I'll be honest - I've seen too many restaurant owners bleed money on service days that should've been closed years ago. They keep those doors open on slow Tuesdays or dead Sunday nights, hoping things will magically improve. Here's how to make that tough decision using actual numbers instead of wishful thinking.
Calculate the real costs of your service day
You can't make smart decisions without knowing what that service day actually costs. And I'm not talking about just the ingredients - every single expense that comes with opening your doors.
💡 Example: Sunday evening restaurant
Your restaurant is open every Sunday evening with an average of 15 guests:
- Staff: 2 people × 6 hours × €15 = €180
- Energy (heating, lighting, cooling): €45
- Fixed costs (rent, insurance): €85 per day
- Food cost for 15 guests: €120
Total costs: €430
Track every expense that happens because you're open that day. Staff wages, utilities, your share of rent - these costs hit you even if only three customers walk through the door.
Determine your break-even point
Now for the math that matters: how many covers do you need just to avoid losing money? Take your total costs and divide by what each customer spends on average.
💡 Break-even calculation:
Total costs Sunday evening: €430
Average bill amount: €32
Break-even: €430 ÷ €32 = 14 guests
With 15 guests you're just making profit. With 10 guests you lose €160.
Analyze the trend over 3 months
One rough week means nothing. But 12 weeks of data? That tells a story you need to listen to.
- Structural loss: 8 out of 12 weeks below break-even
- Seasonal influence: only winter/summer bad
- External factors: roadwork, competition
⚠️ Note:
Don't calculate with food cost alone. Staff and fixed costs continue regardless of low occupancy. You need to recoup those costs.
From years of working in professional kitchens, I've learned that patterns don't lie. If you're consistently missing your break-even point, hoping harder won't fix the problem.
Calculate the annual impact
Time for some brutal honesty about what that losing service day costs you over a full year. The numbers might shock you.
💡 Annual impact calculation:
Average loss per Sunday evening: €160
Number of Sundays per year: 52
Total annual loss: €160 × 52 = €8,320
By closing on Sunday you save €8,320 per year. That's money that goes straight to your profit.
Give it one last fair chance
If you're not ready to close yet, fine. But set real goals with actual deadlines - no more endless "let's see how it goes."
- Goal: reach break-even at least 8 out of 12 weeks
- Time limit: 3 months
- Action: marketing, menu adjustments, try different concepts
- Check point: evaluate every 4 weeks
Miss your targets? Then you've done everything reasonable and can close that service day without any guilt.
Consider alternative concepts
Maybe the day isn't the problem - maybe it's what you're doing with it. Can you make that time slot work differently?
- Takeaway/delivery only: less staff, same kitchen
- Private dinners: higher margin, fewer guests
- Workshops/events: different income source
- Space rental: passive income
Sometimes you'll make more money by thinking outside the traditional service model than by stubbornly sticking to what isn't working.
Step-by-step plan: deciding about an unprofitable service day
Calculate all costs
Add up: staff, energy, fixed costs and food cost for that service day. Also costs you incur if no one comes.
Determine break-even point
Divide total costs by average bill amount. This tells you how many guests you need at minimum to break even.
Analyze 12-week trend
Check whether it's structural loss or a temporary dip. 8 out of 12 weeks below break-even = structural problem.
Calculate annual impact
Multiply average loss per service day by number of times per year. This shows the real impact on your annual profit.
Set an ultimatum
Give it 3 months with concrete goals. If you don't reach them, you stop. No endless hope, but a measurable deadline.
✨ Pro tip
Track every service day for exactly 16 weeks with guest counts, revenue, and any unusual circumstances like weather or local events. This gives you enough data to spot real trends versus random bad luck.
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 long should I keep an unprofitable day going?
Maximum 3 months after you decide to give it one last chance. Set concrete goals and stop if you don't reach them.
Should I also include fixed costs in the calculation?
Yes, a portion of your rent, insurance and other fixed costs should be allocated to each service day. Otherwise you get a distorted picture.
What if it only goes badly in winter?
Then it's seasonal influence, not a structural problem. Calculate whether the good months compensate for the loss and consider adjusted opening hours in the low season.
Would it be better to adjust the menu instead of closing the day?
Try menu adjustments first, but give yourself a 3-month deadline. If that doesn't work, closing is often smarter than endless tinkering.
How do I calculate how many guests I need at minimum?
Divide your total costs for that day by your average bill amount. That gives you the break-even number of guests.
What if my staff contracts require minimum hours?
Factor those labor costs into your decision. If you're locked into paying staff anyway, you might need higher revenue targets to justify staying open. Sometimes renegotiating contracts makes more sense than losing money 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.
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