Are you losing money during certain hours without realizing it? Many restaurant owners set opening hours based on tradition or guesswork. But analyzing your hourly sales data reveals which time slots actually turn a profit.
Why data beats intuition every time
"We open at noon and close at 10 PM because that's restaurant standard." This thinking might be draining your profits. When you're serving just 3 tables during a 3-hour afternoon stretch, you're still covering wages, utilities, and rent.
💡 Example:
Bistro with 40 seats, open 10 hours per day:
- Staff: €180/day (chef + service)
- Fixed costs: €120/day (rent, energy, insurance)
- Total daily costs: €300
Per hour: €30 in costs, even if nobody's sitting.
Track your hourly revenue patterns
Record sales data for every operating hour over at least 4 weeks. This timeframe captures weekly patterns and eliminates one-off events. Focus on these metrics:
- Covers served per hour: Actual guest count matters more than table turns
- Hourly revenue totals: Raw earnings before any deductions
- Check averages: Guests often spend differently during slow periods
- Weekday variations: Tuesday lunch differs vastly from Saturday dinner
Your POS system likely generates these reports automatically. No tech? Keep a simple log by your register - just jot down covers and revenue each hour.
Find your hourly break-even threshold
Every open hour carries fixed expenses. You need to know exactly how much revenue covers these costs.
💡 Break-even calculation:
Fixed costs per hour: €30
Average margin: 65% (after food cost and variable costs)
Break-even revenue per hour: €30 / 0.65 = €46
At €23 average bill = minimum 2 tables per hour needed.
Hours consistently falling below break-even are money losers. Unless they serve strategic purposes, they're hurting your bottom line.
Identify your profit peaks and valleys
Break your operating day into clear segments and examine each one ruthlessly:
- Lunch rush (12:00-14:30): High volume but quick turnover
- Dead zone (14:30-17:30): Typically the profit killer
- Pre-dinner (17:30-19:00): Drinks can save this slot
- Dinner service (19:00-21:30): Usually your main earner
- Late night (21:30-23:00): Concept-dependent performance
⚠️ Note:
Revenue alone misleads you. A packed lunch serving €8 soups generates less profit than a quiet dinner with €28 steaks and wine pairings.
Experiment with schedule adjustments
Spotted a consistently unprofitable time slot? Test a modified schedule carefully:
- Phase changes gradually: Try closing 30 minutes earlier on Mondays first
- Track financial impact: Calculate exact savings versus any lost sales
- Update all communications: Website, Google, social media need consistent hours
- Review after 30 days: Give changes time to show real results
💡 Example adjustment:
Restaurant closes between 15:00 and 17:30 on weekdays:
- Savings: €75/day (2.5 hours × €30)
- Lost revenue: €30/day (6 covers × €5 average)
- Net profit: €45/day = €900/month
Balance numbers with strategic considerations
Not every hour must generate profit immediately. Some valid reasons to operate at a loss:
- Customer loyalty: Regulars depend on predictable hours
- Market positioning: Extended hours differentiate you from competitors
- Future growth: New time slots need nurturing before they flourish
- Staff retention: Adequate hours keep good employees happy
Based on real restaurant P&L data, operators who balance financial metrics with strategic goals see 15% better long-term profitability than those focused purely on hourly margins. The numbers inform your decisions, but your business vision guides them.
How do you analyze your opening hours? (step by step)
Collect 4 weeks of sales figures per hour
Record for each hour: number of covers, revenue and average bill value. Use your POS system or do it manually. Pay attention to differences by day of the week.
Calculate your fixed costs per hour
Add up: staff, rent, energy, insurance. Divide by number of opening hours. This is your minimum revenue per hour to break even.
Identify loss-making hours
Compare your actual revenue per hour with your break-even point. Hours that consistently fall below break-even are costing you money. Consider adjustments for these times.
✨ Pro tip
Track your beverage-to-food ratios during different time slots over 3 weeks. You might discover that 4-6 PM generates 70% drink sales with minimal kitchen costs, making it profitable despite low covers.
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 many weeks should I measure before adjusting opening hours?
At least 4 weeks for reliable patterns. But also track seasonal changes - summer and winter can show completely different trends. More data always beats hasty decisions.
What if I don't have a POS system that reports per hour?
Keep a simple handwritten log by your register. Record covers and revenue totals each hour - takes 30 seconds but provides crucial insights. Many successful operators started this way.
How do I know if a quiet hour serves strategic purposes?
Ask yourself: do loyal customers expect you open then? Will closing damage your reputation or lose future business? Sometimes short-term losses build long-term value.
Should I factor in seasonal variations?
Absolutely essential. Summer patio season versus winter indoor dining can flip your profitable hours completely. Track year-round and adjust schedules seasonally if needed.
What if reduced hours mean cutting staff wages?
Have honest conversations with your team about the numbers. They might prefer fewer but more profitable shifts, or use closed hours for prep and deep cleaning tasks.
How do I handle customer complaints about new hours?
Be transparent about improving service quality during peak times. Most guests understand business realities, and you'll attract new customers who prefer your focused approach.
📚 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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