Cross-sells
Enable customers to purchase complementary products at checkout by using cross-sells.
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A cross-sell is a product that you can add to an order using Checkout.
Cross-sells enable customers to optionally purchase other related products using Checkout. Cross-sells can increase your average order value and revenue. For Checkout to offer a product as a cross-sell, the product must meet the following criteria:
- The product must be associated with only a single Price.
- The currency of the cross-sell product’s price must match the currency of the other prices in the Checkout Session.
- If the cross-sell product’s price type is
recurring
, the Checkout Session must be in subscription mode and its recurring interval must match the recurring interval of the other prices in the Checkout Session. - If you’re using subscription upsells, cross-sells only support products with non-recurring prices. For example, you can cross-sell a one-time setup fee while also upselling a monthly subscription to annual billing.
- If you’re using automatic taxes, cross-sells only support products with prices with specified tax behavior. You can either set tax behavior for a price or set the default tax behavior for all prices under Tax Settings in the Stripe Dashboard.
Create a cross-sell 
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Configure a cross-sell on the Product detail page.
You can configure a cross-sell in the Dashboard on the Product details page. Visit the Product details page for the product from which you want to cross-sell another complementary product. You’ll see a Cross-sells section with a dropdown menu containing your other Products. Select a Product with a single Price. After you configure it, all eligible Checkout Sessions cross-sell the product selected from the dropdown menu. For example, a customer purchasing a ‘Togethere Professional’ subscription would be cross-sold the ‘Professional Services: Deployment’ product.
Checkout flow 
In Checkout, buyers see an option to add the cross-sell to their purchase. If buyers add the cross-sell to the Checkout Session, they can also remove it. If they remove it, the option to add the cross-sell appears again.
Note
The quantity of cross-sell line items cannot be adjusted. The current maximum is 1.

Customer preview.
Retrieve Checkout Session line items 
After a customer adds a cross-sell, the line_
for the Checkout Session update to reflect the addition. When fulfilling your order using the checkout.
webhook, make sure to retrieve the line items.
Remove a cross-sell 
You can remove a cross-sell on the Product details page. After you remove it, the product won’t be offered to any new Checkout Sessions.

Remove a cross-sell.