A take-away window can boost your revenue significantly, but only if the numbers add up. Many restaurant owners underestimate the extra costs and overestimate the revenue. In this article, you'll calculate step by step whether a take-away window is financially feasible for your situation.
What does a take-away window cost?
A take-away window seems simple, but brings more costs than you might think. You need not only the renovation, but also extra staff, packaging and administration.
💡 Example take-away window costs:
- Window renovation + register: €15,000
- Extra packaging material: €800/month
- Extra staff (20h/week): €2,400/month
- Marketing/signage: €2,000 one-time
Total investment: €17,000 + €3,200/month
Calculate your break-even point
To know if the window is profitable, you need to calculate how much extra revenue you need to cover the costs.
Break-even formula:
Required extra revenue = Extra costs / Net margin %
💡 Example break-even calculation:
Extra costs per month: €3,200
Average net margin: 25%
Required extra revenue: €3,200 / 0.25 = €12,800/month
⚠️ Note:
Always calculate with your net margin, not your revenue. If your food cost is 30% and labor costs are 35%, your net margin is maximum 35%.
Estimate your potential take-away revenue
Now you need to realistically estimate how much revenue the window will generate. Look at your current figures and your restaurant's location.
- How many passersby walk by daily?
- What percentage of them buy impulse food/drinks?
- What's your average take-away transaction value?
- On which days/times do you expect the most sales?
💡 Realistic take-away estimate:
- Average 25 customers per day
- Average transaction: €8.50
- Open 6 days per week
- 25 × €8.50 × 6 × 4.3 = €5,483/month
This is €7,317 below your break-even of €12,800
Cannibalization: are you losing existing revenue?
A major risk is that take-away customers are simply your existing restaurant customers who now spend less. This is called cannibalization.
- What percentage of your take-away customers are existing guests?
- Do they spend less through the window than in the restaurant?
- Do you earn less margin on take-away due to packaging costs?
⚠️ Note:
If 40% of your take-away customers previously ate in the restaurant, and their average transaction drops from €32 to €8.50, you lose €23.50 in revenue per customer.
ROI calculation over 3 years
Add up all costs and revenue and calculate whether the investment pays for itself.
ROI formula:
ROI = (Total profit 3 years - Total investment) / Total investment × 100
💡 ROI example (3 years):
- Total investment: €17,000 + (€3,200 × 36) = €132,200
- Extra revenue: €5,483 × 36 = €197,388
- Extra profit (25% margin): €49,347
- ROI: (€49,347 - €132,200) / €132,200 = -63%
Negative ROI = not profitable
When is a take-away window actually profitable?
A window can be successful if you meet these conditions:
- Minimum 60% new customers (no cannibalization)
- Average take-away transaction of €12+ through upselling
- Location with lots of foot traffic (station, shopping street)
- Products with high margins (coffee, pastries, soup)
With an app like KitchenNmbrs you can analyze your current margins per product and select the most profitable items for your window.
How do you calculate feasibility? (step by step)
Calculate all extra costs
Make a list of one-time costs (renovation, equipment) and monthly costs (staff, packaging, energy). Add everything up for a realistic cost picture.
Determine your break-even revenue
Divide your extra monthly costs by your net profit margin. This gives you the minimum extra revenue you need to break even.
Estimate realistic take-away sales
Count passersby, estimate conversion percentage and average transaction value. Be conservative in your estimate - better to be pleasantly surprised than disappointed.
Calculate cannibalization effect
Estimate what percentage are existing customers and how much revenue you lose on them. Subtract this from your expected take-away revenue.
Make a 3-year ROI calculation
Compare total investment with expected profit over 3 years. A positive ROI of at least 15% makes the project interesting.
✨ Pro tip
Test first for a month with a temporary take-away setup (table by the door) before investing in renovation. This gives you realistic sales figures without major financial risk.
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 is a realistic average transaction value for take-away?
For most restaurants this is between €6-12. Coffee and pastries €4-8, lunch items €8-15. It depends on your concept and location.
What percentage of take-away customers are usually new customers?
This varies greatly by location. In a shopping street 70-80% new customers, in a residential area often only 40-50%. Test this by asking customers in the first month.
Should I include VAT in my break-even calculation?
Always calculate excluding VAT. Your break-even revenue is the revenue excl. VAT that you need to cover your costs.
How long does it typically take for a take-away window to break even?
With a successful window 8-18 months. The first 3 months are usually below expectations due to lack of awareness.
Which products have the highest margin for take-away?
Coffee (margin 80%+), soups (margin 70%+) and pastries (margin 60%+) usually perform best. Avoid products that require a lot of packaging.
Can I spread the investment to lower the risk?
Yes, start with a simple opening in your facade and basic packaging. Invest in better equipment as sales increase.
⚠️ EU Regulation 1169/2011 — Allergen Information — https://eur-lex.europa.eu/eli/reg/2011/1169/oj
The allergen information on this page is based on EU Regulation 1169/2011. Recipes and ingredients may vary by supplier. Always verify current allergen information with your supplier and communicate this correctly to your guests. KitchenNmbrs is not liable for allergic reactions.
In the UK, the FSA enforces allergen regulations under the Food Information Regulations 2014.
📚 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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