Credit card interest in India: monthly rate, annual percentage and how finance charges are calculated
How Indian credit card interest works in 2026 — monthly rate vs annual rate, loss of the interest-free period, daily calculation from transaction dates, GST and worked rupee examples.
Indian card issuers usually state interest as a monthly percentage — for example "3.5% per month" — which is 42% a year simple, and about 51% a year when compounded monthly. Interest is charged only if you do not pay the total amount due by the due date. Once you carry any balance, most cards charge interest from each transaction date and new purchases lose the interest-free period until the balance is cleared in full. 18% GST is then added to the interest. That is why a card that earns 1–2% in rewards becomes very expensive the moment you revolve a balance. Rates in this guide are illustrative; your MITC and Key Fact Statement give your card's rate.
This guide belongs to the cashback vs reward points overview. It is general information, not financial advice.
Monthly rate, annual rate and APR
| Monthly rate (illustrative) | Annual rate (× 12) | Effective annual rate (compounded monthly) |
|---|---|---|
| 2.5% | 30% | about 34.5% |
| 3.0% | 36% | about 42.6% |
| 3.5% | 42% | about 51.1% |
| 3.75% | 45% | about 55.5% |
The effective rate is (1 + monthly rate)^12 − 1. Issuers often show both a monthly figure and an annualised figure in the MITC. Some cards price interest by customer profile or payment history; the RBI directions require such variations to be transparent and based on the issuer's approved policy. The rules do not set a fixed ceiling, and in December 2024 the Supreme Court set aside a 2008 National Consumer Disputes Redressal Commission order that had treated rates above 30% a year as an unfair trade practice. Interest rates are therefore a matter for the issuer's disclosed terms and the RBI's oversight.
When interest is charged
- You pay the total amount due by the due date: no interest on purchases. This is the interest-free period, often described as "up to 45–50 days" depending on when in the cycle you spent (illustrative).
- You pay less than the total, even the minimum amount due: interest is charged on the unpaid balance, and on most cards from the date of each transaction, not from the due date.
- Purchases made while a balance is outstanding: under the RBI directions the interest-free period can be suspended while any balance from the previous bill is outstanding, so these purchases attract interest from day one.
- Cash withdrawals: interest from the date of withdrawal, with no interest-free period, plus a cash advance fee. See cash withdrawals on a credit card.
The directions also say interest may be charged only on the outstanding amount after adjusting payments, refunds and reversed transactions, and that unpaid charges and taxes must not be capitalised for interest.
Worked example: one month of revolving (illustrative)
Statement date 5 March, total due ₹30,000, due date 25 March. You pay ₹10,000 on 25 March. Monthly rate 3.5% (≈ 0.1151% a day using 42% ÷ 365).
- The ₹30,000 was made up of purchases averaging 20 days before the statement date, so interest runs from those dates.
- Until 25 March: ₹30,000 × 0.1151% × about 40 days ≈ ₹1,381.
- From 25 March to the next statement on 5 April: ₹20,000 × 0.1151% × 11 days ≈ ₹253.
- Interest ≈ ₹1,634, plus 18% GST ≈ ₹294: about ₹1,928 for not paying ₹20,000 for a few weeks.
Exact methods differ by issuer; the MITC usually shows the issuer's own worked example. Compare that with the rewards: on ₹30,000 of spend, 1.5% cashback is ₹450.
Late payment charge vs interest
A late payment charge is a separate fee if you do not pay at least the minimum amount due. It is usually slab-based by the total due (illustrative: a few hundred rupees for small balances, more for larger ones) plus GST. Under the RBI directions it may be levied only if the account is past due for more than three days after the due date. Interest, by contrast, runs whenever you do not pay in full. You can owe both.
How to cut interest
- Pay the full statement balance by setting an auto-debit for the total amount due, not the minimum.
- Pick a billing cycle that fits your salary date; see billing cycle and interest-free period.
- Stop using the card while clearing a balance, so new spends do not attract interest from day one.
- Convert to a cheaper form of credit if needed: an EMI plan on the card or a personal loan, after checking the processing fee with GST. Run the numbers in the card debt payoff calculator and read card EMIs and no-cost EMIs.
- Do not pay one card with another through a cash advance or wallet route; it adds fees and interest.
When to get help
If interest is consuming most of your monthly payment, ask the issuer about a structured repayment plan, and avoid unregulated "debt relief" agents who ask for upfront fees. A registered adviser or the bank's grievance channel is the safer starting point.
Frequently asked questions
Is the interest rate the same for every cardholder of the same card?
Not always. Some issuers vary rates by profile or payment history; the rate that applies to you must be disclosed.
Does paying the minimum stop interest?
No. It stops the late fee and a past-due report, but interest runs on the whole unpaid balance. See the minimum amount due.
Is GST charged on card interest?
Yes, 18%. See GST on card charges.
When does the interest-free period come back?
Usually once you have paid the total outstanding in full; check your card's terms.
Sources
- Reserve Bank of India — Credit Cards and Debit Cards: Issuance and Conduct Directions, 2025 (interest, past due, no capitalisation of charges)
- Supreme Court of India — judgment of 20 December 2024 on credit card interest (Hongkong and Shanghai Banking Corporation Ltd. v. Awaz and others)
- CBIC GST portal — GST on financial services
