Credit Card EMI Calculator
Converting a large card purchase into monthly instalments spreads the cost, but the convenience is rarely free. This credit card EMI calculator turns your purchase into an EMI, then reveals the interest and GST hidden behind low-EMI and no-cost offers. Enter the purchase amount, the rate the card charges and the tenure to see your monthly instalment, the total interest, and the GST on that interest, so you can judge the real cost before you convert.
12 months
Monthly EMI
₹10,046
Total Interest
₹20,555
Principal
₹1,00,000
Total Payment
₹1,20,555
| Month | Principal | Interest | Balance |
|---|---|---|---|
| 1 | ₹7,046 | ₹3,000 | ₹92,954 |
| 2 | ₹7,258 | ₹2,789 | ₹85,696 |
| 3 | ₹7,475 | ₹2,571 | ₹78,221 |
| 4 | ₹7,700 | ₹2,347 | ₹70,521 |
| 5 | ₹7,931 | ₹2,116 | ₹62,591 |
| 6 | ₹8,168 | ₹1,878 | ₹54,422 |
| 7 | ₹8,414 | ₹1,633 | ₹46,009 |
| 8 | ₹8,666 | ₹1,380 | ₹37,343 |
| 9 | ₹8,926 | ₹1,120 | ₹28,417 |
| 10 | ₹9,194 | ₹853 | ₹19,223 |
| 11 | ₹9,470 | ₹577 | ₹9,754 |
| 12 | ₹9,754 | ₹293 | ₹0 |
About the Credit Card EMI Calculator
A credit card EMI converts a single large purchase into fixed monthly instalments at a stated interest rate, instead of demanding the full amount in one billing cycle. It is a short-term loan on your card, and like any loan it carries interest, on which GST is also charged.
Why it is useful
Card EMIs and no-cost offers are marketed as painless, but the interest is often bundled into the price or a processing fee, and 18% GST applies on the interest even when the rate is advertised as zero. Seeing the EMI, the real interest and the GST separately lets you compare the offer with paying upfront or using a cheaper loan.
How the calculation works
The instalment uses the standard EMI formula EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1), where P is the purchase amount, r is the monthly rate (annual rate ÷ 12 ÷ 100) and n is the number of months. GST at 18% is then applied to the interest component. Converted card EMIs typically charge 13% to 18% p.a., while revolving an unpaid balance can cost 30% to 45% p.a.
Key inputs explained
- Purchase amount: The transaction value you want to convert into an EMI.
- Interest rate: The annual rate the card charges on the EMI, often 13% to 18%.
- Tenure: The number of months over which you repay, commonly 3 to 24.
- GST on interest: GST at 18% is levied on the interest portion of each instalment.
Example calculation
Inputs
- Purchase amount (P)
- ₹1,00,000
- Interest rate
- 15% p.a.
- Tenure (n)
- 12 months
Calculation breakdown
- Monthly rate (r)
- 15 ÷ 12 ÷ 100 = 0.0125
- (1 + r)^n
- (1.0125)^12 ≈ 1.1608
- Base EMI
- 1,00,000 × 0.0125 × 1.1608 ÷ (1.1608 − 1) ≈ ₹9,026
- Interest and GST
- interest ≈ ₹8,312; GST 18% ≈ ₹1,496
The 12 EMIs of about ₹9,026 add up to roughly ₹1,08,312, so the interest is about ₹8,312, plus ₹1,496 of GST on it. Even a no-cost version does not escape the ₹1,496 GST, and the interest is usually recovered as a processing fee or built into the price.
Benefits
- Reveal the real interest hidden in a no-cost EMI offer.
- Include the 18% GST on interest that is never waived.
- Compare converting to EMI against paying the bill in full.
Limitations
- Excludes processing fees and any GST charged on those fees.
- Ignores foreclosure charges if you close the EMI early.
- Assumes a fixed rate; card rates and offers change frequently.
Tips
- Convert to EMI rather than let a balance revolve at 30% to 45%.
- Ask for the processing fee and total interest in rupees before agreeing.
- Remember GST on interest applies even on a no-cost EMI.
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About this calculator
The Credit Card EMI Calculator is built and maintained by the PaisaBot team. All calculations run instantly in your browser using established financial formulas, and we use high-precision arithmetic to keep the results reliable.
Data accuracy: Interest rates, tax slabs, and scheme rules are updated periodically, but figures can change with RBI, government, and lender revisions. Always confirm the latest rates with your bank or an official source before acting.
Educational purpose: This tool is provided for general information and financial education only. It does not constitute investment, tax, or legal advice. For decisions specific to your situation, please consult a qualified financial advisor.