Case Study: How Euromarkt Saves €1.44M Annually with A2A Payments

Based on aggregated data from payware partner deployments. Names and identifying details have been changed.

The Business: Euromarkt operates 47 grocery stores across Germany and Austria. Annual revenue: €240M. Annual card payment fees: €1.92M.

The Problem: On margins of 1-2%, payment fees represented 0.8% of revenue - eating nearly half of net profit.

The Solution: Implemented account-to-account payments alongside card payments in March 2025.

The Result: After 14 months, 31% of transactions use A2A. Direct payment cost savings of €170K annually, plus €1.24M in additional gross margin from larger A2A basket sizes - a combined direct economic impact of €1.41M per year (rising to €1.46M when including reduced chargeback costs and operational efficiency gains).

This case study documents how a mid-sized grocery chain reduced payment costs and the measured outcomes after 14 months of A2A deployment.

The Economics That Drove the Decision

Understanding Grocery Margins

In grocery retail, thin margins make payment costs a critical variable. As one partner institution’s CFO noted: “Payment fees were eating nearly half our net profit. We had to find a lower-cost alternative.” Euromarkt’s finance team framed the opportunity in terms of margin impact rather than headline fee percentages.

Euromarkt’s 2024 Economics:

• Revenue: €240M
• Cost of goods sold: €192M (80%)
• Operating expenses: €43.2M (18%)
• Payment processing: €1.92M (0.8%)
• Net profit: €2.88M (1.2%)

Payment costs represented 67% of net profit - for every €3 in profit, approximately €2 went to payment processing.

When the team analyzed payment fees as a percentage of margin rather than revenue, the picture was even starker:

• Gross margin per transaction: €9.60 average (20% of €48 basket)
• Payment fee per transaction: €0.38 average (0.8% on €48 average basket)
• Payment fees consumed 4% of gross margin per transaction

For context: staff wages represented 12% of revenue. Rent represented 4%. Energy represented 2%. Payment fees were the third-largest expense category after COGS and staff.

The Card Payment Cost Breakdown

Under the EU Interchange Fee Regulation, consumer card interchange is capped at 0.2% (debit) and 0.3% (credit). But total merchant costs include interchange, scheme fees, and processor margin.

Euromarkt’s all-in payment costs:

• Debit cards: ~0.5% effective (interchange + scheme + processor)
• Credit cards: ~1.4% effective
• With transaction mix of 70% debit, 30% credit, the blended rate was approximately 0.8%

Total Payment Costs (2024):

• All-in card processing fees: €1.85M
• Chargeback fees: €36K
• PCI compliance: €7K annually
• Total: ~€1.92M (0.8% of revenue)

The finance team modeled the opportunity: shifting 20% of volume from 0.8% card fees to 0.5% A2A fees would save €144K annually in direct payment costs - plus faster settlement and lower chargebacks. The question was execution.

The Implementation Journey

Phase 1: Partner Selection (January 2025)

Euromarkt evaluated three A2A payment providers:

1. A QR-code-only provider focused on retail
2. A mobile wallet requiring app downloads
3. payware with seven payment initiation methods

Why payware won:

• QR codes for checkout lanes
• NFC for contactless (matching card tap experience)
• Payment links for online grocery orders
• No consumer app required (works with existing banking apps)
• Integration with existing payment terminals

The deciding factor: customer experience had to match card convenience. Asking customers to download an app would slow adoption. QR-only wouldn’t work for customers wanting tap-to-pay experience.

Phase 2: Pilot Store (February-March 2025)

Euromarkt launched A2A in a single store in Munich - their busiest location processing 2,800 transactions daily.

Week 1: QR Code Implementation

• QR codes displayed at checkout registers
• Staff trained on explaining A2A option to customers
• Transaction monitoring in real-time

Results: 1.2% adoption (34 transactions daily)

Week 2-3: Customer Feedback & Optimization

• Primary feedback: customers didn’t notice QR codes
• Solution: cashier verbal prompt + larger QR signage
• Adoption increased to 3.8% (106 transactions daily)

Week 4: NFC Terminal Update

• NFC terminals updated to support tap-to-pay A2A
• In-store signage explaining tap option
• Staff training on demonstrating tap payment

Results: Adoption jumped to 8.4% (235 transactions daily)

Key Insight: Customers wanted the same UX as card tap. QR codes worked but weren’t the primary driver. NFC tap-to-pay (initiating A2A instead of card) felt natural to customers already tapping cards/phones.

Phase 3: Full Rollout (April-June 2025)

April: 12 Stores Activated

• Focus on highest-volume locations
• Staff training completed before launch
• In-store promotional campaign: “Save money, pay directly from your bank”
• Results: 4.2% average adoption

May: Remaining 35 Stores Activated

• Full chain now A2A-enabled
• National marketing campaign launched
• Loyalty program incentive: bonus points for A2A payments
• Results: 6.1% average adoption

June: Optimization & Education

• Customer education videos played on in-store screens
• Receipt messaging highlighting A2A savings
• Staff incentive program for encouraging A2A adoption
• Results: 9.8% average adoption

Phase 4: Sustained Growth (July 2025-April 2026)

A2A adoption didn’t plateau - it continued growing month over month.

