B2B Payment Methods in the Customer Portal: 5 Options for 2026

Why B2B payment methods are becoming a competitive issue in 2026

Anyone running a customer portal in B2B sales knows the situation: the buyer adds products to the cart, configures the order – and abandons the purchase because the preferred payment method is missing. What has long been standard in B2C is increasingly becoming an expectation in B2B commerce: flexible, digital B2B payment methods that fit the purchasing process.

With the launch of Shopware Payments in July 2026, the landscape has changed once again. Native payment solutions integrated directly into shop systems reduce technical complexity. At the same time, buyers' expectations are rising: they not only want to order on account, but also pay by direct debit, credit card, or Buy Now, Pay Later (BNPL).

This article shows which five payment options a B2B customer portal should offer in 2026, what benefits they bring for manufacturers and wholesalers, and what to consider during implementation.

The 5 most important B2B payment methods for your customer portal

1. Purchase on account – the classic with clear rules

Purchase on account remains the most widely used payment method in B2B. Buyers value the flexibility of inspecting goods first and paying within the agreed payment term. For manufacturers and wholesalers, this means trust in the customer's creditworthiness is a prerequisite.

Benefits for sellers:

• High acceptance among existing customers

• Low abandonment rate at checkout

• Fits established business processes (accounting, dunning)

Challenges:

• Liquidity risk due to long payment terms (often 30, 60, or 90 days)

• Effort for credit checks and receivables management

• Default risk with new customers or international markets

Implementation in the customer portal: Purchase on account should be linked to customer groups and credit limits. Modern ERP systems provide real-time information on open receivables and payment terms. Shopware B2B editions offer native interfaces that map permission management and credit checks directly in the checkout.

2. SEPA direct debit – predictability for both sides

SEPA direct debit is gaining importance in B2B commerce because it makes incoming payments more predictable. The amount is automatically collected from the buyer's account – after prior mandate approval. This reduces the effort in receivables management and accelerates cash flow.

Benefits for sellers:

• Faster payment receipt than with purchase on account

• Fewer manual payment reconciliations in the back office

• Lower default risk through automated collection

Benefits for buyers:

• No manual bank transfer required

• Automated payment processing saves time

• Full transparency through the SEPA mandate

Implementation in the customer portal: Integrating SEPA direct debit requires a payment service provider (PSP) connection or a native solution like Shopware Payments. Important: the SEPA mandate must be stored in a legally compliant way and be accessible in the customer account. The system should also automatically record chargebacks and report them to receivables management.

3. Credit card payment – for international customers and urgent orders

Credit card payment was long considered a B2C payment method. In B2B, however, it is becoming increasingly relevant – especially for international customers, smaller orders, or urgent purchases. Buyers appreciate the speed, sellers benefit from instant payment confirmation.

Benefits for sellers:

• Immediate payment guarantee (upon successful authorization)

• No credit check required

• Ideal for new customers or unfamiliar markets

Benefits for buyers:

• Fast processing, even outside business hours

• Use of corporate credit cards with integrated cost centers

• International acceptance

Challenges:

• Transaction fees (usually 1.5–3% of the order value)

• Higher requirements for data protection and PCI DSS compliance

• Risk of chargebacks (reversals by the cardholder)

Implementation in the customer portal: Modern PSPs such as Shopware Payments, Mollie, or Adyen offer ready-made integrations for common shop systems. What matters is the connection to the ERP system so that incoming payments are booked automatically and orders are released.

4. Buy Now, Pay Later (BNPL) – flexibility for the mid-market

BNPL solutions are well known from B2C. In the B2B segment, specialized providers such as Billie, Mondu, or Hokodo are increasingly establishing themselves. They handle the credit check, grant the buyer flexible payment terms, and pay the seller immediately.

Benefits for sellers:

• Immediate payment receipt despite payment terms for the customer

• Outsourcing of credit checks and receivables management

• Higher conversion because buyers can order more flexibly

Benefits for buyers:

• Payment terms without negotiating with the supplier

• No credit line with the supplier required

• Transparent conditions (e.g. 30 days payment-free, then installments possible)

Implementation in the customer portal: BNPL providers offer APIs or plugins for common shop systems. Integration usually takes place via the PSP or directly. Important: the BNPL provider checks creditworthiness in real time – this requires a stable connection and clear fallback solutions if the check fails.

5. Payment directly in the customer portal – self-service for returning customers

Many B2B customer portals now offer more than just ordering functions: buyers can view open invoices and delivery notes and trigger payments directly in the portal. This self-service function significantly reduces the workload of the back office.

