We use a third party payment processor, Stripe, for all payments. 2CO Host does not store credit card details and instead relies on Stripe for this. While checking out, customer will have option to save card within their account on 2CO Host or Not. If they save, all upcoming invoices will be charged automatically. They can remove the card from account anytime. We can only validate/see last 4 digits of customer credit card and expiry date.