By Heidi Macomber · July 9, 2026 (updated July 28, 2026)
How to Cost Out a Catering Job: A Calculator-Style Walkthrough
Catering food costs should run 25-30% of your contract price, but most caterers don't know their real number because catering math is harder than restaurant math. You're buying for 200 people, not one plate. Servings vary. Buffet waste is unpredictable. Here's how to calculate catering food costs accurately for every job you quote.
Why Catering Food Cost Is Different
In a restaurant or food truck, you cost out individual plates and multiply by orders sold. Catering works in reverse: you're quoting a total price for a group before you've cooked anything, which means you need to know your per-person food cost before you can set the price.
The formula is the same, but the scale changes everything:
Catering Food Cost Percentage = (Total Ingredient Cost for the Event / Total Contract Price) x 100
Step-by-Step: Costing a 100-Person Catering Job
Let's walk through a real example: a wedding buffet for 100 guests, chicken and beef options, two sides, salad, and rolls.
1. Build Your Recipes for the Headcount
For each menu item, calculate the total ingredient cost at the serving quantity you need:
| Menu Item | Per-Person Cost | x 100 Guests | Subtotal |
|---|---|---|---|
| Grilled chicken (6 oz portion) | $2.40 | 100 | $240.00 |
| Sliced beef (5 oz portion) | $3.50 | 100 | $350.00 |
| Mixed green salad | $0.75 | 100 | $75.00 |
| Roasted potatoes | $0.60 | 100 | $60.00 |
| Green beans | $0.50 | 100 | $50.00 |
| Dinner rolls (2 per person) | $0.30 | 100 | $30.00 |
| Butter | $0.05 | 100 | $5.00 |
| Total food cost | $810.00 |
Per-person food cost: $810 / 100 = $8.10 per guest
2. Add a Buffer for Buffet Waste and Overages
Buffet service means people take more than a standard portion. Industry standard is to add 5-10% for buffet overage:
$810 x 1.08 (8% buffer) = $875 total food cost
Per-person adjusted cost: $8.75
3. Calculate Your Quote Using Target Food Cost Percentage
Most caterers target 25-30% food cost. Let's use 28%:
Contract Price = Total Food Cost / Target Food Cost Percentage
$875 / 0.28 = $3,125
Per-person price: $3,125 / 100 = $31.25 per guest
4. Sanity-Check Against Market Rates
Before sending the quote, compare to what other caterers in your area charge. If $31.25 per person for a two-protein buffet is below your local market, you can raise the price: which lowers your food cost percentage and increases margin.
If $31.25 is above market, you either need to negotiate lower ingredient costs, adjust the menu (drop beef, add pasta), or accept a higher food cost percentage for this job.
Catering Food Cost Benchmarks by Event Type
| Event Type | Target Food Cost % | Notes |
|---|---|---|
| Wedding (plated) | 25-28% | Higher quality, precise portions |
| Wedding (buffet) | 28-32% | More waste, larger portions |
| Corporate lunch | 25-30% | Standardized menus, less waste |
| Drop-off catering | 22-27% | No service staff, lower overhead |
| BBQ / casual | 30-35% | Expensive proteins, casual portions |
The Hidden Costs Caterers Forget
Disposable serviceware. Plates, forks, cups, serving utensils, chafing dishes (if renting). Budget $1.50-3.00 per person.
Garnishes and presentation. Lemon wedges, parsley, sauce drizzles. Small per serving, significant across 100+ plates.
Staff meal. Your team needs to eat. Factor in 3-5 servings at your own food cost.
Leftovers. If you prepare for 100 and only 90 show up, you've overcooked. Track actual vs. expected attendance to improve future estimates.
Gas and equipment wear. Not a food cost, but it eats into the margin if you don't account for it in your overall pricing.
Track Every Job to Improve Over Time
The most profitable caterers track food cost percentage on every event and compare to their benchmark. Over time, they learn which event types, venues, and menu items are most profitable: and they stop quoting the ones that lose money.
This is where a food cost calculator pays for itself. Instead of rebuilding spreadsheets for every quote, you maintain your ingredient prices, build reusable recipes, and scale them to any headcount instantly.
Percy Plate lets you store recipes, scale them to any serving count, and see per-person food costs and target pricing in seconds. Free to start: cost your next catering job before you quote it.
Related Guides
- Recipe Costing 101: How to Cost Out Any Recipe for Profit — Foundation recipe costing skills
- Plate Costing: How to Cost a Plate Down to the Cent (Without Losing Your Mind) — Per-serving costing method
- How to Cost a Plate of Food: The Complete Guide — Complete plate costing walk-through
- Cost Per Portion: The Formula Every Food Business Needs (With Examples) — Per-person portion cost math
Stop guessing what your dishes cost.
Percy Plate calculates recipe costs, menu prices, and FDA-compliant labels for food businesses. Free to start.
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