The consulting deck exists to move a reader from one belief to another. Its architecture is three parts, each sized against a different constraint.
What are the three parts of a consulting deck?
The executive summary is one page. It carries the governing thought and the small number of claims that support it. It must work as a standalone artefact, because a meaningful share of readers will read it and nothing else. Its size isn't a matter of taste. One page, because two pages means there's no governing thought yet.
The body is a chain of action-title pages, one claim a page, in an order where reading the titles alone reproduces the argument. Its length is set by the meeting, and the analysis gets no say. A thirty-minute presenting window at a three-minute floor a page carries ten pages. Of those, the title, the executive summary and the next-steps page take three, which leaves about seven pages to argue with in the room.
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The India body below runs to nine, because the version that gets forwarded carries claims the room itself won't stop on. Six of those nine survive into the presented cut. Nine claims in a body is already generous. If the argument needs fourteen, either the meeting is longer or five of them aren't carrying any weight.
The appendix is everything else, indexed. It's the part of the deck that lets the body be short, because a claim you can defend on demand doesn't need its defence printed in the body. See it that way and it stops looking like a graveyard or a pile of padding. In the India deck built below, the appendix carries 8 of the 14 exhibits over 11 exhibit pages. With its divider it runs to 12 pages, or 48.00% of a 25-page document.
Keep those proportions in your head as a sanity check. They aren't a rule. A deck that's 90% body has dodged every decision about what goes to the appendix, and it'll be interrupted. A deck that's 90% appendix has no argument. It's a data room with a cover page.
Worked example: a 25-page deck plan
Here's the India deck's page plan. Every worked example in the module refers back to it.
| Section | Pages | What lives here |
|---|---|---|
| Title | 1 | Client, subject, date, version, confidentiality mark |
| Executive summary | 1 | Governing thought, three key lines, the ask |
| Context and scope | 1 | What was asked, what was excluded, what data was used |
| Body | 9 | Nine action titles, one claim each, six carrying exhibits |
| Next steps | 1 | Actions with owners and dates |
| Appendix divider and index | 1 | The map that makes the appendix usable |
| Appendix exhibits | 11 | 8 exhibits plus method, data definitions and sensitivity |
| Total | 25 |
The front section is 13 pages and the appendix is 12. At 30 presenting minutes the whole document averages 1.2000 minutes a page. That's 72.00 seconds, and nobody can do it. The front section alone averages 2.3077 minutes. The nine-page presented cut averages 3.3333 minutes, which is a pace you can actually hold. Those three numbers are why you cut a deck into parts and don't just shorten the whole thing evenly.