Three mistakes are enough to sink a technical proposal. None of the three is about your field expertise. You can know your sector inside out, have run ten comparable projects, and still be eliminated on form. That is in fact the most common outcome, and the most frustrating.
Let me show you those three mistakes the way an evaluator sees them, because your score is decided on their side of the table. The good news is that they are diagnosable before you submit. The less good news is that they are nearly invisible from your own chair.
Mistake 1: confusing a brochure with a technical proposal
A brochure says who you are. A technical proposal says how you will do the work. These are not two registers of the same document. They are two documents.
Many teams open their bid with three pages of company history, partner logos and past achievements. It is reassuring to write. It earns almost no points. The evaluator is not trying to find out whether you are an impressive firm. They are trying to find out whether you understood their problem and whether your method holds up.
A winning technical proposal answers, in order, three questions: what does the client really want, how do you intend to get there, and why is your approach the right one here. Your references are not a preamble. They are evidence, dropped in at the moment they back a specific methodological choice.
Mistake 2: transposing without translating
The second mistake kills the strongest profiles. You have won contracts in the private sector, or for another donor, and you recycle the proposal that worked. The copy-paste is tempting: the content is solid, the structure has already convinced someone.
Except an evaluation committee reads against a precise grid, specific to this contract. An argument that landed elsewhere can score zero here, simply because it was not asked for. Worse, the vocabulary of another context immediately gives away that you did not read the need of this one. Transpose your know-how, yes. Transpose your document without re-translating it into the language and logic of the target contract, never.
Translation is not cosmetic. It means reworking every section against what this committee values, and saying it in their words.
Mistake 3: the “too concise” trap
This is the sneakiest, because it disguises itself as a quality. “We kept it short, we were concise.” In the vast majority of cases, conciseness is not a choice. It is an inability to make your work legible and attractive to someone who does not know your project.
You think you have said everything because, to you, it is obvious. The evaluator only scores what is written. The implicit earns nothing. If your quality-assurance method fits in one sentence because “it goes without saying,” it is worth exactly zero on the grid. Making the implicit explicit does not pad the document. It converts your real competence into scorable points.
Diagnosis rather than blame: if you are often told you put in too little, it is not a concision problem. It is that you are not showing the reasoning behind your choices.
And the other extreme: padding for padding’s sake
The mirror of mistake 3 exists, and it deserves naming. Stacking pages, copying your whole history, inflating every section “just in case” does not address the need any better. It is precisely what pushes donors to impose page limits. An evaluator forced to read eighty pages to find your method will hold it against you, and rightly so.
The target is neither thin nor bloated. It is right-sized: each section makes explicit what must be, and no more. Over fifteen years of reading technical proposals, one seasoned consultant recalls reading only a single genuinely outstanding one. The average bar is lower than you think. Clearing it takes discipline, not genius.
What a winning proposal actually does
A technical proposal is a working method put in writing, read cold by someone you may never meet. It therefore has to stand on its own: prove you understood the need before you parade your capabilities, and make every methodological choice verifiable.
This is where a tool saves time without taking over. Coco, the AI assistant in ICOpedia, reads the terms of reference, extracts the real evaluation grid and the weighting of each section, and tells you where your points are won. It structures the response, identifies the criteria, and flags the sections where your draft stays implicit. It does not write your proposal for you: your expertise does the talking, Coco makes sure it talks to the right grid.
And before any of that, it all starts with seeing the call in time and reading its weighting, exactly as for responding to an international tender.
What to take away
The three mistakes that sink a technical proposal are mistakes of form and posture, not substance: confusing showcase with method, recycling without re-translating, believing you have said everything. They can be fixed without changing a thing about your expertise. You simply have to write for the evaluator, not for yourself.
Re-read your next proposal with one question in mind: would a reader who knows nothing about my project understand, point by point, how I am going to do the work? If the answer is yes, you have cleared the bar.
Want to know where a call’s points are won before you write the first line? Try ICOpedia free, seven days, no credit card.
