Calculating your interior investment's payback period is like mapping out a route before a long journey - you need to know exactly when you'll reach your destination. Most restaurant owners underestimate how long it takes for new equipment, furniture, or renovations to actually pay for themselves. Here's how to determine when your investment breaks even.
What is payback period?
Payback period shows how many months or years you'll need to recover your investment through additional revenue or cost savings. It's the most critical number for determining whether an investment makes financial sense.
? Example:
You spend €30,000 on a new kitchen that saves €500 monthly on energy costs:
Payback period: €30,000 / €500 = 60 months (5 years)
Calculate your total investment
Add up every cost related to your interior project. Hidden expenses can double your budget if you're not careful:
- Furniture: tables, chairs, sofas, lighting
- Kitchen equipment: ovens, refrigeration, ventilation
- Renovation: demolition, electrical, plumbing
- Installation: assembly, equipment connection
- Lost revenue: closed days during renovation
- Permits: building permit, environmental permit
⚠️ Note:
Don't forget lost revenue in your investment total. Being closed for 10 days at €1,000 daily revenue adds another €10,000 to your real investment cost.
Calculate the financial benefit per month
Your investment must generate money through increased revenue or reduced costs. Figure out your monthly financial gain:
Extra revenue from increased capacity
- More tables = more covers per evening
- Better kitchen = faster service = higher turnover
- Improved interior = ability to charge premium prices
? Example of increased capacity:
Before renovation: 40 covers per evening, 6 days weekly
After renovation: 50 covers per evening
- Additional covers: 10 per evening × 6 days = 60 weekly
- Average check: €35 per person
- Extra weekly revenue: 60 × €35 = €2,100
- Extra monthly revenue: €2,100 × 4.3 = €9,030
Lower costs from more efficient equipment
- New oven: 30% reduction in energy consumption
- LED lighting: 80% lower electricity bills
- Better refrigeration: reduced food waste
- Optimized kitchen layout: fewer staff hours needed
Apply the formula
Now you can determine the payback period using this simple formula:
Payback period = Total investment / Monthly benefit
? Complete calculation:
Restaurant renovation example:
- Total investment: €85,000
- Extra monthly revenue: €9,030
- Monthly cost savings: €800
- Total monthly benefit: €9,830
Payback period: €85,000 / €9,830 = 8.6 months
Is your payback period acceptable?
Acceptable payback periods vary by investment type:
- Kitchen equipment: 2-4 years reasonable
- Furniture: 3-5 years reasonable
- Complete renovation: 4-7 years reasonable
- Energy-saving measures: 3-6 years reasonable
⚠️ Note:
Calculate using extra profit, not extra revenue. That €1,000 in additional revenue might only yield €300 in profit after food and labor costs - the kind of thing you only learn after closing your first month at a loss.
Other factors to consider
Payback period matters, but it's not your only consideration:
- Lifespan: will your investment last 10 years or just 3?
- Maintenance costs: do new appliances require expensive upkeep?
- Competitive advantage: does it help differentiate your restaurant?
- Staff satisfaction: does your team work more efficiently in the updated space?
- Menu flexibility: can you create new dishes with better equipment?
A digital system helps you track the actual financial impact of your investments by monitoring food costs and margins before and after renovations.
How do you calculate payback period? (step by step)
Add up all investment costs
Make a list of all costs: furniture, equipment, renovation, installation, and lost revenue during closure. Don't forget VAT and unforeseen costs (budget an extra 10-15%).
Calculate the monthly benefit
Add up how much you earn extra monthly through more revenue or lower costs. Remember: calculate with profit, not revenue. From €1,000 extra revenue often only €300 remains.
Divide investment by monthly benefit
Use the formula: Total investment / Monthly benefit = Payback period in months. A payback period of 2-5 years is acceptable for most hospitality investments.
✨ Pro tip
Track your actual monthly gains for the first 12 months after renovation and compare them to your original projections - this builds your estimation skills for future investments.
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.
Was this article helpful?
Frequently asked questions
Should I include VAT in my investment amount?
How do I calculate lost revenue during renovation?
What if I'm uncertain about projected extra revenue?
What if my payback period is too long?
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.
More in this category
Related questions
Explore more topics
Start your restaurant with the right numbers
A business plan without food cost calculation is a gamble. KitchenNmbrs lets you calculate recipes before you open. Start well-prepared. Try it free.
Start free trial →