Practice Area

Payment charge Magento 2 extension by CynoInfotech helps store admin to add payment method process fees in product order subtotal. Magento 2 payment charge helps Store owner can set payment method process fees from backend on any selecting payment methods as a fixed price or as a percentage price.

I advise you to study about the advcash payment system. Advcash is an online payment processing system for wide categories of users (individuals, freelancers, webmasters, online businesses). More here https://askwallet.io/advcash