Many restaurant owners believe that controlling food costs guarantees profitability - but that's simply not true. You can nail your 30% food cost target and still watch your bank account drain monthly. The real culprit? Overhead costs that silently consume every euro of gross profit.
Why is your net profit disappearing?
The problem sits with invisible costs that run monthly, regardless of sales volume. Your food cost per dish stays controlled, but fixed expenses keep ticking. And here's a mistake that costs the average restaurant EUR 200-400 per month: not tracking overhead as a percentage of revenue.
💡 Example:
Restaurant with €50,000 monthly revenue:
- Gross profit: €32,500 (35% food cost)
- Rent: €8,000
- Staff: €18,000
- Energy: €2,500
- Other overhead: €4,500
Net profit: €32,500 - €33,000 = -€500 loss
Analyze your overhead costs by category
Break down fixed costs into categories to spot the problem areas:
- Rent and lease: Should stay 8-15% of revenue
- Staff costs: Typically 30-40% of revenue
- Energy: Normal range 3-6% of revenue
- Marketing and advertising: Usually 2-5% of revenue
- Insurance and administration: Often 2-4% of revenue
⚠️ Watch out:
Total overhead above 50% of revenue makes profitability nearly impossible. Even with perfect 30% food costs, you're fighting an uphill battle.
Where can you make adjustments?
Not all overhead costs bend easily. Target the biggest items first:
Staff costs (usually the biggest drain):
- Check occupancy rates per service period
- Identify times with excess staff coverage
- Can you combine tasks or schedule more efficiently?
Energy costs:
- Audit equipment running unnecessarily
- Inspect refrigeration unit insulation
- Compare energy contract options
💡 Savings example:
Optimizing staff scheduling:
- Was: 4 people on quiet Mondays
- Now: 2 people on quiet Mondays
- Savings: €120 per Monday × 4 = €480/month
Annual savings: €5,760
The 50-30-20 rule for healthy margins
A reliable framework for sustainable cost structure:
- 50% of revenue: All overhead (rent, staff, energy, etc.)
- 30% of revenue: Food cost
- 20% of revenue: Net profit for owner
Overhead exceeding 50%? Something must change. Otherwise there's insufficient profit remaining.
Temporary vs. structural measures
Temporary measures (immediate results):
- Reduce staff during slow periods
- Temporarily cut marketing budget
- Monitor energy consumption closely
Structural measures (long-term impact):
- Renegotiate lease agreements
- Invest in energy-efficient equipment
- Automate processes reducing staff needs
⚠️ Watch out:
Never sacrifice quality-affecting elements. Poor food or service costs more long-term than any savings achieved.
Managing overhead with proper tools
Restaurant management platforms help track your complete cost picture:
- Automatically calculate and monitor food costs
- Track daily revenue to identify trends
- Quickly adjust pricing when supplier costs increase
This maintains gross profit control while separately analyzing overhead expenses. You get the complete picture of profit allocation.
How do you analyze your overhead costs? (step by step)
Collect all fixed costs from last month
Make a list of all costs that run regardless of your revenue: rent, staff, energy, insurance, administration, marketing. Add up everything you pay, even if you had no revenue.
Calculate each cost type as a percentage of revenue
Divide each cost item by your monthly revenue and multiply by 100. For example: €8,000 rent on €50,000 revenue = 16%. This shows you which items weigh the heaviest.
Identify the biggest cost items to tackle
Focus on items above 10% of your revenue. Usually that's staff and rent. Look at where you can realistically save 2-5% without compromising your quality.
✨ Pro tip
Audit your labor costs against daily sales patterns over 2 weeks. Most restaurants discover they can cut 15-20% from Monday-Wednesday shifts without affecting service quality.
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
What's normal overhead for a restaurant?
Healthy overhead runs 45-50% of revenue. Combined with 30% food cost, you retain 20% net profit. Above 55% makes profitability extremely challenging.
Can I renegotiate rent if I'm losing money?
Depends on your contract and local market conditions. Many landlords prefer reduced rent over vacant properties. Prepare with solid figures and alternative proposals.
Should I raise menu prices if overhead is excessive?
Price increases can help, but proceed carefully. Customers typically don't notice 5-10% increases, but 20% risks customer loss. Try reducing overhead first before pricing changes.
How often should I review overhead costs?
Monitor major items (rent, staff, energy) monthly as revenue percentages. This reveals trends and allows adjustments before problems escalate significantly.
📚 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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