What “No Cost EMI” Actually Costs
The interest does not vanish. It is moved somewhere you are less likely to look for it.
No cost EMI means you pay the product price divided evenly across a few months, with nothing labelled interest. That is what appears on the screen, and it is accurate as far as it goes.
Your bank is still lending you money and still charging for it. Understanding where that charge lands is the whole subject.
How the arrangement works
The bank levies its usual interest. The seller then discounts the product by roughly that interest amount up front, so the instalments sum to about the sticker price.
The interest exists. It has been paid on your behalf out of a discount that would otherwise have been available to you.
Which produces the real question: what would this product have cost if you had simply paid for it?
The comparison to actually make
Not "no cost EMI versus regular EMI" — no cost wins that easily. The comparison is no cost EMI versus paying outright.
Frequently the same product carries an instant discount for a straight card payment that the EMI route forgoes. Where that happens, no cost EMI costs you the difference, and that difference is not disclosed anywhere on the page.
Check the cart total both ways. It takes a moment and is the only way to see the gap.
Charges that survive the label
GST on interest. The bank charges interest, the seller refunds the interest, and GST on that interest is charged to you. Small, but it is not zero, and "no cost" implies it would be.
Processing fees. Some issuers add a flat fee per EMI conversion regardless of the no-cost arrangement.
Your credit limit. The full amount is blocked immediately, not released monthly. On a modest limit this can matter more than the money.
Cancellation. Returning the product does not always unwind the EMI cleanly; interest already accrued may stay with you.
When it is a good idea anyway
Spreading a large necessary purchase across months has real value, and paying near-zero for that is a good arrangement. If cash flow is the constraint, no cost EMI is a reasonable tool.
What it is not is free, and it should not be the reason a purchase happens at all. If the deciding factor was that the monthly figure looked small, the arrangement worked exactly as designed.
Larger purchases are where this decision usually appears: browse laptops on Amazon.