How do you price special dietary requests without killing your catering margins? Gluten-free, vegan, and allergen-free meals demand pricier ingredients and extra prep time. You can't absorb these costs and stay profitable.
Why special diets cost more
Dietary requests aren't just swapping one ingredient for another. They demand:
- Pricier ingredients (gluten-free bread costs 3x regular bread)
- Additional prep time (separate cutting boards, dedicated pans)
- Risk management (avoiding cross-contamination)
- Small-batch purchasing (specialty items for fewer guests)
Skip passing these costs along, and those guests become profit killers.
💡 Example:
Catering for 50 people, 3 need gluten-free:
- Standard main courses: €12 per person
- Gluten-free version: €18 per person
- Extra chef time: 1 hour at €25
Additional cost: 3 × €6 + €25 = €43 extra
Calculate the extra costs per diet
Each dietary restriction has unique cost drivers:
Gluten-free
- Ingredients: 200-300% price increase
- Separate prep: +30 minutes per 10 people
- Cross-contamination prevention: extended cleaning
Vegan
- Ingredients: 50-150% higher (plant-based substitutes)
- More vegetables/nuts for protein needs
- Dedicated cookware to avoid dairy contact
Allergen-free
- Completely isolated prep area
- Intensive ingredient verification
- Liability risk premium (insurance factor)
⚠️ Note:
Allergen-free catering carries liability exposure. Build a safety buffer into your pricing (10-20% extra margin).
Set minimum order quantities
Special diets don't work financially for 1-2 people. Establish minimums:
- Gluten-free: minimum 5 people
- Vegan: minimum 3 people
- Specific allergens: minimum 5 people
Below these thresholds: flat surcharge of €50-75 per dietary restriction.
💡 Example calculation:
Event 80 people, 2 gluten-free:
- Standard catering: 78 × €15 = €1,170
- Gluten-free surcharge: €75 (below minimum)
- Gluten-free meals: 2 × €22 = €44
Total: €1,289 (instead of €1,200)
Communicate clearly in your quote
Make extra costs transparent from the start:
- Base price per person
- Surcharge per dietary restriction
- Minimum order requirements
- Deadline for dietary requests (e.g., 5 days advance notice)
Transparency prevents arguments later and helps customers make informed decisions.
Registration for HACCP and liability
Allergen-free catering brings extra accountability. Document:
- Which allergens are excluded per dish
- Separate preparation procedures
- Ingredients used and supplier details
- Cleaning protocols between preparations
From tracking this across dozens of restaurants, proper documentation saves you during health inspections and potential liability claims. Tools like food cost calculators help document allergen-free recipes and HACCP records for catering events.
💡 Practical tip:
Create standardized diet packages: 'Gluten-free menu A', 'Vegan menu B'. You won't need to recalculate every time and can purchase more efficiently.
How do you calculate diet surcharges? (step by step)
Calculate the extra ingredient costs
Compare the costs of regular vs. specialty ingredients. Gluten-free bread costs €8/kg vs. €2.50/kg regular. Work out the difference per portion.
Add extra labor time
Estimate how much extra time the separate preparation takes. Multiply by your kitchen hourly rate (usually €20-25/hour).
Add risk surcharge
For allergens: add 15-20% extra margin for liability risk and extra care. This isn't a luxury but a necessity.
✨ Pro tip
Track your dietary restriction costs over 30 days to build accurate pricing templates. You'll quote 40% faster and avoid underpricing these high-maintenance requests.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Can't I just charge the same price for all guests?
No, you'll hemorrhage money on special diets. Gluten-free ingredients cost 2-3x as much and demand extra prep time. Always calculate these costs through to your pricing.
What if the customer gives dietary requests at the last minute?
Set a firm deadline of at least 5 days before the event. After that: 50% surcharge on diet costs due to rush purchasing and added stress.
Do I need to be able to exclude all 14 allergens?
Focus on the most common ones: gluten, lactose, nuts. For rare allergens, you can refer clients to a specialist caterer.
How do I prevent cross-contamination in catering?
Prepare special diets first, use dedicated cutting boards and knives, then package immediately after prep. Document these steps for HACCP compliance.
What if more dietary requests come in than expected?
Set agreements about maximum percentage of special diets (e.g., max 20% of total). Beyond that threshold: pass on extra planning and purchasing costs.
Should I offer the same menu options for special diets?
No, create 2-3 solid options per dietary restriction rather than converting your entire menu. This keeps costs manageable while still providing choice.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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