Items.price + Items.discount includes VAT

[jochemep]

Items.price includes VAT. According to this devguide, that is incorrect: https://developers.google.com/analytics/devguides/collection/ga4/reference/events?client_type=gtag#purchase

Price should be:

The monetary unit price of the item, in units of the specified currency parameter.
If a discount applies to the item, set price to the discounted unit price and specify the unit price discount in the discount parameter.

You can see this in the example below:

gtag("event", "purchase", { transaction_id: "T_12345", // Sum of (price * quantity) for all items. value: 72.05, tax: 3.60, shipping: 5.99, currency: "USD", coupon: "SUMMER_SALE", items: [ { item_id: "SKU_12345", item_name: "Stan and Friends Tee", affiliation: "Google Merchandise Store", coupon: "SUMMER_FUN", discount: 2.22, index: 0, item_brand: "Google", item_category: "Apparel", item_category2: "Adult", item_category3: "Shirts", item_category4: "Crew", item_category5: "Short sleeve", item_list_id: "related_products", item_list_name: "Related Products", item_variant: "green", location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo", price: 10.01, quantity: 3 }, { item_id: "SKU_12346", item_name: "Google Grey Women's Tee", affiliation: "Google Merchandise Store", coupon: "SUMMER_FUN", discount: 3.33, index: 1, item_brand: "Google", item_category: "Apparel", item_category2: "Adult", item_category3: "Shirts", item_category4: "Crew", item_category5: "Short sleeve", item_list_id: "related_products", item_list_name: "Related Products", item_variant: "gray", location_id: "ChIJIQBpAG2ahYAR_6128GcTUEo", price: 21.01, promotion_id: "P_12345", promotion_name: "Summer Sale", quantity: 2 }] });

I guess discount should also be without VAT.

I hope you can follow me. Please let me know if I can help.