The rate on the statement
Card statements often show interest as a monthly percentage, such as 3.5%. It looks small because it is a monthly figure, but it is applied every month the balance stays unpaid. Rates differ by card and issuer; 3.5% is used here as an assumption for the arithmetic, so check your own statement.
The conversion to a yearly rate:
- Simple yearly figure: 3.5% × 12 = 42%
- With monthly compounding: (1.035)^12 − 1 = about 51.1%
The second figure is the true yearly cost if a balance keeps compounding for a full year. Compare that with the 8% in our example for compound interest and the gap between what savings earn and what card debt costs is hard to miss.
What the minimum due does
Take a ₹50,000 unpaid balance and assume a minimum due of 5% of the balance (the actual formula varies and often adds fees and tax).
Month 1
- Interest: ₹50,000 × 3.5% = ₹1,750
- Balance with interest: ₹51,750
- Minimum due: 5% × ₹51,750 = about ₹2,588
Say you pay ₹2,500. The balance becomes ₹51,750 − ₹2,500 = ₹49,250. Of your ₹2,500, ₹1,750 went to interest and only ₹750 reduced the debt.
Month 2
- Interest: ₹49,250 × 3.5% = about ₹1,724
- Your next minimum is a similar size, and again only a little over ₹750 reduces the balance.
After two months of "paying on time", you have paid roughly ₹5,000 and owe about ₹48,500. The balance has barely moved because the interest eats most of each payment. Paying the minimum keeps the account in good standing but does little to clear the debt, and any new purchases usually start accruing interest immediately rather than getting the interest-free period.
The difference between "total due" and "minimum due"
| What you pay | Effect (typical card terms) |
|---|---|
| Total amount due by the due date | No interest on that statement's purchases; the interest-free period is kept |
| Minimum due only | Interest on the unpaid balance, often from the purchase dates, and the free period is lost |
| Nothing | Late fee, interest, and a possible mark on your credit record |
Terms vary, so read your card's schedule of charges. The point holds across issuers: paying the full statement balance is the only way card credit is close to free.
If you already carry a balance
- Stop using the card for new spending until the balance is cleared, so you are not adding to a growing figure.
- Pay more than the minimum. Every extra rupee goes straight to principal and cuts the next month's interest.
- Compare alternatives. A personal loan, a gold loan or a card EMI may cost less, but fees matter. Our comparison of gold loan vs personal loan vs credit card and the note on the true cost of a personal loan show how to check.
- Do not break your emergency fund blindly. Weigh a 40-plus per cent cost of debt against what the savings earn, and rebuild the buffer afterwards. See how many months an emergency fund needs.
Using cards without the trap
Rewards only pay if the balance is cleared every month. Our post on credit card rewards without the debt trap covers autopay settings and spending limits.
This post is educational, not financial advice. The 3.5% rate and 5% minimum due are assumptions for illustration; your card's terms will differ.
Frequently asked questions
How is credit card interest usually quoted?
Many cards quote it as a monthly percentage. Multiplying by 12 gives the simple yearly figure, and compounding on an unpaid balance makes the real yearly cost higher.
What happens if I pay only the minimum due?
The card is not treated as fully paid, interest is typically charged on the remaining balance and often on new purchases too, and most of the payment goes to interest rather than reducing what you owe.
Is a card EMI conversion cheaper than carrying the balance?
Often, but the processing fee and tax can be significant. Compare the total you will pay across the EMI term with the cost of clearing the balance sooner.
This is commentary on published data, not investment advice. WealthTicker is not a SEBI-registered adviser or distributor. Figures are as of the dates stated and can be revised by their source.
Keep reading
How to choose a credit card by what you spend on
Pick a card from your own spending, not its ad. A fee break-even test, the five card types, and how a matching tool like BestCard fits in.
Flat vs reducing rate: what a flat 7% loan really costs
On ₹5 lakh over 3 years, 7% flat costs ₹1,05,000 in interest against ₹55,788 at 7% reducing. It equals a 12.83% reducing rate, about 1.8 times the quote.
Credit card rewards without the debt trap
A card that is paid in full is a free 50-day loan with rewards. One that revolves costs about 42% a year. How to keep a card on the right side of that line.