this tender's criteria, scope and location. Evaluators can tell a tailored response from a template, and they mark accordingly.

Leaving compliance and submission to the end

Strong bids are regularly lost on process: a missing document, an incomplete mandatory field, an unmet minimum standard or a late upload. These have nothing to do with the quality of your writing but everything to do with whether you win.

Keep a compliance checklist from day one and confirm every requirement before you submit. Treat the portal deadline as final, upload early and allow time for large files and technical issues. Late submissions are almost never accepted.

Catch the mistakes before the evaluator does

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Frequently asked questions

What is the most common bid writing mistake?

Not answering the published evaluation criteria. Writing about the topic in general terms while leaving scored sub-questions unaddressed is the single biggest cause of lost marks.

Why do compliant bids still lose?

They often lose because claims are not evidenced, answers are generic, or the strongest points are buried. Being compliant gets you assessed, but high scores come from direct, evidenced answers.

Does going over the word limit really matter?

Yes. Content beyond the limit may not be read, and in some cases the whole answer is marked non-compliant, so you lose control over which points are scored.

How do I avoid non-compliance?

Maintain a compliance checklist from the outset, confirm every mandatory field and document, meet all minimum standards, and submit well before the deadline through the portal.

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AI bid writing software How to write a winning tender response Tender bid writing checklist How to improve your bid win rate Free UK tender search Bid writing software

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