Can I target discounts based on the source of website traffic?

Preventing Discount Stacking: A Margin Protection Guide

Discount stacking occurs when customers combine multiple promo codes, loyalty rewards, auto-applied discounts, and sale pricing - sometimes resulting in orders at near-zero margin. In 2024, Shopify introduced expanded stacking controls, but proactive offer design remains the most reliable protection.

Shopify Stacking Controls (2026)

Design-Level Stacking Prevention

The most reliable approach: don't give customers a code to stack. Auto-applied discounts triggered by cart conditions (spend $75+, get free shipping) eliminate the code entry field entirely for that offer. No code = no stacking attempt.

For exit-intent offers especially, auto-applied codes that expire after the session prevent code sharing and stacking entirely. The discount activates and disappears with the session - there's nothing to screenshot and share on coupon sites.

Growth Suite's Anti-Stacking Architecture

Growth Suite generates single-use discount codes for each triggered offer. These codes are deleted server-side when the timer expires - they can't be saved, shared, or stacked after the session ends. This eliminates the coupon-site problem that makes traditional discount codes vulnerable to margin erosion.

Combined with Growth Suite's rule that each visitor gets one real offer - no repeat triggers, no offer stacking across campaigns - the system naturally prevents the multi-offer scenarios that compound stacking problems.