Options for discount of regular service rate are as follows:
Tariff rate discount
You may set a discount while editing/adding a tariff. The options are: No discount, Fixed discount (in currency per month), or Percentage discount (from monthly rate). If discount is selected, enter Discount name (invoice description), or its duration (Discount from-to. This settings will be visible at next issued invoice, if you don´t modify it back. So it is a regular discount from a predefined tariff price.
Pending item
This type of discount is used mostly as one-time discount. Simply enter a negative amount to a pending item.
Then issue an invoice where you include the pending item, or just wait until next invoicing when it is done automatically.
Use Invoice from date to postpone invoicing of the item, or define more pending items with different Invoice from date.As a result, discount amount is deducted from basic tariff price reflecting it to the invoice amount.
Edit invoicing period
Check those un-invoiced months which you wish to exclude from future invoicing. It is a simple and fast way to provide a client with free months’ period without touching setup of a tariff or service.