The ultimate guide to omnichannel payments

Unify your online and in-store sales with omnichannel payments to reduce admin, improve customer experience, and scale.

Unify your online and in-store sales with omnichannel payments to reduce admin, improve customer experience, and scale.

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You are already selling online, in-store, and on mobile. But if those channels operate in silos, you’re losing hours (and revenue) to manual reconciliation and disconnected data.

Payments are the connective tissue of your business. Unifying them is the fastest way to streamline your finances and remove friction from the customer journey. You aren't alone in this shift: A recent Deloitte study found that almost half of retailers (46%) are focusing on enhancing their omnichannel infrastructure.

In this guide, we break down how omnichannel payments actually work, why they’re a strategic advantage for European expansion, and how to choose a provider that creates seamless cross-channel journeys while cutting your manual work.

What are omnichannel payments?

Omnichannel payments represent a shift from ‘selling in multiple places’ to creating a single, fluid ecosystem for your customers and your business. 

For your customers, it means a consistent identity and payment experience across every device and storefront.  

And for your business, it means moving from data silos, where you manage two separate systems, to what we call a 'single source of truth.' By unifying these touchpoints, you gain centralised reporting and automated reconciliation, enabling you to track performance across your entire ecosystem from a single dashboard.

Key features of an omnichannel payment platform

A true omnichannel payment platform acts as the central nervous system for your business. Key features include:

  • Unified reporting: Access all sales data across web and physical stores in one place.

  • Cross-channel recognition: Identify a customer via their payment token regardless of the touchpoint.

  • Centralised terminal management: Manage physical payment hardware through the same portal as your ecommerce gateway.

  • Flexible refund logic: Allow a customer to buy online and return the item in-store, or arrange a partial refund, with a single click.

Omnichannel vs unified commerce

While these terms are often used interchangeably, there is a subtle yet vital distinction between them.

Omnichannel focuses on the customer’s front-end experience. A high-visibility example of this is McDonald’s. Whether you order from a kiosk in the restaurant, a desktop, or the mobile app, your experience is identical (Interestingly, McDonald’s vision is to position itself as ‘the leading omnichannel restaurant in all their markets’).

Unified commerce is the backend reality that makes this possible by using a single platform to connect your inventory, customer data, and payments into one system.

To put it simply:

  • Omnichannel: All customer-facing channels are connected to provide a consistent, fluid experience.

  • Unified commerce: All backend systems are connected to give your finance, operations, and marketing teams the chance to gain huge efficiencies.

Without unified commerce, omnichannel is often just a facade that requires your team to manually bridge gaps between systems.

Omnichannel payment vs multichannel payment

If omnichannel is about connection, multichannel is the opposite. In a multichannel setup, you may have several sales channels, but because they do not communicate with one another, they operate in silos.

For example, you might accept payments online and in-store, but the systems operate entirely separately.

  • The multichannel struggle: You use different providers for your webshop and your physical card machines. This results in fragmented data, manual workarounds, and complex end-of-month reconciliation.

  • The unified advantage: You use one provider for everything. Because the data is unified, if a customer buys a pair of shoes online and wants to return them in-store, your staff can instantly locate the transaction and process the refund on the spot.

By moving away from silos, you’re improving the customer experience, while also gaining the operational clarity needed to scale without adding administrative overhead.

Ready to connect your payment channels?

You can explore our Omnichannel solution and learn how to deliver a better customer experience.

How does omnichannel payment processing work?

The process simplifies modern retail by routing everything through a single entry point.

  1. Transaction initiation: A customer pays via your website, a mobile app, a physical payment terminal, or a QR code.

  2. Centralised payment gateway: Instead of juggling multiple systems, all data flows through one unified gateway.

  3. Cross-channel tokenisation: The system uses secure, unique identifiers – such as payment tokens or hashed customer credentials – to represent sensitive data. This allows you to recognise a returning customer in-store through their digital wallet, card data or bank-backed payment (like Wero), even if their previous purchase was made via a desktop browser

  4. Real-time data synchronisation: The system updates your inventory, loyalty profiles, and transaction history instantly.

