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📝 Labor cost, P&L & break-even · ⏱️ 3 min read

How do I calculate the ROI of investing in a new POS system through my P&L?

📝 KitchenNmbrs · updated 17 Mar 2026

A new POS system can improve your operation, but it also costs money. Picture this: you're running a busy restaurant, spending hours each day wrestling with manual registers and cash discrepancies. You need to determine if that shiny new POS system will actually pay for itself through measurable improvements to your bottom line.

What is ROI and why does it matter?

ROI stands for Return on Investment - how much you get back for every euro you invest. With a POS system, it's about time savings, fewer errors, and better insights that translate into more profit.

💡 Example POS system investment:

Restaurant with 50 covers/day, 6 days/week:

  • POS system costs: €3,000 one-time + €120/month
  • Time savings: 30 min/day on administration
  • Fewer cash discrepancies: €50/month
  • Better inventory control: €200/month savings

Costs of the POS system

Add up all the costs that come with the POS system. Don't forget the hidden costs.

  • One-time costs: Hardware, software license, installation, training
  • Monthly costs: Subscription, maintenance, support
  • Hidden costs: Time for implementation, any adjustments needed

⚠️ Watch out:

Also factor in the time you and your team spend on implementation. That's time you can't spend with guests.

Calculate savings and benefits

A POS system saves money in different areas. Make these savings concrete and measurable.

  • Time savings: Less time opening/closing the register, daily reports
  • Fewer errors: No calculation mistakes, cash discrepancies
  • Better insights: Which dishes sell well, peak hour patterns
  • More efficient inventory: Smarter purchasing through sales data

💡 Example time savings:

30 minutes per day × 6 days = 3 hours/week savings

  • 3 hours × €25/hour = €75/week
  • €75 × 52 weeks = €3,900/year savings

You can spend that time with guests or developing new dishes.

ROI calculation step by step

The ROI formula is simple: (Annual savings - Annual costs) / Total investment × 100

💡 Complete ROI calculation:

Costs per year:

  • One-time investment: €3,000 (depreciate over 3 years = €1,000/year)
  • Monthly costs: €120 × 12 = €1,440/year
  • Total annual costs: €2,440

Savings per year:

  • Time savings: €3,900
  • Fewer cash discrepancies: €600
  • Inventory optimization: €2,400
  • Total savings: €6,900

ROI: (€6,900 - €2,440) / €3,000 × 100 = 149% per year

Impact on your P&L

From tracking this across dozens of restaurants, I've seen how a POS system affects different line items in your profit and loss statement. Here's how it shows up in your numbers.

  • Revenue: Possibly higher through better insights and faster service
  • Labor costs: Lower due to time savings on administration
  • Food cost: Possibly lower through better inventory control
  • Other costs: POS system subscription as a new cost item

⚠️ Watch out:

Calculate conservatively. Don't promise yourself too much. Better to be pleasantly surprised than disappointed.

Calculate payback period

Besides ROI, you want to know when your investment pays for itself. Payback period = Total investment / Monthly net savings

💡 Payback period example:

  • Total investment: €3,000
  • Net savings per month: (€6,900 - €2,440) / 12 = €372
  • Payback period: €3,000 / €372 = 8.1 months

After 8 months, you've recovered your investment.

POS system worth the investment?

A POS system usually pays off if your ROI comes in above 25% per year and the payback period stays under 2 years. For smaller establishments, the threshold may be higher.

  • Definitely worth it: ROI > 50%, payback period < 1 year
  • Probably smart: ROI 25-50%, payback period 1-2 years
  • Questionable: ROI < 25%, payback period > 2 years

How do you calculate the ROI of a POS system? (step by step)

1

Inventory all costs

Add up one-time costs (hardware, installation) and ongoing costs (subscription, maintenance). Don't forget implementation time - that costs money too.

2

Calculate concrete savings

Measure time savings in hours per week, add up cash discrepancies, estimate inventory optimization. Convert everything to euros per year.

3

Apply ROI formula

ROI = (Annual savings - Annual costs) / Total investment × 100. Above 25% ROI is usually a good investment.

✨ Pro tip

Track your current cash handling time and register discrepancies for exactly 14 days before investing. You'll have concrete baseline numbers that make your ROI calculation bulletproof.

Calculate this yourself?

In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.

Try KitchenNmbrs free →

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Frequently asked questions

Should I include VAT in my ROI calculation?

Calculate with amounts excluding VAT for an accurate picture. You can usually recover the VAT on your POS system through your VAT return.

How long should I depreciate a POS system?

Usually 3-5 years for hardware and software. Check with your accountant what's most tax-efficient for your situation.

What if my ROI comes out lower than expected?

Check if you've included all savings and if your costs are realistic. Sometimes the value only becomes visible after a year of operation.

Can I calculate ROI without precise figures?

Then estimate conservatively. Better to have a low expectation you exceed than a high expectation you fall short of.

How often should I recalculate my ROI?

Check after 6 months whether your savings match your expectations. You can always adjust, but give the system time to settle in.

Do cloud-based POS systems have different ROI considerations?

Yes, they typically have lower upfront costs but higher monthly fees. Factor in reduced IT maintenance costs and automatic updates when calculating your returns.

ℹ️ This article was prepared based on official sources and professional expertise. While we strive for current and accurate information, the content may differ from the most recent regulations. Always consult the official authorities for binding standards.

📚 Sources consulted

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.

JS

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.

🏆 8 years kitchen manager at 1NUL8 Group Rotterdam
Expertise: food cost management HACCP kitchen management restaurant operations food safety compliance

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