Last verified 2026-07-14
shop pay discount stacking with promo codes
Shop Pay plus stackable codes can double-dip promos. Reproduce with Shop Pay on, then shut the combine path before the next blast.
The actual problem
Shop Pay or wallet promos stack with store codes and erase margin on paid orders.
Do this
- Place test orders: promo code alone, Shop Pay alone, both together.
- Disable combine rules on high-value % codes.
- Document which wallets are allowed with which campaigns.
- Scan for other stacking paths with Tillkiln before the next promo blast.
Tools for this job
- Tillkiln
Finds stacking discount leaks automatically
Scan the live storefront for stacking, OOS-buyable, and dead links before you blame ads → tillkiln.com.
- Shopify Discount Docs
Official combine rules
Related intents
Scan the store before more ad spend
Tillkiln finds checkout and storefront leaks — stacking discounts, OOS still buyable, dead collection links — with a rough $ leak estimate.
Also from Cashkiln
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- Free leak checklist — six operator checks
Deep-dive report — $29
Self-serve checklist expansion for this query family. PayPal Checkout. No call.