02.02.2026
Implementing a payment solution into your online shop sounds like a bit of a hassle – but with PostFinance Checkout, it’s easier than you might think. This guide shows you how to set up the solution in eight steps and get the right support from the start.
PostFinance Checkout provides retailers with a payment platform that grows with the requirements of their online business. It supports the common payment methods, can be combined with eBill and QR-bill and also offers interfaces to many shop systems and accounting programmes. Numerous configuration options along with comprehensive support ensure smooth and secure operation.
Alongside the many advantages the payment solution offers, you can also plan its implementation: following registration and approval by the acceptance partners, PostFinance Checkout will be ready for operation in around two weeks – secure, verified and tailored to the needs of the Swiss market.
PostFinance Checkout implementation begins with creating a user account. Access is set up on the product page via “Test it now”. After entering your name, e-mail address and password, the test account is activated through a confirmation e-mail.
Those wanting to use PostFinance Checkout productively can re-register for the full version or switch their test account to a productive account. All details and contract documents will be provided after this. The test environment can still be used, but settings aren’t automatically adopted.
The appropriate model must be chosen once the company data has been entered. PostFinance Checkout is available as a subscription in three models:
The choice should be based on the shop’s long-term requirements. Adjustments can be made later, but it’s advisable to choose carefully in advance to avoid unnecessary changes during ongoing operations.
You then have access to the dashboard, which serves as a central working tool. To set up the payment methods, in the “Set up your payment system” field click on the “Enable E-Commerce payments” button.
The selection and configuration of payment methods depend on the PostFinance Checkout model selected:
The activated payment methods can be modified at any time in the dashboard. Retailers should consciously tailor their selection to their customers’ needs: the more well-known payment methods available, the lower the likelihood the customer cancels their purchase. A wide range of services also strengthens an online shop’s competitiveness.
You can integrate PostFinance Checkout into your online shop via the “Connect your app or shopping cart” button in the dashboard. Connecting to your shop system is technically straightforward, but the process varies depending on the platform. For example:
You can find a guide on how to correctly connect PostFinance Checkout for each individual shop system. Select your platform and follow the instructions given in the guide.
The integration establishes the connection between your shop and PostFinance Checkout. From this point on, transactions can be processed directly and viewed in the dashboard. Correct entry of the access data is essential, as errors at this point can lead to disruptions in the payment process.
Test transactions should be carried out before the system is activated for customers. These simulate the entire payment process, from selecting a payment method through to authorization and order confirmation.
Test transactions ensure that all interfaces work correctly, as they enable any configuration errors to be identified and resolved before go-live. The dashboard displays each test case in detail, including all parameters and status messages. This gives retailers the assurance that the payment process works under realistic conditions before customers access the shop.
Contracts with the relevant acceptance partners (acquirers) are required to ensure payments can be processed during live operation. These take care of the technical and financial processing of transactions between customers, financial institutions and the shop.
The procedure varies depending on the PostFinance Checkout model and partner selected:
Each provider has its own requirements regarding the documents to be submitted. These may include extracts from the commercial register, proof of identity or other business documents.
As checks and approval are carried out by external partners, this process may take several working days, depending on the provider. It’s advisable to plan for this period in good time so as not to delay the planned go-live. Online shop payments can only be accepted and invoiced once the retailer has been approved.
Detailed company information is required in order to run the full version. This depends on the package and includes information such as:
This information isn’t only relevant for approval in the system, but it also helps the acceptance partners (acquirers) who process the transactions from a technical and legal perspective. Incomplete or incorrect data may delay contract verification and delay the go-live. It’s therefore advisable to have all documents – such as an extract from the commercial register or proof of identity – ready before entering them.
Once the contract has been successfully concluded and test transactions successfully carried out, the system is activated for live operation. From this point on, customers will be able to make payments using all the methods selected, and invoicing will be carried out via the partners on file.
There are also enhancements available that expand the PostFinance Checkout range of functions:
These options ensure that PostFinance Checkout can be used not only as a payment module, but also as a strategic tool in online retail.
Register now for PostFinance Checkout All-in-One. You can test the e-payment solution including payment simulation and plug-in free of charge, or request advice.
The technical integration can be completed in just a few hours. However, the total time taken depends on how long it takes acceptance partners to review the contract documents. As this process takes at least ten working days, merchants should expect a lead time of two-to-three weeks from the start. This avoids delays to the planned start.
No. You don’t need a PostFinance account to use PostFinance Checkout. Billing can instead be carried out using a credit card. However, a PostFinance account is advantageous if all fees and income are to be processed centrally via one account.
PostFinance Checkout supports all common platforms. Specific plug-ins or modules are available for solutions such as WooCommerce, Shopify, Wix and PepperShop. Individual integrations are also possible. Detailed instructions guide retailers through the relevant set-up so that connection is possible even without in-depth technical knowledge.
Yes. The entire process can be trialled using the test version. This allows retailers to configure payment methods, simulate transactions and get to know how the dashboard works. The test version is therefore a suitable introduction before the solution is used in live operation.