  5. Unified backend processing: The transaction moves to the acquiring bank. Because the backend is unified, you can manage disputes or refunds from a single dashboard.

  6. Consolidated reporting: You get a 360-degree view of your financial health without having to manually merge spreadsheets.

Omnichannel payment benefits

When you’re scaling quickly, disconnected systems are your biggest enemy. You may have launched new locations or opened new markets, but if your payments aren’t in sync, you’re creating friction across your entire operation.

Without a unified setup, you will almost certainly face three core problems:

  • Customer frustration: Systems that don’t sync lead to broken experiences, such as being unable to return a web order to a store.

  • Wasted time: Your finance team loses hours or days reconciling transactions from separate systems.

  • Blind spots: You lack real-time visibility into which channels are actually driving revenue, and which need some extra attention.

A single, unified payment setup fixes the engine of your business. Here’s how it changes your daily operations:

1. Create a simpler customer journey

You allow customers to shop exactly how they want, and by providing consistent experiences and reliable payment options across every touchpoint, you build the kind of trust that drives repeat business.

2. Make operations run smoother

Connection equals speed. When your systems talk to each other, reconciliation becomes a background task rather than a manual nightmare. Refunds are unified, and end-of-day reporting makes operations run more smoothly.

3. Get clearer insights

You can see performance by channel, location, and market in real time in our unified payment dashboard. This ‘single source of truth’ allows you to make smarter, data-driven decisions about where to invest your resources.

4. Scale without the chaos

Whether you’re adding new stores or going cross-border, the right infrastructure allows you to grow without rebuilding your entire setup from scratch. You simply plug new channels into your existing ecosystem.

5. Consolidate your stack

Instead of juggling separate vendors for your online gateway, physical payment terminals, and mobile payments, you work with a single partner. This replaces the patchwork of different contracts and support teams with a single, streamlined relationship, so you can run all your payment needs from a single API, reducing the risk of system failures caused by platforms not syncing with each other.

How businesses benefit from omnichannel payments

At Mollie, we work with hundreds of thousands of European businesses to help them simplify payments and unify their customer experience. Here’s how a couple of them are doing it:

Odette Lunettes

As Odette Lunettes grew from a local Belgian eyewear startup to a global brand spanning 750 opticians across 30 countries and five physical boutiques, their payment infrastructure couldn’t keep pace. Each store operated with separate bank accounts and payment terminals, creating fragmented payment streams that required manual reconciliation due to the lack of a unified payment solution to connect online and offline channels.

The breakthrough came in 2024 when Odette Lunettes implemented Mollie's omnichannel payment solution, integrating Mollie terminals in their physical stores with their existing online payment setup. Now, whether a customer purchases glasses on a smartphone in Athens or at their flagship Antwerp boutique, every transaction feeds into a single unified system, eliminating the admin burden and unifying customer data across all touchpoints.

BBQ Experience Centre

BBQ Experience Centre has grown into a thriving omnichannel enterprise with three locations, a flourishing online store, and nearly fourteen million euros in annual turnover. However, as they expanded into physical retail, they faced a critical challenge: their ecommerce platform offered rich insights into consumer behaviour, while physical store purchases remained relatively anonymous.

The solution came through Mollie’s unified omnichannel payment system. By integrating online and offline payment streams into a single dashboard, BBQ Experience Centre gained comprehensive customer insights by linking in-store payments directly to inventory orders, enabling BBQ Experience Centre to deliver exceptional, seamless shopping experiences whether customers shop online or in-store.

X20

The Belgian bathroom specialist X2O faced a significant hurdle in their mission to become a leading European player: a fragmented payment landscape. With separate providers for their webshops and 60+ showrooms across Belgium, the Netherlands, Germany, and France, the company was forced to manage two systems, leading to manual consolidation and unnecessary double work for its finance department.

By switching to Mollie’s unified platform, X2O integrated more than 150 in-store terminals with their digital sales channels in just a few weeks. This transition transformed their operational efficiency, turning reconciliation tasks that once took days into a process completed in minutes. Today, X2O has a single, real-time overview of every transaction across Europe, allowing them to scale into new markets without adding technical complexity.

