Suppliers regularly raise their prices, but many restaurant owners don't adjust their menu. This causes your margin to shrink without you noticing and you earn less per dish.
Nearly 60% of restaurants fail to adjust menu prices within 6 months of supplier increases. This silent margin erosion happens gradually - you're earning less per dish without realizing it. The solution lies in systematic price monitoring and strategic adjustments.
Most restaurant owners update their menu once or twice yearly. But suppliers? They bump prices every few months. The math is brutal: your food costs creep up while menu prices stay frozen.
Why prices lag behind higher purchasing costs
💡 Example:
Your steak cost €8.00 in ingredients last year. You sell it for €32.00 incl. VAT (€29.36 excl. VAT).
Food cost then: (€8.00 / €29.36) × 100 = 27.2%
Beef rises by 20%: ingredients now €9.60
Food cost now: (€9.60 / €29.36) × 100 = 32.7%
You've lost 5.5 percentage points of margin. Silently.
Check your food cost per dish regularly
Track cost prices religiously - it's the only way to catch margin erosion early. Focus on your heavy hitters since they drive total profit.
- Monthly: Check your top 5 best-selling dishes
- Per quarter: Review your entire menu
- When supplier changes prices: Audit all dishes with that ingredient
⚠️ Note:
Suppliers often bury price increases in fine print. Compare invoices month-to-month yourself - it's the kind of thing you only learn after closing your first month at a loss.
Calculate your new minimum selling price
When food costs spike, you need new pricing. Use this formula:
Minimum selling price excl. VAT = Ingredient costs / (Desired food cost % / 100)
💡 Example:
Your pasta now costs €6.50 in ingredients. You want maximum 30% food cost.
Minimum price excl. VAT: €6.50 / 0.30 = €21.67
Minimum price incl. 9% VAT: €21.67 × 1.09 = €23.62
Round to: €23.95 or €24.50
Your current price was €22.50. You need at least €1.45 more.
Smart strategies for price increases
Nobody enjoys raising prices. But bankruptcy's worse. These tactics help retain customers:
- Gradual increases: Spread changes across months, not all at once
- Adjust portion size: Slightly smaller portions at same price
- Optimize recipe: Find cheaper ingredients without quality loss
- Menu engineering: Highlight profitable dishes prominently
💡 Example of gradual increase:
You have 12 main dishes needing price bumps:
Month 1: Raise the 4 top sellers
Month 2: Adjust 4 more dishes
Month 3: Handle the final 4
Customers barely notice compared to one massive increase.
The impact of different ingredient categories
Not all ingredients hit your wallet equally. Know which categories pack the biggest punch:
- Meat and fish: Wildest price swings, often 30-40% of recipe costs
- Dairy and eggs: Moderate fluctuations, steady upward trends
- Vegetables and fruit: Seasonal chaos, huge variation possible
- Grains and basics: Long-term trends, rarely sudden shocks
Calculating price impact per ingredient
To identify your biggest cost drivers, use this formula:
Price impact = (Ingredient costs per portion / Total recipe costs) × Price increase percentage
An ingredient representing 40% of recipe costs with a 15% price jump raises total recipe costs by: 0.40 × 15% = 6%
Practical example: Restaurant The Green Table
Restaurant The Green Table serves a popular salmon salad for €18.50 (incl. VAT). Original recipe costs were:
- Salmon: €4.20 per portion
- Vegetables and salad: €1.80
- Other ingredients: €0.80
- Total costs: €6.80
- Food cost: (€6.80 / €16.97) × 100 = 40.1%
Six months later, salmon prices jumped 25%:
- New salmon costs: €4.20 × 1.25 = €5.25
- New total costs: €5.25 + €1.80 + €0.80 = €7.85
- New food cost: (€7.85 / €16.97) × 100 = 46.3%
To restore 40% food cost, the new price should be:
€7.85 / 0.40 = €19.63 excl. VAT × 1.09 = €21.40 incl. VAT
The owner chose gradual adjustment: first to €19.95, then evaluate after 2 months for further increases.
Common mistakes when adjusting prices
1. Waiting too long to adjust prices
Many owners postpone increases until annual menu updates. Margins bleed for months. Check main dishes quarterly minimum.
2. Only looking at absolute amounts
A €0.50 bump on a €5 dish hits harder than on a €15 dish. Think percentages: €0.50 on €5 equals 10% increase, on €15 just 3.3%.
3. Raising all prices at once
Customers spot this instantly and may bolt. Spread increases over 2-3 months, starting with top sellers.
4. Forgetting to account for VAT
Always calculate excluding VAT first, then add tax. Using VAT-inclusive prices for food cost calculations gives wrong results.
5. Not communicating with staff
Ensure your team knows which prices changed and why. They can explain to customers that quality and freshness matter most.
Automate your cost price monitoring
Manual checking eats time and you'll forget. Systems show immediately when food costs spike from rising purchase prices.
- Update purchase prices in the system
- See instant impact on food cost per dish
- Auto-calculate new minimum selling prices
- Get alerts when food costs exceed targets
You'll never lag behind reality and maintain margin control.
Summary
Rising purchase prices demand proactive moves. Check top sellers monthly and adjust prices before margins crater. Use minimum pricing formulas, increase gradually to retain customers, and consider automation for timely adjustments. Remember: price increases are normal in hospitality - customers accept them if you maintain quality and service.
How do you adjust prices when purchasing costs rise? (step by step)
Check your current food cost
Calculate for each dish: (ingredient costs / selling price excl. VAT) × 100. Focus first on your best-selling dishes. If you're above 35%, you need to take action.
Calculate your new minimum price
Use the formula: ingredient costs / (desired food cost % / 100). For 30% food cost you divide by 0.30. Don't forget to add VAT afterwards for your menu price.
Choose your increase strategy
Don't raise all prices at once. Start with your best-selling dishes or spread the increases over 2-3 months. This way customers notice it less.
Update your menu and systems
Update your menu and all prices in your POS system. Inform your staff about the changes so they can answer customer questions.
Monitor the effect
Keep a close eye on how customers react in the first weeks after a price increase. Check if your revenue and number of guests remain stable.
✨ Pro tip
Update your purchase prices in your system every 4 weeks, even before menu adjustments. You'll spot margin erosion within 30 days instead of discovering it months later.
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
How often should I check my prices?
Check your top 5 best-selling dishes monthly and your entire menu quarterly. Also audit dishes immediately after supplier price notifications.
What if customers leave because of higher prices?
Increase gradually and emphasize quality. Small percentage bumps usually go unnoticed. Better to raise prices than close from razor-thin margins.
Can I reduce portions instead of raising prices?
Yes, but do it subtly. Customers notice dramatically smaller portions faster than modest price increases. Test what works for your clientele.
Should I match my competitor's pricing exactly?
Focus on your numbers, not theirs. If you're losing money at current prices, you'll fail regardless of competition. They might have different cost structures or quality standards.
How do I time price increases with seasonal menu changes?
Don't wait for seasonal updates if costs spike mid-season. Adjust prices within 4-6 weeks of major ingredient cost increases to protect margins.
What's the maximum percentage I can increase without losing customers?
Most customers accept 3-5% increases without complaint. Beyond 8-10%, you risk pushback unless you clearly communicate added value or quality improvements.
How do I handle staff questions about frequent price changes?
Train staff to focus on ingredient quality and freshness when discussing prices. Explain that maintaining standards requires adjusting to market conditions.
📚 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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