Cashback Stacking: How to Earn 5–15% Back on Everyday Spending

Cashback stacking combines multiple layers of rewards on a single purchase. Done right, you can earn 5–15 % back on spending you’d do anyway. Done wrong, you spend more than you save.

The four layers (stacked top to bottom)

1. Credit card cashback (1–5 %): use the right card for each category — grocery card at the supermarket, dining card at restaurants.
2. Shopping portal cashback (1–10 %): start at a portal (Rakuten, TopCashback, Letyshops) before clicking through to the retailer.
3. Merchant offers (5–25 %): Amex Offers, Chase Offers, Mastercard Easy Savings — enroll the card and the discount applies automatically.
4. Loyalty programs: airline shopping portals, hotel points malls — sometimes 2–5× points.

A worked example

You buy a $200 jacket at a department store:

• Card: 3 % back ($6).
• Portal: 5 % back ($10).
• Amex Offer: $20 back on $100+ spend.
• Total: $36 back on $200 = 18 % effective cashback.

The three rules

1. Never buy something you wouldn’t otherwise buy. If stacking makes you spend, you’ve lost.
2. Read exclusions: gift cards, certain categories, and returns often void the cashback.
3. Track your stacks for 60 days — portals occasionally fail to track and you need to file claims.

When NOT to stack

• If the item is meaningfully cheaper elsewhere without the stack.
• If you’re buying from an unfamiliar retailer just for the cashback.
• If the portal requires you to disable ad blockers — that’s a red flag.

Stack rewards on purchases you’d make anyway. Anything else is just spending with extra steps.