Adoption Curve:

• Month 3 (June 2025): 9.8%
• Month 6 (September 2025): 15.2%
• Month 9 (December 2025): 22.6%
• Month 12 (March 2026): 28.4%
• Month 14 (May 2026): 31.2%

What drove continued growth?

1. Network Effects: Customers seeing others use A2A increased confidence
2. Habit Formation: Once customers used A2A successfully, they continued
3. Loyalty Program: Bonus points incentivized trial and repeat usage
4. Word of Mouth: Cost-conscious customers told friends
5. Banking App Improvements: Banks improved UX based on merchant feedback

The Financial Impact: Combined Annual Economic Impact of €1.46M

Cost Comparison: Cards vs A2A

Before A2A (2024):

• Total transactions: 5M annually
• Average transaction: €48
• Card payment fees: €1.92M (0.8%)

After A2A (May 2026, Stabilized):

• Total transactions: 5.15M annually (3% growth)
• A2A adoption: 31.2%
• Card transactions: 3.54M (69%)
• A2A transactions: 1.61M (31%)

Cost Breakdown:

• Card fees: 3.54M × €47.30 avg × 0.8% = €1.34M
• A2A fees: 1.61M × €51.18 avg × 0.5% = €412K
• Total payment costs: €1.75M

Direct savings: €170K (€1.92M → €1.75M).

But Euromarkt also grew basket size for A2A transactions.

The Hidden Benefit: Basket Size Increase

The finance team noticed something unexpected in the data: A2A transactions had 8.2% higher average basket size.

• Average card transaction: €47.30
• Average A2A transaction: €51.18

Primary drivers (identified by Euromarkt’s finance team):

1. Customer selection effect: Customers who adopted A2A were more price-conscious and inclined toward larger, planned shopping trips
2. Spending limit removal: Customers with daily card limits had no A2A transfer limits, enabling larger single purchases

Revenue Impact:

• 1.61M A2A transactions × €51.18 = €82.4M
• If those had been card transactions @ €47.30 = €76.2M
• Additional revenue: €6.2M
• Additional gross margin (20%): €1.24M

The combined economic impact:

Direct Payment Cost Savings:

• 2024 payment costs: €1.92M
• 2026 payment costs: €1.75M
• Direct savings: €170K

Additional Gross Margin from Basket Size:

• €1.24M additional gross margin from higher A2A baskets

Combined direct economic impact: €1.41M annually (direct payment savings plus gross margin uplift from larger A2A baskets). Including chargeback savings (€36K) and reconciliation efficiency (€18K) brings the total to €1.46M annually. payware deployment data shows consistent basket size uplift across grocery partners, though the magnitude varies by customer demographics and market.

The Operational Benefits Beyond Cost Savings

Benefit 1: Instant Settlement Improves Cash Flow

Card payments settle in 2-3 business days. A2A payments on instant payment rails settle in seconds.

Cash Flow Impact:

• 31% of revenue (~€74.4M) now settles near-instantly
• Previous float time: 2.5 days average
• Cash flow acceleration: €510K average daily balance improvement

For a business operating on thin margins, instant access to revenue reduces working capital requirements and eliminates short-term financing needs.

Benefit 2: Reduced Chargebacks & Fraud

Card chargebacks cost Euromarkt €36K annually (0.15% of transactions). A2A payments have near-zero chargebacks due to Strong Customer Authentication.

Fraud & Chargeback Reduction:

• Card chargebacks: €36K (3.54M transactions)
• A2A chargebacks: near-zero (1.61M transactions, strong customer authentication)
• Savings: €35.6K annually

Benefit 3: Improved Reconciliation

Card payments require reconciliation across multiple batches, networks, and settlement times. A2A payments settle in real-time with complete transaction data.

Operational Efficiency:

• Accounting staff time on payment reconciliation reduced 40%
• Time saved: 8 hours weekly
• Cost savings: €18K annually (loaded cost of accounting staff)

Benefit 4: Customer Data & Insights

A2A transactions include complete bank transfer data - not just “transaction approved” but actual settlement confirmation with customer bank details (anonymized, compliant).

Euromarkt uses this data for:

• Better fraud detection (confirmed bank account reduces fraud risk)
• Loyalty program matching (linking transactions to customer accounts)
• Regional purchasing pattern analysis

The Customer Experience Reality

What Customers Said

Euromarkt surveyed 1,200 customers about payment preferences:

Positive Feedback (78% of A2A users):

• “Same convenience as tapping my card”
• “Feels more secure using my bank app”
• “I like saving the store money on fees” (when told about lower costs)
• “No more worrying about daily card limits”

Negative Feedback (22% of A2A users):

• “Slightly slower than card tap” (2-3 seconds)
• “My banking app isn’t optimized for this yet”
• “I didn’t understand what A2A was at first”

Customers Who Never Tried A2A (62% of total):

• “I didn’t notice the option” (43%)
• “Card payment works fine for me” (31%)
• “I don’t want to change my habits” (18%)
• “I’m concerned about security” (8%)

Key Insight: A2A isn’t replacing cards - it’s complementing them. Customers who value lower costs or prefer bank authentication use A2A. Customers satisfied with cards continue using cards. Both coexist successfully.

