You can apply a discount to an item in an ecommerce event by adding the
discount parameter with the value of the discount. Don't use the percentage
discount with the discount parameter.
Example
An online store charges $6 per pair of socks. A customer purchases 3 pairs of
socks with a $2 discount per pair. In this example, the purchase event tag
would look like the following:
Report on the discount
The following dimensions and metrics allow you to report on discount:
| Dimension or metric | Description |
|---|---|
| Item coupon | The coupon used to purchase an item (e.g., a product you sell). |
| Order coupon | The coupon name or code that you specify for discounted items. |
| Item revenue | The total revenue from items only, excluding tax and shipping. Item
revenue = quantity x price. |
If you want to apply event-level discounts, you must create your own custom metric to report on event-level discounts.