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  3. Discount Stacking
📚 Series(3 articles)

Discount Stacking

A complete guide to discount stacking. This series covers everything you need to know, from basics to advanced concepts.

1
2026-07-19·7 min readdiscountpercentageshopping

Why 20% Off Plus 10% Off Isn't 30% Off (Stacked Discounts Explained)

Understanding stacked discounts — why two successive percentage discounts don't add up, and how to calculate what you actually save.

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2
2026-07-19·5 min readdiscounttaxshopping

Discount Before or After Tax? The Rule (and the Exception)

Why your receipt sometimes taxes the discounted price and sometimes doesn't — it depends on whether the discount is from the store or the manufacturer.

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3
2026-07-19·8 min readdiscountmarketingshopping

Can You Stack Loyalty Discounts and Promo Codes? (And Why Retailers Let You Think So)

Why your member discount and promo code sometimes stack and sometimes don't — plus the marketing psychology behind why retailers design promotions this way.

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