Your catering headcount is the number of meals you guarantee to the venue, and you pay for that number even if fewer people show up. The mistake most planners make is guaranteeing registrations instead of eaters. Registrations tell you who might come; the guarantee should reflect who will actually be in the room for each specific meal. Here's how to set that number, what each plate really costs, and how your check-in data makes every guarantee more accurate.
What is a catering guarantee?
A catering guarantee is the final number of guests you commit to for each meal function. The venue bills you for the guarantee or the actual count, whichever is higher. Guarantee 500 and serve 430, you pay for 500. Guarantee 430 and serve 500, you pay for 500, as long as the kitchen can feed them.
Three numbers work together here, and it helps to keep them separate:
- Guarantee: The count you commit to and pay for at minimum. It's set per meal, not per event.
- Overset: The extra plates the venue prepares above your guarantee, commonly 3 to 5 percent, so late arrivals don't go hungry. You're usually only billed for oversets that get served.
- F&B minimum: The total catering spend you agreed to in the contract. If your guarantees add up to less, you pay the difference anyway. Our guide to hotel and venue contracts covers how to negotiate that number before you sign.
Don't pad on top of the overset. The venue's overset already covers a few extra people. Adding your own 10 percent cushion on top of it means you pay for plates twice over and serve neither.
When is the final catering headcount due?
Most venues want your final guarantee 72 hours before the meal, often stated as three business days. Weekends matter: a Monday lunch guarantee is frequently due the Wednesday or Thursday before. Check the banquet event orders (BEOs) for each function, since the deadline can differ between a hotel's banquet team and an outside caterer.
| When | What you send |
|---|---|
| Contract signing | F&B minimum and service charge terms, in writing |
| 30 days out | Menu selections and the dietary categories you'll need |
| 7 to 10 days out | Preliminary counts per meal function |
| 72 hours out | Final guarantee per meal, including special meal counts |
| Day of | Door counts, so you can reconcile the invoice |
After the deadline, most venues will let you increase a guarantee (subject to availability, and sometimes at a surcharge) but won't let you lower it. That asymmetry is the whole game: guarantee low enough to avoid paying for empty seats, and high enough that the overset covers the rest.
How do you calculate catering headcount?
Work it out meal by meal in three steps.
- Start with expected on-site attendance, not registrations. Multiply registrations by your historical show rate. Paid events usually hold attendance far better than free ones, so use your own past check-in data wherever you have it.
- Apply a show rate for each meal. Not everyone on site eats every meal. First-morning breakfast, evening receptions, and last-day meals typically draw smaller crowds than a day-one lunch.
- Add everyone who eats but didn't register. Staff, volunteers, speakers, A/V crew, and exhibitors often eat from the same buffet. Leave them out and the kitchen runs short.
Worked example: a two-day conference with 600 registrations
Say your past events show 90 percent of registrants check in, so you expect 540 attendees on site. Add 30 staff, speakers, and crew who eat with attendees. The meal show rates below are example planning assumptions; swap in your own numbers from past events.
| Meal function | Show rate | Attendees | Plus staff | Guarantee |
|---|---|---|---|---|
| Day 1 breakfast | 70% | 378 | 30 | 408 |
| Day 1 lunch | 95% | 513 | 30 | 543 |
| Day 1 reception | 65% | 351 | 30 | 381 |
| Day 2 breakfast | 60% | 324 | 30 | 354 |
| Day 2 lunch | 80% | 432 | 30 | 462 |
Guaranteeing 600 for every meal would have meant paying for 852 unserved plates across the two days. Even at the day-one lunch, the best-attended function, a flat 600 would overpay by 57 plates.
How much does catering cost per person?
The menu price is not the price. A service charge (commonly 22 to 26 percent) sits on top of every catering line, and in many states tax applies to the service charge as well as the food. Here's how a $58 buffet lunch actually lands:
| Line | Per person |
|---|---|
| Menu price | $58.00 |
| Service charge at 24% | $13.92 |
| Subtotal | $71.92 |
| Tax at 9% on the subtotal | $6.47 |
| True F&B per person | $78.39 |
That's about 35 percent above the menu price. Multiply it by the guarantee and every unneeded plate gets expensive fast: 50 extra guaranteed lunches at $78.39 is $3,920 for food nobody eats. Use the fully loaded per-person figure, not the menu price, in your event budget.
