Credit Cards 101
A credit card is a short-term loan. Every time you swipe, the bank pays the merchant and you owe the bank. If you pay the full statement balance by the due date, you pay zero interest. If you carry a balance, you pay 18-28% APR — one of the highest interest rates on any financial product.
Used correctly, credit cards are powerful financial tools: they build credit, offer rewards, and provide purchase protection. Used incorrectly, they are a fast path to financial ruin.
How to Use Credit Cards Wisely
- Pay in full every month — This is the golden rule. If you cannot pay the full balance, you are spending money you do not have
- Keep utilization below 30% — If your limit is $10,000, never carry more than $3,000 balance at statement close. Below 10% is even better for your credit score
- Use rewards strategically — Cashback cards return 1-5% on purchases. A 2% cashback card on $2,000/month spending = $480/year in free money. But only if you pay in full
- Set up autopay for full balance — Eliminates the risk of missed payments and interest charges
- Never use for cash advances — Cash advance APR is 25-30% with no grace period. Interest starts immediately. Plus a 3-5% fee
The Credit Card Debt Trap
- Minimum payment trap — On a $5,000 balance at 22%, paying minimum ($100/month) takes 9 years and costs $5,840 in interest. You pay $10,840 for $5,000 in purchases
- How to escape — Stop using the card immediately. Pay as much as possible above minimum. Consider balance transfer to a 0% APR card (saves interest for 12-21 months). Use the avalanche method: pay off highest interest card first
- Prevention — Only charge what you can pay in full this month. If you cannot trust yourself, use a debit card instead. No shame in that — avoiding debt is smarter than earning rewards