Final guarantee.
The final guarantee is the guest count a client confirms in writing before a set deadline — usually 72 hours before the event — and it becomes the number the event is billed and prepared against, even if fewer guests actually show up.
Also called the confirmed count or guarantee number, it is the moment a soft estimate becomes a hard commitment. Once the guarantee is locked, the kitchen orders food, the floor is staffed and the invoice is calculated against it.
How the final guarantee works
Throughout planning the event carries a working headcount — an estimate that moves as RSVPs come in. The contract names a cut-off, typically 72 hours (three business days) before the event, when the client must confirm a final number. That confirmed figure is the guarantee. From that point the venue treats it as the floor: the client pays for at least that many covers regardless of no-shows, because the food has already been purchased and prepped and the staff already scheduled.
Kitchens rarely cook exactly to the guarantee. Standard practice is to prepare for the guarantee plus a small over-set — commonly around 5%, or a fixed number of extra covers — so a handful of unexpected arrivals can still be seated and served. If more guests turn up than were guaranteed, the client is billed for the higher actual count, not the guarantee. The guarantee protects the venue on the downside; the actual count protects it on the upside.
Common mistakes
The most frequent error is treating the guarantee as a live estimate that can keep dropping after the deadline. It cannot — once passed, the number is billable. A second is failing to capture the guarantee in writing, which turns a billing dispute into one person's word against another's. A third is forgetting to push the guaranteed figure through to the kitchen prep list and the BEO, so service is set for one number while billing runs on another. Keeping the guarantee on a single event record — where the count, the deadline and the invoice all read from the same field — removes all three.
Final guarantee vs headcount
| Headcount | Final guarantee | |
|---|---|---|
| What it is | The working estimate during planning | The locked, written count before the deadline |
| Can it change? | Yes — moves with RSVPs | No — fixed once the deadline passes |
| Used for | Rough quoting and planning | Billing, food ordering and staffing |
Related terms
- Full banquet & catering glossary
- Server ratio — how the guaranteed count drives staffing
- On-premise catering — where the guarantee is billed with room and F&B
- Banquet captain — who runs the floor against the guaranteed number
- What is a BEO? — the sheet the guarantee is printed on
Lock the count, bill it right.
Capture the final guarantee once and let the BEO, prep list and invoice all read from the same number. Try it free for 14 days, no credit card to start.