FY2026 EBITDA fell from $452K in Prior to $303K in Current, a change of ($149K), or (32.9%). The script's check passed: the six driver deltas sum exactly to the EBITDA change.

| Step | Amount |
| --- | --- |
| Prior EBITDA | $452K |
| Active customers | ($133K) |
| Revenue per customer | $0 |
| Gross margin | $39K |
| Headcount | ($54K) |
| Cost per head | $0 |
| Other opex | $0 |
| Current EBITDA | $303K |

- **Active customers:** this carries the move. The forecast drops from 46 to 44 in all 12 months, which cuts revenue by ($509K).
- **Gross margin:** it offsets part of the decline, rising from 26.2% to 26.6% in all 12 months for $39K.
- **Headcount:** it adds cost, rising from 23.00 to 23.75 FTE in 9 months, for ($54K).
- **Unchanged:** revenue per customer, cost per head and other opex.

The data shows how much each driver moved EBITDA but not why. The note asks the owner of each changed driver which documented assumption supports the change.

The note and the script output are in `output/drivers-note.md` and `output/drivers.json`. The input was `data/drivers_fy2026.csv`, 144 rows.