Benefits for sellers:

• Fewer queries about open items

• Faster incoming payments through active payment requests

• Automated matching of payments to invoices

Benefits for buyers:

• Full transparency of open receivables

• Payment possible at any time, without contacting the supplier

• Automatic update of the credit limit after payment

Implementation in the customer portal: This function requires a real-time connection to the ERP system so that open items are displayed correctly. Payments can be triggered by credit card, direct debit, or instant bank transfer. Shopware B2B editions offer native functions here that can be combined with PIM systems and ERP solutions such as SAP, Microsoft Dynamics, or JTL.

Technical integration: what manufacturers and wholesalers should consider

Selecting the right B2B payment methods is only the first step. What matters is the technical implementation – because only when payment data flows in real time between shop, PSP, and ERP can manual effort be reduced.

Key requirements:

• ERP integration: Incoming payments must be booked automatically in the ERP to avoid duplicate work.

• Permission management: Not every buyer should be allowed to use all payment methods – approval processes and credit limits must be mapped in the system.

• Real-time credit checks: With BNPL or purchase on account, creditworthiness should be checked directly at checkout to minimize defaults.

• Transparency for the customer: Buyers expect clear information on payment terms, fees, and available credit – directly in the customer portal.

Shopware Payments offers an advantage here: the native integration reduces the effort for interfaces and enables central management of all payment methods. For more complex requirements (e.g. multiple ERP systems, international markets), working with specialized integration partners is recommended.

Common mistakes when introducing new B2B payment methods

Lack of coordination with accounting

New payment methods sound attractive to sales – but if accounting has to match incoming payments manually, the result is more effort, not less. Before introduction, processes should be clearly defined and interfaces tested.

No differentiation by customer group

Not every customer should be able to use every payment method. New customers need different options than long-standing existing customers with high credit limits. Missing rules lead to payment defaults or unnecessary queries.

Unclear communication at checkout

If buyers do not understand why a payment method is unavailable or which conditions apply, they abandon the purchase. Clear notices at checkout ("Your credit limit has been reached – please choose another payment method") reduce frustration and queries.

Practical example: how a mid-sized manufacturer reduced payment abandonment

A typical scenario: a manufacturer of technical components with 150 employees introduced a customer portal in 2025 – initially only with purchase on account. The checkout abandonment rate was 18%. After introducing SEPA direct debit and BNPL, it dropped to 7%. At the same time, the average payment period shortened from 45 to 28 days.

The decisive factor: the integration of the payment methods did not happen in isolation, but as part of a comprehensive digitalization of sales processes – including ERP connection, product data management, and automated receivables management.

Outlook: which payment methods will become relevant in 2027 and beyond

The development in B2B payments is dynamic. In addition to the five options mentioned, further trends are emerging:

• Request to Pay (R2P): A European standard that enables companies to send payment requests directly to the buyer's bank account – with immediate confirmation or rejection.

• Cryptocurrencies in B2B: Still a niche, but increasingly interesting for international transactions with long payment terms.

• Embedded finance: Payment service providers are increasingly offering integrated financing solutions – e.g. factoring or supplier credit directly at checkout.

For manufacturers and wholesalers, the rule is: those who lay the groundwork today – clean ERP integration, a flexible customer portal, and clear processes – can add new payment methods later with manageable effort.

Checklist: introducing B2B payment methods successfully

• Analyze your target group: Which payment methods do your customers expect? Do requirements differ by region, industry, or company size?

• Define processes: How are incoming payments booked? Who checks creditworthiness? Which approval processes apply?

• Ensure ERP integration: Payment data must flow automatically into the ERP – without manual rework.

• Differentiate customer groups: Not every customer should be able to use every payment method. Define clear rules.

• Transparency at checkout: Buyers must understand why a payment method is available (or not) and which conditions apply.

• Test before go-live: Simulate different scenarios (payment default, chargeback, credit limit exceeded) and check whether all systems respond correctly.

• Train your teams: Sales, back office, and accounting need to know how the new payment methods work and which processes apply.

Conclusion: using B2B payment methods as a competitive advantage

The expectations of B2B buyers have changed. Those who only offer classic purchase on account in 2026 risk abandoned purchases and lose market share to competitors with more flexible payment options.

The five B2B payment methods presented – purchase on account, SEPA direct debit, credit card, BNPL, and payment in the customer portal – cover the most important requirements. The decisive factor is the technical implementation: only when payment data flows automatically between shop, PSP, and ERP can manual effort be reduced and incoming payments accelerated.

With the launch of Shopware Payments in July 2026, integrating native payment solutions has become easier. Manufacturers and wholesalers who lay the groundwork now can respond flexibly to future requirements – while relieving the back office, improving liquidity, and increasing customer satisfaction.