Supplier price hikes hit restaurant profits harder than expected. A 10% ingredient cost increase can slash your annual profit by thousands. Here's exactly how to calculate the impact and respond strategically to protect your margins.
A 10% supplier price increase typically reduces restaurant profits by 3-5 times more than owners expect. Most operators underestimate how ingredient cost spikes compound across their entire operation. Here's how to calculate the real impact and protect your margins.
Why a 10% price increase hurts more than you think
A 10% price bump doesn't sound dramatic. But in hospitality, where margins are razor-thin, this shift creates major consequences for your bottom line.
💡 Example:
You sell a steak for €32.00 (incl. 9% VAT):
- Sales price excl. VAT: €29.36
- Ingredient costs before increase: €9.00
- Food cost: 30.7%
After 10% price increase:
- New ingredient costs: €9.90
- New food cost: 33.7%
- Difference: 3 percentage points higher
The formula for impact calculation
To calculate what happens to your food cost and profit, use these formulas:
New ingredient costs = Old costs × 1.10
New food cost % = (New ingredient costs / Sales price excl. VAT) × 100
Impact on profit = Difference in food cost % × Annual turnover
Step by step: calculate the impact
💡 Practical example:
Restaurant with €400,000 annual turnover, average food cost 30%:
- Current ingredient costs per year: €120,000
- After 10% increase: €132,000
- Extra costs: €12,000 per year
- New food cost: 33%
Impact: €12,000 less profit per year
Your options after managing kitchen operations for nearly a decade
Once your suppliers raise their prices, you've got four paths forward:
- Do nothing: Your food cost rises, your profit falls
- Raise menu prices: Pass it on to your guests
- Adjust portion sizes: Slightly smaller portions
- Find another supplier: Look for a cheaper alternative
⚠️ Watch out:
Many entrepreneurs choose to do nothing and hope things improve. That's usually the most expensive choice long-term.
Adjusting menu prices: how much to add?
If you want to adjust your menu price to maintain your margin, calculate it this way:
New minimum sales price = New ingredient costs / (Desired food cost % / 100)
💡 Example:
Steak with 30% desired food cost:
- New ingredient costs: €9.90
- Minimum price excl. VAT: €9.90 / 0.30 = €33.00
- Minimum price incl. VAT: €33.00 × 1.09 = €35.97
From €32.00 to €36.00 = €4.00 increase
Impact per dish vs. total business
Not all ingredients spike simultaneously. Focus first on your top-selling dishes and priciest ingredients:
- Meat and fish: Biggest impact on food cost
- Specialty ingredients: Truffles, lobster, premium products
- Large volumes: Ingredients you use frequently
A 10% increase on your meat hits harder than 10% on your parsley.
Deciding to switch suppliers
Consider switching suppliers if:
- The increase is structural (not temporary)
- Other suppliers offer significantly lower prices
- Quality remains consistent
- You have regular orders (stronger negotiating position)
⚠️ Watch out:
Always calculate total costs, including delivery. A supplier that's €1/kg cheaper but charges €50 for delivery often costs more overall.
How do you calculate the impact of a 10% price increase?
Calculate your current ingredient costs per dish
Add up all the ingredients from your most important dishes. Note the current cost price per portion. This is your starting point for the calculation.
Calculate the new costs after the increase
Multiply your current ingredient costs by 1.10 (for 10% increase). Then calculate your new food cost percentage: new costs divided by sales price excl. VAT times 100.
Calculate the impact on an annual basis
Multiply the difference in food cost percentage by your annual turnover. This gives you the total impact on your profit. For example: 3% difference on €400,000 turnover = €12,000 less profit.
✨ Pro tip
Run scenario calculations for 5%, 10%, and 15% increases on your three most expensive ingredients. Having these numbers ready helps you respond within 48 hours instead of scrambling for weeks.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Was this article helpful?
Frequently asked questions
Should I raise my prices immediately if suppliers become more expensive?
Not necessarily immediately, but within a few months. First check if other suppliers are cheaper and calculate exactly what the impact is on your profit.
How much percent can I raise my menu prices without losing customers?
This depends on your type of business and competition. Common is 3-5% per year. Larger increases are better spread over time or combined with added value.
Is it better to adjust portion sizes instead of raising prices?
That's possible, but be careful. Guests notice smaller portions faster than a small price increase. Consider combining: slightly smaller portion and slightly higher price.
How often do supplier prices increase on average?
Meat and fish can fluctuate monthly. Dry goods usually 1-2 times per year. Vegetables and fruit follow seasons and can change weekly.
📚 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.
Calculate it yourself with KitchenNmbrs
All the formulas you learn here — KitchenNmbrs calculates them automatically. Enter your ingredients and instantly see your food cost, margin, and selling price. Try it free for 14 days.
Start free trial →