Credit cards, when used correctly, are among the best financial tools available. When used carelessly, they become high-interest debt traps. The difference lies entirely in understanding how they work and using them with discipline.
How Credit Cards Actually Make Money
Banks profit from credit cards through: (1) Annual fees, (2) Interest charges on revolving balances – typically 2.5–3.5% per month (30–42% per year), and (3) Interchange fees charged to merchants. Profitable credit card users pay their bills in full every month, earning rewards at the merchant’s expense without paying any interest.
How to Pick the Right Card
Match the card to your highest spending category:
- Travel heavy? – Axis Magnus, HDFC Infinia, ICICI Sapphiro. Miles, lounge access, hotel perks.
- Shop on Amazon? – Amazon Pay ICICI Card. 5% back on Amazon, 2% on pay later partners. Zero annual fee.
- Fuel spends? – SBI BPCL Card, HDFC Paytm Card. Up to 4.25% effective cashback on fuel.
- Dining & entertainment? – Swiggy HDFC, Zomato RBL. Extra rewards on food apps.
The Rules That Protect You
- Always pay the full “Total Outstanding” – never just the “Minimum Due.” Paying only the minimum means your entire unpaid balance accrues 36–42% interest retroactively.
- Keep utilization below 30% of your credit limit to protect your CIBIL score.
- Never miss a payment – even one missed payment can drop your CIBIL score by 50–100 points and stays on record for 7 years.
- Never withdraw cash from a credit card. Interest applies from day one with no grace period, plus a 2.5–3% cash advance fee.
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