Everything else in this series comes undone if this one gets away from you.
These tools are designed by trillion-dollar industries specifically to extract money from you, and they are very good at it.
If I could beat a drum and say just one thing on avoiding credit card danger: auto-pay your credit card statement balance in full every month.
What credit cards are
At their core, credit cards are short-term loans. You swipe, the bank pays, and you promise to pay them back. If you pay in full every month, you’re golden. If you don’t, you’re basically borrowing money at 27% interest from credit card sharks.
Used responsibly, credit cards can help you:
• Avoid carrying massive wads of cash that say “rob me”
• Track spending
• Build your credit score
• Earn rewards (cash back, travel points, etc.)
• Get fraud and consumer protection
But - and this is a trillion-dollar-industry sized but - they can also:
• Let you spend money you don’t have
• Change the way spending money feels versus paying cash
• Charge 20–30% interest if you carry a balance
• Trap you in a downward spiral of snowballing debt
What credit cards are not
• A free 0% interest loan. That’s an introductory offer, a sly sales trick, and a horrible surprise waiting to happen when the true 27% APR (annual percentage rate) kicks in.
• A path to wealth. Nobody is getting rich off credit card points, they are a short term bonus at best.
• A substitute for an emergency fund.
• A way to buy things you can’t afford.
• A way to make money by spending money.
So should you use one?
Wait until you understand your spending habits and consistently spend less than you earn. There’s no shame in using a debit card while you build your system and behavior.
Once you know for sure you can pay off the credit card in full every month and never carry a balance, you have proven your responsibility and can likely go for it.
Which credit card and how many?
Look for no or low annual fees, clear rewards, and no BS in the fine print. I like simplicity and thus a single credit card - a simple cash back or travel rewards card. Check annual fees and signup bonuses, and know that because you will always pay in full, that big scary interest rate they hide in the fine print shouldn’t impact you, but let a healthy fear of that big scary interest rate motivate your continued full monthly auto-payments. For cards with an annual fee, run some quick math to determine if you are getting more value out of the card than the upfront dollar value you are paying to carry it.
Which credit cards to avoid and why?
Almost all of them. Anything marketed as “buy now, pay later”. Anything from a retail store. Anything with hidden fees, high fees, promising to be a “credit builder”. This is a trillion dollar industry with every trick up their sleeve to get you on the hook so tread carefully.
Most cards are hardly worthy to be used as toilet paper. Every card you add complicates your accounts and hurts your credit score 1) immediately when you open a new line of credit and 2) potentially because of a now higher risk you forget to pay and rack up debts.
Pick one and keep it simple.
What about travel hacking?
Most people should avoid playing this game entirely and focus on simple, disciplined habits. Travel hacking means taking advantage of credit card sign-on bonuses and rewards to unlock “free” flights, hotels, and perks. Chasing sign up bonuses and juggling cards can feel like beating marketers at their own game, but you are only winning if you never miss a payment, never pay interest, stay organized, and track your spending.
If you have mastered your financial systems and are doing all the unsexy, wise, and boring-yet-effective work for the long term and you just can’t help but tinker with this, you may not care about the credit score hit and can likely tinker in this with great caution.
Final Thoughts
Credit cards can totally ruin your financial life and mental well-being. They give you the power to spend money you may not actually have. The most important thing is to use them as a tool, not let them use you. Points were never the point - the idea is to stay free.