To calculate a catering price from a target margin, divide your planned event cost by one minus your target margin. For example, a job costing $350 needs a $500 pre-tax selling price to leave a 30% margin on those entered costs: $350 ÷ (1 − 0.30) = $500.
The formula is simple. The useful work comes before it: making sure your cost estimate includes the time, supplies, and delivery needed to complete the event.
Want to follow this example in a workbook? The Small-Caterer Quote-to-Prep Kit ($19 USD) brings linked ingredient quantities, whole-pack purchasing calculations and a manual prep plan together. It includes a native Google Sheets template link, a seven-tab XLSX fallback, Read First instructions and two PDFs; review the product page for software compatibility and limitations before buying.
Mad Forthren is run by Matthew Donlon, whose background includes 10 years in food service and 3 years as an Executive Chef.
Start with the whole event cost
For a small drop-off catering job, build your estimate from separate lines:
- Food ingredients, using current supplier prices and quantities in matching purchase units
- Prep labor, including your own time
- Packing, service, and delivery labor where those activities apply
- Packaging and disposables
- Vehicle or delivery expenses, separate from delivery labor
- Rentals and other event expenses
- An allowance for relevant overhead and uncertainty
Include payroll-related costs in your labor rates where appropriate. Keep vehicle costs separate from paid driving time so you can see both without counting either twice.
If you expect to spend four hours preparing and one and a half hours packing and delivering, record all five and a half hours. Whether you do the work yourself or pay someone else, leaving it out makes the estimate less useful.
Margin and markup use different starting points
A margin is the amount left after the costs you included, divided by the selling price. A markup is that same amount divided by cost.
Using a fictional $350 event cost:
- A 30% markup gives a $455 selling price: $350 × 1.30
- That leaves $105 after entered costs
- The resulting margin is about 23.08%: $105 ÷ $455
- To target a 30% margin, calculate $350 ÷ 0.70 = $500
At $500, the $150 remaining is 30% of the selling price. The equivalent markup on cost is about 42.86%.
The 30% figure is an arithmetic example, not a recommended margin for every catering business. Your price also needs to fit your service, capacity, customers, and actual operating costs.
Include labor before applying the margin formula
Suppose your ingredients, packaging, and delivery expenses add up to $250, and your event labor adds another $100. Your planned cost is $350.
If you apply the margin formula to the $250 alone, the calculation cannot account for the missing $100 of labor. Add the labor first, then calculate the price from the complete cost estimate.
Also distinguish a planning margin from net profit. The amount left after entered event costs may still need to cover overhead you did not allocate to the job, payment fees, and other business expenses. A calculated margin does not guarantee a profitable event.
A fictional example: changing 50 guests to 80
The sample in the Small-Caterer Quote-to-Prep Kit uses fictional ingredient prices and a 30% target contribution margin. At 50 guests, its planned event cost is approximately $346.62 and its calculated pre-tax quote is $495.18. The workbook retains the unrounded cost in the formula and rounds the quote upward to the next cent.
Changing only the sample guest count to 80 increases the calculated pre-tax quote to $633.43.
There is an important limit to that comparison: the sample still contains $121 of labor, $37.50 of packaging, and $18 of vehicle or delivery expense. Those are manually entered costs. They do not automatically increase with the guest count.
For a real 80-person job, review the labor hours, packaging, delivery needs, equipment, and capacity before using the result. The comparison demonstrates how the linked ingredient quantities affect the estimate. It is not a suggested selling price, a real customer result, or evidence that 80 guests can be served with the same staffing as 50.
Check purchasing cash separately
Required ingredient quantity and the amount you must purchase can differ. If you need 6 kilograms and your supplier sells 5-kilogram bags, you may need two bags unless usable stock covers part of the requirement.
The kit's Shopping tab helps calculate whole packs after you enter the pack size and usable stock on hand. Its planned ingredient cost uses required quantities; it does not automatically replace that cost with the cash needed for whole-pack purchases. Review that purchasing cash separately before committing to the job.
Keep units consistent. A price per kilogram needs a quantity in kilograms. Account for recipe yield and trim loss in your own inputs; the workbook does not calculate those allowances or convert units for you.
Review the estimate before sending a customer quote
Before you agree a price, check:
- The guest count, menu, and service scope are current
- Ingredient quantities and unit prices match
- Labor includes prep, packing, delivery, and other work the event needs
- Packaging, rentals, delivery expenses, and relevant overhead are included
- The target margin is entered as a margin, not a markup
- Purchasing cash, capacity, and contingency have been reviewed
- Applicable tax treatment has been checked separately
Keep an untouched master and save a separate working file for each event. Review the internal estimate, then prepare your customer-facing quote with your own scope, payment terms, and cancellation terms.
Put the numbers and working lists in one place
The Small-Caterer Quote-to-Prep Kit is a $19 USD one-time digital purchase from Mad Forthren. It includes a native Google Sheets template link and a seven-tab XLSX fallback for internal event costing, ingredient quantities, shopping, and a manually completed prep checklist, plus Read First instructions, a PDF quick-start guide and printable event run sheet.
Review the product page for software testing details, limitations, and license terms before purchasing. The workbook is an internal planning tool; the prep checklist is manual, and it does not provide food-safety, allergen, or regulatory compliance guidance.