How to Stack Coupons for Maximum Savings

Stacking simply means combining more than one discount on the same order — for example, a percentage-off promo code, a site-wide cashback rate, and a loyalty program discount, all on one purchase. Not every retailer allows every combination, but many allow at least two of the three.

The key is understanding which discounts are applied at checkout (like a promo code) versus which are tracked separately after purchase (like cashback), since they don't compete with each other.

A reliable order to try: first apply any loyalty or membership discount if the retailer offers one, then apply the best available promo code at checkout, and finally make sure cashback tracking is active before you click "buy" (most cashback tools work through a browser extension or a special link you click before shopping).

If a retailer's checkout only allows one code field, prioritize the promo code with the highest percentage or dollar value, and let cashback run in the background.