Choose the right omnichannel payment provider

Choosing an omnichannel payment partner is a strategic decision that impacts your bottom line and operations. So making the right choice is vital. Especially in Europe, where each individual market has its own nuances. 

Here are a few things to look out for: 

  1. Evaluate local expertise: Ensure the provider supports the preferred payment methods in the markets that you operate.

  2. Check integration depth: Does the platform offer pre-built integrations with your existing tech stack (e.g., Shopify, Magento, or your ERP)?

  3. Analyse the reporting: Is the dashboard intuitive? Can you easily review key metrics such as channel performance, payment method popularity, and cross-channel trends?

  4. Look for modularity: Choose a provider with a modular, API-first platform that connects to your existing tools (like Odoo, Shopify, or WooCommerce) rather than replacing them.

  5. Review the fee structure: Avoid hidden costs and look for transparent pricing that scales with you.

Top omnichannel payment providers

When it comes to omnichannel payments, you need to find a partner that matches your size and ambition. Here’s a quick breakdown of some of the best options:

  • Adyen: A robust, enterprise-level solution known for its worldwide reach.

  • Stripe: The global giant, popular for its developer-friendly API and extensive online tools.

  • Buckaroo: A provider that offers a consolidated platform for local payment methods and credit management. 

  • Fiserv (Carat): Built for large-scale global brands, offering stability and security, but less accessible for smaller businesses.

  • Viva.com (formerly Viva Wallet): Offers a model where merchants can offset costs by using their business debit card for expenses.

  • Mollie: Designed specifically for European growth, balancing powerful tech with a human touch and local payment expertise.

Once you’ve decided on your omnichannel payment partner, it’s time for implementation.

Five steps to implement omnichannel payments

Your specific roadmap will be determined by your goals and the payment partner you choose. 

However, to give you an idea of what to expect, here’s a practical, five-step roadmap for implementing omnichannel payments.

Step 1. Audit your current tech stack

Before adding new tools, you need to understand where the current friction lives. Map out every touchpoint where a customer pays you, from your webshop checkout to the card machines in your physical stores.

  • The goal: Identify where data is siloed. For example, are your online sales records connected to your in-store inventory?

  • Pro tip: Look for duplicate vendors. Juggling multiple providers often leads to the very fragmentation you are trying to solve.

Step 2. Centralise your customer and inventory data

Your backend needs to be connected in real time. When a customer buys the last item on your website, your in-store staff should see that update instantly to prevent overselling.

  • The goal: Use a central database (like a CRM or integrated ERP) that bundles information from every channel.

  • The result: You gain a 360-degree view of your business, making it easier to personalise experiences and manage stock efficiently.

Step 3. Prioritise your customer journeys

Don’t try to change everything on day one. Instead, choose one high-impact transaction to test your new unified logic.

  • The example: Start with ‘buy online, return in-store.’ It’s one of the most requested features from modern shoppers, and a perfect way to test if your online payments and offline systems are truly connected.

  • The benefit: Starting small allows you to iron out any kinks in a controlled environment before rolling out the full strategy.

Step 4. Train staff on unified payment systems

Your team is the face of your omnichannel experience. They need to feel confident using the new system in front of customers.

  • The approach: Use practical training in a low-pressure environment, such as a sandbox or dummy account. Let them practice processing cross-channel refunds or looking up an online order on a physical terminal.

  • The value: Confident staff provide a professional first impression and help build the customer loyalty that omnichannel is designed to foster.

Step 5. Scalability and optimisation

Once your systems are talking to each other, use the data they generate to grow. Your unified dashboard will show you exactly which channels are performing best and where you can cut costs.

  1. The goal: Use real-time analytics to spot trends, such as peak sales hours or high-performing local payment methods.

  2. The future: With a stable foundation in place, you can easily plug in new features, like biometric checkouts or Wero, as they become standard.

This process can vary by industry, as some have specific requirements.

Omnichannel payments in 2026 and beyond

If you’re considering upgrading your payment process, then it’s a good idea to take a step back and look at some of the bigger-picture innovations on the horizon.

The future of commerce is becoming more automated, personal, and invisible. For European businesses, this means participating in a wider digital ecosystem.

