A busy restaurant doesn't automatically mean a healthy one. Many entrepreneurs see their revenue grow, but don't know if they have room to invest in new equipment, renovations or extra staff.
Running a restaurant is like driving a car - just because the speedometer shows high numbers doesn't mean the engine is healthy. Four financial indicators reveal if your restaurant has the strength to handle new investments without breaking down. Most owners mistake busy nights for business health, but the real story lives in your monthly numbers.
The 4 numbers that show investment room
Smart restaurant owners invest based on data, not hunches. These four financial indicators separate thriving businesses from those living paycheck to paycheck:
💡 Example: Restaurant The Oak
Monthly revenue: €45,000 | Food cost: 28% | Staff costs: 32%
- Gross margin: €32,400 (72%)
- Staff costs: €14,400
- Other costs: €12,000
Net remaining: €6,000 per month (13.3%)
Food cost under control (max 35%)
Food cost represents your biggest variable expense. If this percentage consistently exceeds 35%, you're operating without any safety margin for growth investments.
Formula: Food cost % = (Ingredient costs / Revenue excl. VAT) × 100
⚠️ Note:
Always calculate with revenue excluding VAT. Revenue of €50,000 incl. 9% VAT is €45,872 excl. VAT.
Positive cashflow (minimum 3 months in a row)
Positive cashflow means your monthly income exceeds all expenses consistently. This stability proves you can service investment debt without scrambling for cash.
- Revenue minus all costs = positive amount
- Minimum €2,000-3,000 per month left over
- Consistent performance, not just peak season results
💡 Example calculation:
Restaurant with €40,000 monthly revenue:
- Food cost (30%): €12,000
- Staff (35%): €14,000
- Rent and other: €10,000
Cashflow: €4,000 per month = healthy for investments
Fixed costs below 45%
Fixed expenses include rent, insurance, depreciation and recurring monthly payments that don't fluctuate with sales volume. Lower percentages here create more room for expansion. I've seen restaurants make a mistake that costs them EUR 200-400 per month by not tracking this ratio properly - they commit to investments while their fixed cost percentage creeps above 50%, leaving zero cushion for downturns.
Calculate it this way: (Fixed costs / Revenue excl. VAT) × 100
Break-even point well below current revenue
Your break-even point shows the minimum monthly revenue needed to cover all expenses. If this number sits close to your current sales, you're operating without any buffer for slower periods.
💡 Healthy situation:
Current revenue: €50,000/month
- Break-even: €35,000/month
- Buffer: €15,000 (30%)
This buffer gives you room for investments and setbacks.
Red flags: avoid investing now
These warning signals indicate you're not ready for major capital expenditures:
- Food cost above 38% and climbing
- Negative cashflow in 2 of the last 6 months
- Break-even point within 10% of current revenue
- No cash reserve covering 3 months of fixed costs
⚠️ Note:
Never invest your last reserves. Always keep at least 3 months of fixed costs aside for unexpected setbacks.
Which investments have priority
Once your numbers show green lights across the board, invest strategically. This priority order delivers the strongest returns:
- Kitchen equipment: Boosts efficiency, reduces labor costs
- Digital systems: Save time and improve financial control
- Renovation: More seating capacity = higher revenue potential
- Marketing: Only if you can handle increased customer volume
How do you assess your investment room? (step by step)
Calculate your average monthly cashflow
Subtract all costs from your average monthly revenue (excl. VAT): food cost, staff, rent, energy, insurance. The amount left over is your cashflow. This must be at least €2,000 and positive for 3 months in a row.
Check your food cost percentage
Divide your total ingredient costs by your revenue excl. VAT and multiply by 100. A healthy food cost is between 28-35%. Above 35% you have no room for extra costs from investments.
Determine your break-even point and buffer
Calculate at what revenue you break even. Your current revenue must be at least 20-30% higher than this break-even point. This buffer gives you room to recoup investments.
✨ Pro tip
Check your net profit margin over 6 months - if it stays above 8% consistently, you're ready to invest. Anything below 8% means you need operational improvements first.
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 much cashflow do I need minimum for investments?
Minimum €2,000-3,000 per month, sustained for 3 consecutive months. Plus maintain a separate cash reserve covering 3 months of fixed costs that you never touch.
Can I invest if my food cost is 36%?
Not recommended. Focus on reducing food cost below 35% first. Every investment adds extra expenses that require absorption capacity you currently lack.
My revenue grows but profit stays flat. Can I still invest?
Absolutely not - this signals escalating costs eating your growth. Fix your cost structure before considering any investments, or you'll amplify existing problems.
What if I have positive cashflow but high food costs?
Wait and optimize your food cost percentage first. High food costs indicate operational inefficiencies that investments won't solve and may worsen.
📚 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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