Ask what the service charge covers. A service charge isn't always a gratuity for staff, and it isn't always counted toward your F&B minimum. Get both answers in writing before you compare venues on menu price.
How to handle dietary restrictions in your count
Special meals are part of the guarantee, not an afterthought. Venues typically want counts for vegetarian, vegan, gluten-free, and allergy-specific plates with the final numbers.
- Collect it at registration: A required dietary field with fixed options gives you clean counts. Free-text answers ("no weird stuff") don't. Our guide to event registration forms covers how to structure it.
- Apply the same show rate: If 8 percent of registrants are vegetarian, plan for about 8 percent of each meal's guarantee, not 8 percent of total registrations.
- Keep a small vegetarian buffer: Attendees who didn't flag a restriction often choose the vegetarian plate on the day. A handful of extras prevents shortages for the people who actually need them.
- Confirm serious allergies directly: For severe allergies, confirm with the chef and tell the attendee where their plate will be. Don't rely on a buffet label.
Use check-in data and badges to count who actually eats
Your registration list is a forecast. Your check-in count is a fact, and for multi-day events it arrives before most of your later guarantees are due.
- Re-forecast from day-one check-in: If 85 percent check in on day one instead of the 90 percent you planned, lower the day-two guarantees before their deadlines. Our conference check-in guide covers how to get that count fast and clean.
- Print meal entitlements on the badge: When some attendees have a ticketed dinner or an all-access package, a printed icon or color band on the badge lets door staff check eligibility at a glance instead of checking a list.
- Use the back of the badge: A double-sided badge can carry the meal schedule, room locations, and any meal tickets, so attendees stop asking where lunch is.
- Scan badges at the door: A QR code scanned at meal entrances gives you real per-meal show rates. That's the data that makes next year's guarantees accurate.
- Badge your staff differently: Distinct staff and volunteer badges make it easy to count staff meals separately and spot who's eating from the attendee buffet.
If you add a dietary marker to badges, keep it small, put it on the back, and only print it for attendees who opt in. It helps servers deliver plated special meals to the right seat without announcing anyone's needs to the table.
Multi-day events: set guarantees one day at a time
On a multi-day program, each day's guarantee is a new decision. Attendance drops across most conferences as the program goes on, and the last afternoon is usually the lightest. Ask the venue whether day-two and day-three guarantees can be finalized on a rolling basis, then use each day's actual counts to set the next. Our guide to multi-day conference planning covers the rest of the daily run-of-show.
Guarantee the people who will actually eat, not the names on your list, and your final catering invoice will finally match the room.
Frequently asked questions
What is a catering guarantee?
A catering guarantee is the final number of guests you commit to for a meal function. The venue bills you for the guarantee or the actual number served, whichever is higher, so guaranteeing too many means paying for empty seats. Guarantees are set per meal, not once for the whole event.
When is the final catering headcount due?
Most venues require the final guarantee 72 hours, or three business days, before each meal. After that deadline you can usually increase the count, subject to availability, but not lower it. Check each banquet event order, since deadlines can vary by function and by caterer.
How do you estimate how many attendees will eat at an event?
Multiply registrations by your historical check-in rate to get expected on-site attendance, then apply a show rate for each meal, since breakfasts, receptions, and last-day meals draw fewer people than a day-one lunch. Finally, add staff, speakers, volunteers, and crew who eat from the same service.
What happens if fewer people show up than the catering guarantee?
You pay for the full guarantee. That's why the guarantee should be based on expected attendance at each meal rather than total registrations. The venue's overset, typically 3 to 5 percent above the guarantee, covers a few extra guests if more people show up than expected.
How much does event catering cost per person?
Start with the menu price, then add the service charge, commonly 22 to 26 percent, and tax, which in many states also applies to the service charge. Together they typically add about a third to the menu price. Always budget with the fully loaded per-person figure.
Should staff and volunteers be included in the catering count?
Yes, if they eat from the same service as attendees. Staff, volunteers, speakers, A/V crew, and exhibitors are easy to forget because they don't appear in registration numbers. Add them to each meal's guarantee, or arrange a separate staff meal with its own count.