What You Need to Know
Why This Calculator Matters
Cash back rewards add up to hundreds or thousands per year. Optimizing your card strategy maximizes returns on spending you'd do anyway.
Who Needs This
Anyone using credit cards, people choosing between cards, or those wondering if rewards cards are worth annual fees.
Key Insight
Category-specific cards (5% groceries, 5% gas) often beat flat-rate cards if you can manage multiple cards. But 2% on everything is simpler and still excellent.
Common Mistake
Carrying a balance to earn rewards. Even 3% cash back is crushed by 20%+ interest. Only use rewards cards if paying in full monthly.
Pro Tip
Pair a flat 2% card for everyday spending with category cards for your biggest expenses. Many people earn $1,000+/year this way.
Real-World Example
Scenario: $50,000 annual credit card spending
2% flat cash back = $1,000. Or: 5% on $6,000 groceries + 3% on $15,000 dining + 2% on $29,000 other
Optimized strategy: $300 + $450 + $580 = $1,330. Worth $330 extra for managing 2-3 cards.
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