Loyalty programs can increase your revenue, but they also cost money. Many entrepreneurs start a punch card promotion without calculating whether it's actually profitable. In this article, you'll learn exactly how to calculate whether a loyalty program is profitable for your business.
The real costs of loyalty programs
A punch card seems simple: buy 10 coffees, get the 11th free. But what does this actually cost you?
💡 Coffee punch card example:
Coffee selling price: €2.50 incl. VAT
- Selling price excl. VAT: €2.29
- Ingredient costs: €0.45
- Margin per coffee: €1.84
With 10+1 free, you lose €1.84 margin on every 11th coffee.
But there are more costs:
- Printing punch cards: €0.15 per card
- Stickers or stamps: €0.02 per stamp
- Extra time at checkout: 15 seconds per transaction
- Administration: keeping track of which cards are valid
Calculate the break-even of your loyalty program
The same formula applies to every loyalty program:
Costs per cycle = Free product margin + Operational costs
💡 Example calculation:
Coffee punch card (10+1 free):
- Lost margin 11th coffee: €1.84
- Punch card: €0.15
- 11 stamps at €0.02: €0.22
- Extra checkout time (11 × 15 sec × €25/hour): €1.15
Total costs per cycle: €3.36
You need to recover these costs through increased spending from the same customers.
How much extra revenue do you need?
Your loyalty program is profitable if customers spend more than the cost of the program.
⚠️ Note:
Only count EXTRA revenue. Customers who were already buying 11 coffees per month don't generate extra revenue.
Formula: Extra revenue needed = Program costs / Average margin %
💡 Example break-even calculation:
Costs per cycle: €3.36
- Average margin on products: 75%
- Extra revenue needed: €3.36 / 0.75 = €4.48
Each punch card customer needs to spend €4.48 extra to break even.
Measure the success of your loyalty program
Track these numbers to see if your program is working:
- Average spending per customer before and after the program
- Visit frequency: are customers coming more often?
- Redemption rate: how many cards are fully used?
- Total extra revenue vs. total program costs
💡 Example results measurement:
After 3 months of punch card promotion:
- 500 cards issued
- 200 cards redeemed (40%)
- Average spending increased from €8.50 to €12.00
- Extra revenue: €3.50 × 200 customers × 3 months = €2,100
- Program costs: 200 × €3.36 = €672
Profit: €2,100 - €672 = €1,428 over 3 months
Alternative loyalty programs
Not every program needs to run on free products:
- Discount programs: 10% discount after 10 purchases
- Upgrade programs: free upgrade to larger size
- Bundle deals: coffee + pastry for fixed price
- Time-limited promotions: double points on Tuesday
⚠️ Note:
Always test on a small scale first. Start with 100 cards and measure results for 2 months before expanding the program.
How do you calculate whether a loyalty program is profitable?
Calculate the total costs per cycle
Add up: lost margin on free product + material costs (cards, stickers) + extra checkout time + administration. These are your real costs per completed punch card.
Determine how much extra revenue you need
Divide your total costs by your average margin percentage. This amount must be spent EXTRA by each customer to make the program profitable.
Test on a small scale and measure results
Start with 100-200 cards and track 2-3 months: average spending per customer, visit frequency, and redemption rate. Only then expand to more customers.
✨ Pro tip
Start with a simple 10+1 free program and first measure whether customers spend more before you launch more complex programs.
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 redemption rate for punch cards?
Between 30-50% of issued punch cards are fully redeemed. Customers lose cards, forget them, or stop coming before the card is full.
Do I need to charge VAT on free products?
No, you don't pay VAT on free products. But do calculate with your lost margin excl. VAT for the cost calculation of the program.
How long does it take to see results from a loyalty program?
Plan for 2-3 months before you have reliable data. Customers need time to fill their card and behavior change takes a while.
What if my program runs at a loss?
Stop the program and analyze why. Often the problem is that customers don't spend more, they just pay less for the same thing. Consider a different type of program.
Can I track loyalty programs digitally?
Yes, apps like KitchenNmbrs can help track customer data and spending, but you need to calculate yourself whether the program is profitable.
📚 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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