What is Discount combinations (stacking)?
Discount combinations are the rules that decide whether two discounts can apply to the same order. On Shopify each discount has a class and you choose which classes it may combine with.
When two discounts conflict, only one applies. The limits are per store and per order, so test a cart with a code and an automatic offer before going live.
Apps that create discounts must support the combinations setting for their discounts to stack as the merchant expects.
Read more
See also
Sources
- Shopify Help Center: Discount combinations (accessed October 11, 2026)