An advantage of the subscription management module is that it allows you to globally change the rates applied in your subscription invoices.
You can adjust your rates, for example in case of price increase or change in the sales tax rate. For this, two methods are available:
Template level update
Just open and edit the template. All future invoices will adopt the new values.
Catalog level update
If your subscription invoices include products and services from your catalog, you can choose to use the original or current prices (the day of invoice generation).
This option is defined when creating the invoice and can be changed later on.