Agentic commerce: The rise of AI buyers

Agentic commerce has reached a tipping point where autonomous AI agents can anticipate needs, compare options, and execute transactions on a customer’s behalf.

  • The shift: Instead of a person clicking through your website, an AI agent can execute the purchase based on pre-set goals and constraints.

  • How it might impact omnichannel: Your inventory and pricing must be real-time and machine-readable so an agent can see your stock as easily as a human customer in-store.

Biometric checkouts

People are quickly adapting to making payments with their face, and biometric payments, which tie authorisation to the individual rather than a physical card or phone, are becoming the retail standard.

  • The shift: Sophisticated computer vision and scanners are reducing checkout friction by up to 40%, by providing a ‘touchless’ experience.

  • How it might impact omnichannel: Biometrics act as a universal key. A customer can use their face to pay in-store, and because that biometric profile is linked to their unified account, your system instantly applies their online loyalty points and email preferences to the in-store transaction.

Wero: Europe’s unified payment method

Wero is a pan-European initiative designed to establish a continent-wide, independent, sovereign payment identity.

  • The shift: Wero is replacing a patchwork of local systems (such as iDEAL | Wero in the Netherlands and Payconiq in Belgium) with a single bank-backed digital wallet that follows the customer across borders.

  • How it might impact omnichannel: Wero is omnichannel by design, providing a single ‘payment identity’ that remains consistent whether a customer is shopping in your mobile app or visiting a physical store. Because the wallet is linked directly to their bank account, it provides a consistent checkout experience at every touchpoint, regardless of the interface.

You can read more in our guide: What is Wero?

How Mollie supports omnichannel payment

We grew alongside our customers. As they expanded, the feedback was clear: juggling two separate systems for online and in-person payments was a bottleneck.

We simplified the process. Whether your customer is scanning a QR code, tapping a card in-store, or checking out online, every transaction flows through one system.

The Mollie Dashboard: Your single source of truth

Your Mollie Dashboard lets you track performance by channel, location, or market in real time, so you can see what’s working without needing a team of analysts.

  • Unified reporting: Manage all online and in-person transactions in one place to make reconciliation a background task.

  • Instant actions: Send refunds, ship orders, and process cross-channel returns at the touch of a button.

  • Activate payment methods: Open up new markets by enabling over 30 global and local payment methods with a single click in your dashboard.

In-person payments made simple

Our in-person payment solutions are designed to plug directly into your existing infrastructure.

  • Mollie terminals: We offer both mobile readers for pop-ups and stationary terminals for high-volume retail. All devices connect seamlessly to the dashboard for uniform settlement.

  • Mollie Tap: The Mollie Tap app allows you to accept contactless payments on iPhone or Android devices – from smartphones and tablets to professional stock scanners and restaurant ordering handhelds.

  • Unified logic: Because your POS and ecommerce are connected, your team can process a webshop return in-store instantly, with no manual workarounds.

Local expertise on a global scale

We provide native support for the local payment methods European shoppers trust. From Bizum and Bancontact to the current transition from iDEAL to Wero, we handle the technical complexity so you can focus on your customers.

Conclusion

Omnichannel payments are the standard for any European business that wants to grow without the administrative headache.

By unifying your backend, you deliver a better customer experience and gain operational clarity to scale with confidence.

Ready to connect your payment channels? You can explore our Omnichannel solution here.  

FAQs about omnichannel payments

Is it difficult to integrate with my existing systems?
No. You can connect Mollie to your current setup using our ready-made plugins (like Shopify, WooCommerce, or Odoo) or build a custom fit with our API.

Can I track all my transactions in real time with Mollie?
Yes. The Mollie Dashboard provides a single, real-time view of every transaction, whether it happened at a physical terminal or through your online checkout.

What happens if I want to expand to another country?
We offer multi-country and multi-currency support from day one. You can accept local payment methods across Europe and manage everything through your existing account.

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MollieGrowthThe ultimate guide to omnichannel payments
MollieGrowthThe ultimate guide to omnichannel payments
MollieGrowthThe ultimate guide to omnichannel payments
MollieGrowthThe ultimate guide to omnichannel payments