Freemium SaaS Wordpress CMS + Blog Theme I

The credit card / billing page is all HTML , Software as a Service (SaaS) billing is a highly complex paradigm that requires processing credit card payments, handling refunds, managing subscriptions and users, and logging information for reporting and accounting.

FORTUNATELY , there are many excellent 3rd party systems for this such as Chargify.com or https://www.paypal.com/pdn-recurring to implement recurring billing for your web application, hosting, or whatever service it is you provide.