Best Card Finder — Which Credit Card to Use for Any Purchase

Free best credit card finder. Paste a shopping link and instantly see which card earns the most on that purchase, plus any live Rakuten cashback. Stack rewards for up to 15% back.

Paste a shopping link and the Best Card Finder instantly shows which card earns the most on that purchase, plus any live Rakuten cashback you can stack on top. Combining the right card with a shopping-portal bonus can push your total return into double digits on a single purchase.

How it works

  1. Paste the product or store link you are about to buy from.
  2. The finder identifies the merchant category and ranks cards by what they earn there.
  3. It surfaces any live Rakuten cashback for that store so you can stack the portal bonus on top of your card rewards.

Illustrative: stacking rewards on a $200 purchase

LayerReturn
Card earning 3% in the category$6.00
Plus a 6% Rakuten portal bonus$12.00
Total$18.00 (9%)

Illustrative — portal rates change often and are time-limited.

Common questions

How can I get up to 15% back on a purchase?

By stacking: use the card that earns the most in that category and route the purchase through a shopping portal like Rakuten that is running a cashback bonus for that store. The two rewards add together.

Do shopping-portal rates change?

Yes — portal cashback rates move often and are time-limited, so check the current rate before you buy.

Is the Best Card Finder free?

Yes. Paste a link and see the best card plus any live portal bonus; no signup is required.

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