73% of restaurants experience margin compression during their first growth phase. Revenue climbs but profit per euro shrinks. Here's how to diagnose the problem and fix it fast.
First, analyze where the problem lies
Revenue up, margin down? Different culprits could be draining your profits. You've got to identify the real cause before making any moves.
? Example:
Restaurant last month:
- Revenue: €45,000
- Food cost: €13,500 (30%)
- Net margin: 15%
This month:
- Revenue: €52,000 (+15%)
- Food cost: €18,200 (35%)
- Net margin: 8%
Revenue climbs, but profit drops from 15% to 8%.
Check these 4 causes
1. Ingredient prices have jumped
Suppliers bump prices constantly, yet many owners forget to update their menu pricing. Same dishes now cost more to prepare but generate identical revenue.
2. Portion creep has set in
Your chef starts getting generous with servings? Costs per dish skyrocket. That steak growing from 200g to 250g adds €3.00 per plate at €24/kg beef prices.
⚠️ Watch out:
Verify your team still follows recipes exactly. Staff often cook intuitively, causing portions to gradually expand.
3. Product mix shifted
You might be pushing more premium dishes (boosting revenue) that carry thinner margins. Or customers gravitate toward drinks with lower profit percentages.
4. Waste multiplied
Higher volume means more opportunities for errors: poor forecasting, expired inventory, kitchen mistakes. I've seen this mistake cost the average restaurant EUR 200-400 per month during busy periods.
Calculate the impact per cause
You need hard numbers showing which factor hits your margin hardest. Then you can prioritize your response.
? Example calculation:
Your food cost jumped from 30% to 35% at €52,000 revenue:
- 5 percentage point gap = 0.05 × €52,000 = €2,600/month
- Annually: €31,200 in additional costs
That's €31,200 yearly profit vanishing.
Calculate actual cost price per dish right now. Total all ingredients and divide by your selling price excluding VAT. Above 35%? You're bleeding money on that item.
You have 4 options to fix this
Option 1: Bump your prices
- Quickest fix available
- Effective if competitors also raised rates
- Risk: customer defection if you overprice
Option 2: Slash your costs
- Hunt for cheaper suppliers
- Reformulate recipes using budget ingredients
- Enforce strict portion control
Option 3: Redesign your menu
- Push high-margin dishes harder
- Eliminate money-losing items
- Introduce profitable new options
Option 4: Accept thinner margins short-term
- If costs should normalize soon
- If preserving market position matters
- Only viable with strong cash reserves
? Combination approach:
Mixed strategies often work better:
- Increase prices 3-5% (phase it in)
- Tighten portion control immediately
- Spotlight your most profitable items
This spreads risk while keeping customers happy.
Prevent this in the future
Catch margin erosion early by monitoring these metrics weekly:
- Food cost percentage by week
- Average transaction value
- Cover count versus total revenue
- Cost breakdown for your 5 top sellers
Systems like KitchenNmbrs alert you instantly when food costs spike, letting you react before profitability takes a major hit.
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How do you tackle falling margin? (step by step)
Calculate your current food cost per dish
Add up all ingredient costs of your 5 best-selling dishes. Divide by selling price excl. VAT and multiply by 100 for the percentage.
Compare with last month
Check if your food cost percentage has risen. An increase from 30% to 35% costs you 5% of your revenue in extra costs.
Choose your approach
Decide whether you raise prices, lower costs, or adjust your menu. Often a combination works best to spread the risk.
✨ Pro tip
Track your top 5 bestselling dishes' actual costs every Tuesday morning. If those stay profitable, you'll control 80% of your margin risk within a 10-minute weekly check.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Calculate it yourself?
Our free food cost calculator does it in seconds.
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Frequently asked questions
How much can I raise prices without losing customers?
What if my competitor keeps prices lower?
How often should I monitor my food costs?
Should I wait for ingredient costs to drop again?
Which menu items deserve elimination first?
Can I test price increases on just a few items?
How do I explain price increases to regular customers?
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
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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