While we can charge a customer's credit card for an individual customer invoice, we cannot charge a customer's credit card for more than one invoice. In our business, it is common for a client to phone up and say, "Here is my credit card, please charge the invoices that are on my account." There might be 2, there could be 10. But as it is, from chatting with Zoho Books support, there is no way to do this.

They suggested we set up a customer portal and insist the customer log in there and process their own payments. No, we have clients that don't want to do that. Giving credit card details over the phone should be enough.

Does anyone have a workaround for this?