# Credit Card EMI Calculator: EMI, Fee and GST > Credit card EMI calculator: convert a purchase or bill into EMIs and see the EMI, interest, fee, 18% GST on both, and the cost compared with revolving. Source: https://trykosh.com/tools/credit-card-emi-calculator Free tool - Loans and credit cards # Credit card EMI calculator Turning a large card purchase into EMIs is far cheaper than revolving it, but not free. See the full cost including the fee and GST. Rules checked 25 October 2026Free - no sign-upRuns in your browser Monthly EMI INR 4,537 plus about INR 67 GST on the interest each month Interest**INR 4,439** Fee + GST on all**INR 1,389** True yearly cost**21.2%** Amount **INR 50,000**Interest **INR 4,439**Fee + GST **INR 1,389** Amount converted INR 50,000 Interest over the tenure INR 4,439 Processing fee INR 500 GST at 18% on interest and fee INR 889 Total extra cost INR 5,827 Total you pay INR 55,827 Revolving instead at 3.6%/month with the same payment: interest + GST INR 18,481 EMI schedule, month by month Month Principal Interest Balance 1 INR 3,870 INR 667 INR 46,130 2 INR 3,921 INR 615 INR 42,209 3 INR 3,974 INR 563 INR 38,235 4 INR 4,027 INR 510 INR 34,208 5 INR 4,080 INR 456 INR 30,128 6 INR 4,135 INR 402 INR 25,993 7 INR 4,190 INR 347 INR 21,803 8 INR 4,246 INR 291 INR 17,557 9 INR 4,302 INR 234 INR 13,255 10 INR 4,360 INR 177 INR 8,895 11 INR 4,418 INR 119 INR 4,477 12 INR 4,477 INR 60 INR 0 The converted amount stays blocked on your credit limit and is released as you repay. Closing the EMI early usually carries a foreclosure fee. ## Upload your statement and Kosh does this for you. Upload a bank or card statement and Kosh finds every EMI and card charge, then builds the fastest way out of debt that still fits your month. [Start free](/signup?via=tool-credit-card-emi-calculator) ## How the credit card EMI calculator works When you convert a card purchase or outstanding into EMIs, the bank books it as a small reducing-balance loan at a yearly rate, usually much lower than the card's revolving rate. Enter the amount, the rate and tenure from the bank's offer. Each month's statement shows the EMI, which contains interest and principal, and 18% GST on the interest part. So your monthly outgo is slightly more than the EMI. The calculator adds up the GST over the whole tenure. Banks also charge a one-time processing fee, as a percentage or a flat amount, with 18% GST. The true yearly cost shown includes the fee and all the GST, worked out from the cash flows. For context, the calculator also shows what you'd pay in interest and GST if you simply revolved the same amount at the card's monthly rate while paying the same monthly sum. That gap is the reason to convert rather than revolve. EMI = P x r x (1 + r)ⁿ / ((1 + r)ⁿ − 1); Extra cost = interest + fee + 18% x (interest + fee) P amount converted r yearly EMI rate / 1,200 n months ## Worked example: Farah's laptop on a 9-month card EMI Farah converts a INR 90,000 laptop purchase into a 9-month EMI at 15% a year, with a 1.5% processing fee. Her EMI is INR 10,635. Over nine months she pays INR 5,718 in interest, a INR 1,350 fee and INR 1,272 GST on both, so the conversion costs INR 8,340 in all, a true yearly cost of 22.2%. Revolving the same amount at 3.6% a month would have cost INR 23,624. Monthly EMI INR 10,635 plus about INR 114 GST on the interest each month Interest**INR 5,718** Fee + GST on all**INR 2,622** True yearly cost**22.2%** Amount **INR 90,000**Interest **INR 5,718**Fee + GST **INR 2,622** Amount converted INR 90,000 Interest over the tenure INR 5,718 Processing fee INR 1,350 GST at 18% on interest and fee INR 1,272 Total extra cost INR 8,340 Total you pay INR 98,340 Revolving instead at 3.6%/month with the same payment: interest + GST INR 23,624 The converted amount stays blocked on your credit limit and is released as you repay. Closing the EMI early usually carries a foreclosure fee. [Load this example into the calculator ->](?amount=90000&rate=15&months=9&feePct=1.5#calculator) ## Good to know - The converted amount stays blocked on your credit limit and is released gradually as you pay EMIs. - Foreclosing a card EMI early usually carries a fee, often a percentage of the outstanding principal, plus GST. - You can usually convert only within a window after the purchase or before the statement due date. Converting after the due date may mean interest has already been charged. - Compare with a personal loan for large amounts. A loan at a similar rate with a lower fee can work out cheaper and doesn't block your card limit. ## Frequently asked questions Is credit card EMI a good idea? It is much cheaper than revolving the balance at around 3.5% a month, and it gives you a fixed payoff date. It still has a cost, from interest, a processing fee and 18% GST, so only use it if you can't pay the bill in full. Is GST charged on credit card EMI? Yes. 18% GST is charged on the interest part of each EMI and on the processing fee. It appears as a separate line on your statement each month. Does converting to EMI affect my credit score? Not directly, but the converted amount stays on your card limit, which keeps utilisation high until it is repaid. Paying each EMI on time protects your score. Can I convert my whole credit card bill into EMI? Many banks let you convert the outstanding balance, not just single purchases, subject to a minimum amount. The rate and fee for bill conversion can differ from purchase EMIs. ## Sources and assumptions - [Reserve Bank of India](https://www.rbi.org.in/) - [CBIC GST portal](https://cbic-gst.gov.in/) Rules and rates last checked on 25 October 2026. Results are estimates for planning and education, not tax, legal or investment advice. Kosh is an educational financial planning tool by Primedepth Labs. It is not a SEBI-registered investment adviser and does not offer personalised investment advice, hold your money or execute trades. Markets carry risk; read scheme documents carefully and consult a registered adviser before acting.