# Credit Card Interest: The Minimum Due Trap Why credit card debt in India costs 36-42% a year, how the minimum due and lost interest-free period trap you, what rewards are really worth, and the fix. By Nikhil Varghese, CA · 3 January 2026 · https://finniki.com/blog/credit-card-interest-trap **Quick answer:** Credit cards are profitable for banks mainly when you **do not pay the full bill**. Carry a balance and you pay interest of about 3 to 3.75% a month, plus GST on the interest and late fees: roughly **36 to 42% a year**, four to five times a home loan. Paying only the **minimum due** barely reduces what you owe, and rolling over even a small amount usually cancels your interest-free period on new purchases too. Rewards are worth about 1 to 2% of spending, far less than one month of interest. Treat your card as a debit card with benefits: spend only money you have and pay the full bill every month. *This is the companion to our guide on [earning credit card rewards](https://finniki.com/blog/credit-card-rewards-india); this one is about the costs.* [Watch the episode: Credit card interest trap, how banks quietly drain your money](https://youtu.be/Fj19RgQ5O_s) ## Why are credit cards so profitable for banks? Because of what happens when you do not pay in full. India has over 100 million credit cards, and card spending runs at more than ₹20 lakh crore a year, so cards are now the default for shopping, food delivery and travel. Banks earn a small fee from merchants on every swipe, but the real money comes from people who carry a balance. ## How much does credit card debt cost in India? About **36 to 42% a year**. Cards typically charge **3 to 3.75% a month** on unpaid balances, interest is calculated **daily** from the transaction date, and **GST of 18%** is added to the interest and fees. Late fees come on top. Compare: - **Home loan:** about 7.5 to 9% - **Personal loan:** about 12 to 14% - **Credit card balance:** about **36 to 42%** ![Borrowing costs about 8% a year on a home loan, but 36 to 42% on a credit card balance.](https://finniki.com/blog/media/01ca0aff823a55916982d3cc.jpg) ## Why is the minimum due a trap? Because it keeps you in debt while feeling like relief. A ₹60,000 bill with a ₹3,000 minimum due looks manageable. But most of that minimum covers interest and charges, not what you owe. Pay ₹2,500 on a ₹50,000 bill and you might expect to owe ₹47,500. After a month's interest at about 3.75% plus GST, you owe roughly **₹49,000 or more** again, and new purchases add to it. Money leaves your account; the debt barely moves. ![Pay ₹2,500 on a ₹50,000 bill and, after interest, you can owe about ₹49,000 or more again.](https://finniki.com/blog/media/30b63b763b4e50a44657b0fc.jpg) ## What happens to the interest-free period if you do not pay in full? It disappears. Cards advertise 40 to 50 days of interest-free credit, but only if you pay the **full** bill by the due date. Roll over even ₹500 and interest usually applies to new purchases from the day you make them, with no grace period, until you clear the balance completely. The "free credit" collapses the moment you slip. ## Are credit card rewards worth it? Only as a bonus on spending you would do anyway. Take a premium card that gives 4 reward points per ₹150, with each point worth about ₹0.50 when redeemed well: about **1.3%** back. A hotel night needing 20,000 to 30,000 points means spending roughly **₹9 to 10 lakh** a year to earn it. So "my card gives free hotel stays" really means years of heavy spending paid for it, and one month of interest wipes out many months of rewards. Rewards are genuinely valuable when you pay in full and put essentials you already buy (groceries, fuel, insurance, bills, travel) on the card. If your regular spending is large and you choose a card that suits it, well-redeemed rewards can be worth much more, sometimes 10% or so on travel redemptions. But spending extra to earn points always loses. ## Why do credit cards make you spend more? Because they separate spending from pain. Cash leaves your hand and you feel it; UPI debits your account at once and you see it. With a card, nothing leaves your account today, and the bill arrives weeks later, after the emotional link to each purchase has faded. People spend more, justify more and underestimate the total, then wonder on statement day how the bill grew so large. That is human nature, and the system is built around it. ## How do people fall into credit card debt? Usually not through reckless spending but through one hard month. A professional earning ₹80,000 puts food delivery, shopping, fuel and travel on the card. Then a medical bill arrives and they cannot pay the full ₹70,000; they pay the ₹7,000 minimum, planning to clear the rest later. Interest and fees keep the balance stubbornly high. A few months like that and a convenience becomes a burden. Banks often raise limits even for people carrying balances: more limit, more spending, more interest. ## Are credit cards bad? No, they are amplifiers. With discipline, they amplify rewards, convenience and your credit history. Without it, they amplify financial stress. ## How do you use a credit card without paying interest? Treat it like a debit card with benefits: - **Spend only money you already have**, not money you hope to earn. - **Pay the full bill every month**, with no exceptions; set up auto-pay for the full amount. - **Never rely on the minimum due** and never revolve a balance. - **Never overspend to chase rewards.** - **Know your card's interest rate**, and remember your credit limit is borrowed money, not income. ![Use cards safely: always pay the full bill, spend only budgeted money, and never chase points.](https://finniki.com/blog/media/79724fb5ba5e61df3fa26dc5.jpg) Do this and the system flips: no interest, and you keep the cashback, rewards and convenience. If you are already carrying a balance, stop using the card and clear it first; a lower-interest personal loan to pay it off can cut the cost sharply. ## FAQs ### What is the interest rate on credit cards in India? Typically 3 to 3.75% a month on unpaid balances, about 36 to 42% a year once GST on interest is included. ### What happens if I pay only the minimum due? You avoid a late fee, but interest runs on the whole unpaid balance and new purchases lose their interest-free period, so the debt barely falls. ### Do I lose the interest-free period if I carry a balance? Usually yes. Interest applies to new purchases from the day you make them until the full balance is cleared. ### Are credit card reward points worth it? As a bonus on normal spending paid in full, yes, typically about 1 to 2% back. Not if you overspend or carry a balance. ### How do I get out of credit card debt? Stop using the card, pay more than the minimum each month, and consider replacing the balance with a cheaper personal loan. ### Is it good to have a credit card? Yes, if you pay the full bill every month. It builds credit history and gives convenience and rewards at no cost. ## Make your card work for you A card should cost you nothing and pay you back. [Book a session](https://finniki.com/book) to plan your way out of card debt or set up a spending system, or find more episodes on [FinNiki videos](https://finniki.com/videos).