Apply a discount to an ecommerce event

Page Summary

outlined_flag

• Discounts can be applied to items in an ecommerce event by using the discount parameter.

• Do not use percentage discounts with the discount parameter; instead, provide the value of the discount.

• You can report on item-level discounts using the "Item coupon", "Order coupon", and "Item revenue" dimensions and metrics.

• To report on event-level discounts, you will need to create a custom metric.

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 a percentage for the discount parameter.

gtag.js Tag Manager

Example

An online store charges $6 per pair of socks. A customer purchases 3 pairs of socks with a $2 discount per pair. Here's the purchase event tag for this example:

gtag("event", "purchase", {
    transaction_id: "T_12345",
    coupon: "socksSale",
    value: 12.00, // value = quantity x sale price
    currency: "USD", // The currency of the value, discount, and price
    items: [
     {
      item_id: "SKU_12345",
      item_name: "Socks",
      discount: 2.00, // The discount per item
      price: 4.00, // The sale price is the per item list price (6.00) minus discount (2.00)
      quantity: 3 // The number of items sold
    },
]
});

Report on the discount

The following dimensions and metrics allow you to report on discount:

Handle event-level discounts

You can only report discounts at the item level. If you have an event-level discount, allocate the event-level discount to the items in the event, and in each item:

1. Add the discount parameter with the allocated unit discount value for the item.
2. Set the price to the unit price minus the allocated unit discount for the item.

You can also create a custom metric to report on event-level discounts.