Kauf auf Rechnung for WHMCS
Kauf auf Rechnung is classic Swiss invoice payment with a QR reference. Combined with WHMCS, the hosting and billing system for providers and agencies, you offer your customers exactly the payment option they expect at checkout. With zahls.ch you connect the two without any coding: create an account, set up the integration, activate Kauf auf Rechnung. It then appears directly in the checkout of your WHMCS store, and all transactions are gathered clearly in your dashboard.
WHMCS is the standard software for hosting providers and managed service providers: client management, invoices, domains, and subscriptions run centrally in one system.
Via the BlueRabbit partner module you connect WHMCS to zahls.ch and accept TWINT, cards, PostFinance Pay, and other methods at checkout – including callbacks for automatic payment matching and refunds.
The module supports multiple currencies and languages and is compatible with WHMCS 8.x and 9.x. You get the licence and support directly from partner BlueRabbit; you activate payment methods in your zahls.ch account.
Suitable for hosting companies, agencies, and MSPs that want to offer Swiss payment methods in their WHMCS billing.
Features
- Partner module by BlueRabbit
- TWINT, cards and PostFinance in the WHMCS checkout
- Automatic callbacks and refunds
- Multi-currency and multi-language support
- Compatible with WHMCS 8.x and 9.x
Benefits
- Trust through familiar invoice payment
- Fast activation without coding skills
- Stable API connection with automatic status updates
- Hosting invoices with Swiss payment methods
Use cases
Kauf auf Rechnung for WHMCS pays off in many scenarios:
- Customers and companies that deliberately pay by invoice
- Stores that want to reduce checkout abandonment with familiar payment methods
- Merchants who want to manage transactions, refunds, and payouts in one place
Setup
How to set up Kauf auf Rechnung in WHMCS
- Create a zahls.ch account and complete verification.
- Install the BlueRabbit partner module in WHMCS, enter your zahls.ch API keys, and activate the payment methods.
- Enter the API keys from your zahls.ch dashboard in the integration settings.
- Activate Kauf auf Rechnung as a payment method and save the configuration.
- Run a test payment in test mode, then switch your store live.
FAQ
Do I need a separate contract for Kauf auf Rechnung?
No. You activate Kauf auf Rechnung in your zahls.ch account – without a separate acquiring contract.
How long does the setup in WHMCS take?
Usually less than an hour: install the integration, enter the API keys, activate the payment method, and test.
What does using Kauf auf Rechnung cost?
Transaction fees depend on your chosen zahls.ch plan. There are no setup fees for the integration itself.