How to build a board pack with AI that survives board questions
A board pack fails in the room, not on the page. The slide looked fine until someone asked why gross margin moved and nobody had the bridge. AI is useful here less for writing slides and more for finding the questions before the board does.
What board questions actually test
Most board questions fall into four groups. A pack that survives has an answer ready for each:
- "What moved?" Revenue, margin or cash changed versus budget or last quarter. They want the drivers, in order of size.
- "Is this real?" A number looks better than expected. They want to know if it's timing, one-off, or a trend.
- "Why doesn't this match?" ARR on page 4 differs from revenue on page 9, or from last quarter's pack. This one does the most damage to credibility.
- "What happens next?" Forecast, risks, and what management is doing about them.
AI helps with all four, but only if it works from the same numbers your close produced. A model writing from a stale export is how the third question gets asked.
The pages AI should draft
1. The revenue bridge
Prior period revenue to current period revenue, split into the movements that matter for your business: new customers, expansion, price, volume, churn, FX, one-offs. Give the model the customer-level revenue for both periods and a written rule for how each movement is classified ("a customer with zero revenue in the prior period is new"). It produces the bridge table, the chart data and two sentences on the largest movements. The classification rule is what makes the bridge repeatable quarter to quarter.
2. KPI pages
Each KPI gets the current value, the comparison, the trend, and one line on why it moved. Use the same definitions as every other report (see the number book guide). Keep the page count fixed from quarter to quarter: boards notice when a metric quietly disappears.
3. Commentary
The model writes the first draft of each section in your house voice: lead with the conclusion, put numbers before adjectives, no "robust" or "strong momentum". The CFO rewrites the parts that carry judgement, which is usually the outlook and the risks.
The challenger pass
The builder never grades their own work. Once the draft is done, a separate AI reviewer reads it cold, playing the people who'll use it: a board member, the COO, an analyst checking the arithmetic. Each scores the pack and lists what they'd ask.
A useful challenger prompt asks for three lists:
- Questions the pack invites, ranked by how likely they are to be asked.
- Claims without support: any sentence that states a cause ("driven by the new pricing") without a number behind it.
- Apparent inconsistencies: figures that look like they should match and don't, even if there's a valid reason.
A typical pass on a 20-page pack returns 15 to 30 questions. Most take a minute to answer. Three or four usually lead to a changed slide.
In-room notes
The output of the challenger pass becomes a short document the CFO takes into the meeting: one line per likely question, the answer, and the supporting number with where it came from. It looks like this:
| Likely question | Answer | Support |
|---|---|---|
| Why is gross margin down 1.8 pts? | Two-thirds mix (lower-margin services grew faster), one-third higher input costs | Margin bridge, rows 4–9; cost of sales GL detail |
| Is the Q3 bookings jump one-off? | One multi-year deal is 40% of the jump; excluding it, growth is in line with plan | Bookings by deal, top 10 |
| Why does ARR not match revenue growth? | Two large contracts signed late in the quarter; revenue starts next quarter | ARR roll-forward vs revenue schedule |
These notes are draft-never-send: they're for the CFO, not circulated. The CFO decides what to say.
Tie-out to the close
Before the pack goes to anyone, an automatic check compares every figure on every slide with its source:
- Revenue on the bridge equals revenue in the closed P&L.
- Cash on the KPI page equals the reconciled bank balance.
- Headcount equals payroll; ARR rolls forward from last quarter's pack.
- Every number this pack repeats from the last pack is either unchanged or flagged as restated.
Every figure should also open its source: click it and see the rows behind it and when they were read. If a number can't do that, it doesn't go on a slide. A break blocks the pack until someone explains it.
Common mistakes
- Starting from last quarter's deck. Copying the old file and updating numbers is how stale figures survive. Regenerate the data pages from the closed numbers every time.
- Letting the builder review its own work. The same model that wrote the commentary will find it convincing. Use a separate reviewer with a different brief.
- Writing a bridge with an "Other" bar that's 30% of the movement. That bar is the first question. Keep "other" under about 10% or split it.
- Polishing slides before tie-out. Formatting a page whose number is about to change is wasted time. Tie out first, then apply the house style.
FAQ
Can AI write the board pack commentary?
It can write the first draft, and it is good at it when it works from the closed numbers and your materiality thresholds. The CFO still owns the message. Treat the draft as an analyst's first pass: check every figure against its source, then rewrite the parts that carry judgement.
How do I stop numbers in the board pack disagreeing with the management accounts?
Build the pack from the same metric definitions the close uses, and run automatic tie-outs before anyone sees a draft: revenue on the bridge to revenue in the P&L, cash on the KPI page to the bank reconciliation, headcount to payroll. Any break blocks the pack until it is explained.
What is a challenger pass?
A separate AI review that reads the finished draft as a sceptical board member would. It lists the questions the pack invites, flags claims that lack support, and spots numbers that look inconsistent. The person who built the pack answers those questions before the meeting, not in it.
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