Which format do I need?
Summary vs abstract vs executive summary
Three short pieces that all sit at the front of a longer document — and do three different jobs.
Intermediate Assumes you can already draft and revise a piece.
All three compress a long document into a short one, so they get used interchangeably. They should not be. The test is what the reader does next. A summary reader is going to read the whole thing. An abstract reader is deciding whether to. An executive-summary reader is not going to read it at all, and has to be able to act anyway.
Side by side
| Summary | Abstract | Executive summary | |
|---|---|---|---|
| In one line | A condensed account of what a text says. | A standalone miniature of a piece of research. | The decision, the reasoning and the ask — for someone who will read nothing else. |
| Typical length | 5–10% of the original | 150–300 words, hard limit set by the journal or conference | One page, or under 10% of the report |
| Who reads it | Someone who will also read the full text, or who wants the content without the detail | A researcher deciding whether this paper is relevant to them, often reading only this | A decision-maker with no time and the authority to say yes or no |
| Voice | Neutral and faithful. Your opinion does not appear. | Impersonal, precise, past tense for what was done. | Direct and confident. Recommendations stated, not hinted at. |
| Shape | Follows the original's order. Main points only, no examples. | Background, aim, method, results, conclusion — often one or two sentences each. | The situation, what you found, what you recommend, what it costs, what happens next. |
| Use it when | Study notes, a précis exercise, the opening of a book review, briefing a colleague. | Any journal article, thesis, conference submission or dissertation. | Business reports, consultancy work, board papers, funding proposals, policy briefs. |
Summary
A condensed account of what a text says.
Typical length: 5–10% of the original
Who reads it: Someone who will also read the full text, or who wants the content without the detail
Voice: Neutral and faithful. Your opinion does not appear.
Shape: Follows the original's order. Main points only, no examples.
Use it when: Study notes, a précis exercise, the opening of a book review, briefing a colleague.
Abstract
A standalone miniature of a piece of research.
Typical length: 150–300 words, hard limit set by the journal or conference
Who reads it: A researcher deciding whether this paper is relevant to them, often reading only this
Voice: Impersonal, precise, past tense for what was done.
Shape: Background, aim, method, results, conclusion — often one or two sentences each.
Use it when: Any journal article, thesis, conference submission or dissertation.
Executive summary
The decision, the reasoning and the ask — for someone who will read nothing else.
Typical length: One page, or under 10% of the report
Who reads it: A decision-maker with no time and the authority to say yes or no
Voice: Direct and confident. Recommendations stated, not hinted at.
Shape: The situation, what you found, what you recommend, what it costs, what happens next.
Use it when: Business reports, consultancy work, board papers, funding proposals, policy briefs.
Decide quickly
Which one do you actually need?
- The reader will read the full document too → summary.
- The reader is deciding whether the document is relevant → abstract.
- The reader will never read the document but must still decide → executive summary.
- You must not include conclusions the document doesn't reach → summary or abstract.
- You must lead with a recommendation → executive summary.
- There is a word limit enforced by a submission system → abstract.
Common confusions
The questions that come up every time.
Can I write the abstract first?
You can draft it first to force clarity, but write the real one last. An abstract promises results. Until the results exist, you are writing fiction, and reviewers notice when the abstract and the findings disagree.
Is an executive summary just a long abstract?
No — the direction is opposite. An abstract is deliberately neutral and lets the reader judge. An executive summary exists to get a decision made and must say what you want to happen. A neutral executive summary has failed.
Does the executive summary repeat the report?
Yes, and that is correct. It is not a teaser and it should not withhold the finding to keep the reader going. It has to work completely alone, because for most of your readers it will be the whole document.
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