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Plug-ins and Extensions

InterPayments has created a series of plug-ins and extensions that provide access to the InterPayments surcharging solution to merchants that are using any of the commercially available shopping carts listed below.

The plugin/extension embeds a line item in the shopping cart at checkout labeled “Transaction Fee”. When a customer selects to use a credit card for payment, the surcharging solution will determine if the transaction can be surcharged and if so it will provide the correct surcharge fee to be added to the transaction. The surcharge is added to the transaction total and the new total amount is processed through the normal payment channels.

Currently InterPayments is supporting plug-ins and extensions for the following shopping carts:

Magento 1

Magento 2




Shopify Plus

Chrome Extension for NMI Virtual Terminal