Staff Feedback

Cashiers reported:

• Initial complexity: First two weeks required explaining A2A to customers
• Normalization: After month 2, customers increasingly asked for A2A without prompting
• Transaction speed: A2A adds 2-3 seconds vs. card tap (but faster than cash)
• Customer satisfaction: A2A users expressed higher satisfaction (saving money resonates)

The Challenges & How They Overcame Them

Challenge 1: Customer Awareness

Problem: 70% of customers didn’t notice A2A was available.

Solutions:

• Verbal prompt from cashier: “Would you like to pay with card or directly from your bank?”
• In-store signage at checkout and entrance
• Receipt messaging highlighting A2A option
• Loyalty app notifications
• Local media coverage of Euromarkt’s cost-saving initiative

Result: Awareness increased from 30% to 82% over 6 months.

Challenge 2: Banking App UX Variability

Problem: Some customers’ banks had clunky A2A payment UX.

Solutions:

• Euromarkt couldn’t control banking apps directly
• Partnered with payware to share merchant feedback with banks
• Focused marketing on customers using banks with optimized A2A UX
• Banks improved UX based on merchant feedback over time

Result: Average A2A transaction time decreased from 18 seconds to 12 seconds over 12 months as banks optimized.

Challenge 3: Staff Training

Problem: 1,200+ cashiers across 47 stores needed training.

Solutions:

• Video training module (15 minutes)
• In-person training during shift meetings
• “A2A Champion” program - one trained staff member per store
• Quick reference cards at each register
• FAQ document for common customer questions

Result: 95% of staff felt confident explaining A2A after training.

Challenge 4: Technical Integration

Problem: Euromarkt’s POS system wasn’t designed for multiple payment method types.

Solutions:

• payware worked with Euromarkt’s POS vendor to build integration
• NFC terminal firmware update enabled A2A tap
• Transaction reporting extended to separate card vs. A2A
• Two weeks longer than planned implementation timeline

Result: Integration completed with minimal disruption to operations.

Lessons Learned: What Euromarkt Would Do Differently

Start Consumer Education Earlier

Euromarkt focused on technical implementation before customer awareness. In retrospect, starting customer education 4-6 weeks before launch would have accelerated adoption.

Loyalty Program Integration from Day One

Bonus loyalty points for A2A payments weren’t introduced until month 3. Earlier incentivization would have driven faster trial.

Regional Marketing Strategy

National marketing diluted impact. Regional campaigns focused on stores with highest early adoption would have created stronger local network effects.

Bank Partnership Outreach

Euromarkt waited for payware to coordinate with banks. Direct outreach to major banks serving their customer base could have accelerated banking app UX improvements.

The Competitive Advantage

How This Changed Euromarkt’s Market Position

Before A2A, Euromarkt competed primarily on location and product selection. Payment costs were an invisible but real constraint on pricing.

After A2A:

• Combined annual savings of €1.46M enabled a targeted 0.6% price reduction on 200 high-traffic products
• Marketing message: “We save on payment costs, you save on groceries”
• Customer satisfaction scores improved among price-conscious segments

Competitive Response:

• Two competing grocery chains announced A2A pilots within 6 months
• One competitor launched aggressive card-based loyalty program instead
• Euromarkt maintained 9-month first-mover advantage

Looking Forward: Next 12 Months

Expansion Plans

Online Grocery Integration:

• A2A payment links for online orders
• Target: 40% A2A adoption online (vs. 31% in-store)
• Hypothesis: online shoppers more price-conscious, higher A2A appeal

Subscription Delivery Service:

• Monthly grocery subscription with A2A payment
• Eliminates card expiration churn
• Target: 70% A2A adoption for subscriptions

Supplier Payment Optimization:

• Exploring A2A for B2B supplier payments
• Hypothesis: €2.4M annual supplier payments currently via card/wire could shift to lower-cost A2A

Geographic Expansion:

• 8 new stores planned for 2026-2027
• A2A built into launch plans from day one

The Bottom Line: From Expense to Advantage

Payment costs are typically viewed as unavoidable overhead - the cost of doing business. Euromarkt transformed payment costs into a strategic advantage.

The Numbers:

• €170K direct payment cost savings annually
• €1.24M additional gross margin from A2A basket size uplift
• 31% of transactions via A2A after 14 months
• €36K savings from reduced chargebacks
• €18K operational efficiency gains from simplified reconciliation
• Combined economic impact: €1.46M annually

The Strategic Outcome:

• Competitive differentiation through lower prices on high-traffic products
• Customer loyalty driven by cost transparency
• First-mover advantage in regional market
• Improved supplier negotiation position

For other grocery retailers: Euromarkt’s results demonstrate that A2A adoption in grocery delivers measurable savings within the first year, with manageable customer experience impact. As one partner institution’s CFO noted: “A2A transformed payment costs from our third-largest expense into a competitive advantage.” Results vary based on customer demographics, banking app penetration, and execution quality.