No Cost EMI Calculator

See exactly how a "No Cost EMI" offer works in India — the discount that cancels the interest, and the GST on it you still pay.

Purchase Details

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The rate the bank would charge if this weren't "no cost" — used to work out the discount.
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Charged on the interest and the processing fee — not waived by the discount.

Your Results

Monthly EMI You Pay
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Upfront Discount (= Interest)
₹0
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GST on Interest
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Fee + GST
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Total Hidden Cost
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True Total Cost

Sticker Price vs. What You Actually Pay

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How "No Cost EMI" Actually Works

A No Cost EMI offer looks like an interest-free loan, but it's really a discount dressed up as one. The seller or financing partner first works out what a normal EMI on the purchase would cost — principal plus interest, using the standard reducing-balance formula — and then gives you an upfront discount on the product's price equal to exactly that interest amount. You then repay the discounted price in equal instalments, so the total you hand over roughly matches the item's price, not the price plus interest.

The formula behind it

EMI = P × r × (1 + r)n / [(1 + r)n − 1]

Here P is the product price, r is the bank's standard monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the tenure in months. The total interest this formula produces over the full tenure is the amount discounted off the price — that's the mechanic that makes the EMI "no cost."

The part that isn't waived: GST

GST is a tax on the lending service itself, charged on the interest amount and on any processing fee — and unlike the interest, it is not offset by the discount. At 18% GST, an interest amount of ₹3,000 adds ₹540 in tax that you pay regardless of the "no cost" label. This is the genuine, unavoidable cost of an otherwise interest-free EMI, alongside any processing fee and the GST on that fee.

How to use this calculator, step by step

  1. Enter the Product Price and the bank's standard interest rate that would normally apply.
  2. Enter your Tenure in months and any Processing Fee the bank or platform charges.
  3. Click Calculate to see your monthly EMI, the discount that cancels the interest, and the real hidden cost — GST on interest and on the fee.
  4. Compare "True Total Cost" against the product's regular cash price elsewhere before assuming the deal is genuinely the cheapest option.

How to spot a fake "No Cost" deal

A well-known retail trick is to quietly raise a product's listed price before applying the no-cost EMI discount, so the "0% interest" price ends up no cheaper — sometimes even more expensive — than the same product's normal cash or UPI price from another seller. Always check the item's regular price elsewhere before treating a no-cost EMI badge as a genuine saving.

For example, on a ₹50,000 purchase at a bank's standard 15% annual rate over a 6-month tenure with a ₹199 processing fee and 18% GST: the EMI works out to about ₹8,702/month, with roughly ₹2,210 in interest discounted off the price, plus about ₹633 in GST on that interest and on the fee that remains a genuine, unavoidable cost on top of the ₹50,000 price — a true total of about ₹50,633. Enter these same figures above to reproduce this result.

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Frequently Asked Questions

It means the seller (or the bank/NBFC behind the offer) calculates the interest that a normal EMI would carry, then gives you an upfront discount on the product's price equal to that exact interest amount. You still repay the loan in monthly instalments, but because the discount cancels out the interest, your total outlay works out to roughly the same as the product's price — hence "no cost."

The interest itself is effectively cancelled by the discount, but it is not truly cost-free. GST (currently 18%) is charged on the interest component and on any processing fee, and that GST is not waived — only the interest is offset. So you do pay a small real cost on top of the sticker price, even on a genuine no-cost EMI offer.

GST is a tax on the financial service of lending, calculated on the interest amount the bank charges — the discount you receive offsets the interest itself, but it doesn't change the fact that a loan service with interest was provided, so the GST on that interest still applies. The retailer or bank absorbs the interest cost through the discount; the GST is a separate government levy that isn't theirs to waive.

No. A processing fee for converting a purchase to EMI is a one-time charge for setting up the loan, separate from the interest calculation, and it is not offset by the no-cost EMI discount. Along with GST on that fee, it's one of the two genuine out-of-pocket costs of an otherwise "no cost" EMI.

Converting a purchase to No Cost EMI on a credit card typically blocks that amount against your available credit limit for the tenure, the same as any other EMI conversion, so it reduces how much credit you have free for other spending. Making your EMI payments on time supports your credit score just like any other credit obligation; missing one can hurt it the same way a missed EMI on any loan would.

If the discount amounts are genuinely equal, a straight cash discount is usually better, because it doesn't lock you into fixed monthly payments or (on some cards) reduce your available credit limit for the tenure. No Cost EMI mainly helps cash flow — spreading a large purchase into smaller monthly amounts — rather than saving you more money than an equivalent upfront discount would.

Yes — a known trick is inflating the product's usual price first, then presenting the no-cost EMI price as a special "0% interest" deal that isn't actually cheaper than the item's normal cash price elsewhere. Before accepting a no-cost EMI offer, compare the total EMI cost against the same product's regular cash or UPI price from another seller to confirm the discount is genuine.