If you are subscribed for a service, that includes tax every month, you can make recurring invoice, which you can send periodically every month to predefined service. To create it,  first you need to log in My-dox, after that to choose Documents, and from the submenu to choose Add recurring document., and then to select Invoice.







You will open a new window, where you must enter the additional information, like the number of the invoice, date, category, to attach a file, and to set the reccuring period (from what date to what date, to be weekly, annually and etc).