Before you believe the number

Sounds good.
Really?

Let's check. We run the maths behind life's consequential money decisions.

Is your no-cost EMI actually free?

Four numbers. Prefilled with a typical offer, so change whatever does not match yours. Nothing you type leaves this page.

Not really₹3,884

more than paying cash, once the forgone discount and the fee are counted. That is 18.4% a year on the ₹41,116 you actually financed, so it is also the return you would need to beat by keeping the cash.

₹3,750 × 12 = ₹45,000, plus ₹884 of fee and tax, against ₹42,000 in cash.

Includes GST at 18% on the fee. Not checked: bundled protection, late payment charges, or any effect on your credit limit. See the full working.

On the list

  • Prepay the loan, or invest the money?
  • What is this policy actually returning?
  • What are my ESOPs actually worth?
  • Rent, or buy?

One check is live. These are the ones we are working through.

See what we mean
01

The principle

Every number has a point of view.

Sellers show you the number that helps you buy. Really? checks the same decision from your side of the table.

02

The method

From claim to clarity.

  1. 01

    Claim

    “It's 0% interest.”
  2. 02

    Check

    Price. Fees. Tax. Time.
  3. 03

    Reveal

    The cost that actually matters.

No black box. No product push. Every number here, you can rebuild yourself.

03

A worked example

The example

Is No-Cost EMI
actually free?

Compare the offer with the cash price. Add back the discount, fees, taxes, and time. Here is that check, run in full, on a typical offer.

The claim

12 months. No cost. (struck) 0% interest. (queried)

Struck: the discount you give up is a cost. Queried: the rate is not the price.

Basis
Cash price
GST
18%, from 2026
Figures
₹, rounded
Reviewed
23 Aug 2026
What the EMI offer costs compared with paying cash
What you pay on EMI
Instalments, 12 × 3,75045,000
Processing fee 749, plus GST884
Total on EMI45,884
What the same phone costs in cash
Cash price, after the instant discount*42,000
Not really₹3,884

more than paying cash. That is an effective 18.4% a year on the ₹41,116 you actually financed.

Not checked: protection or insurance bundled with the offer, late payment charges, and any effect on your credit limit.

Assumptions

The price the retailer offers for paying outright. Where a model carries no cash discount, this line is zero and the offer may genuinely cost nothing.
Charged upfront by the lender, not the retailer. Fees vary by lender and card. GST is 18%.
The internal rate of return that makes 12 instalments of ₹3,750 equal ₹41,116 today, that being the cash price less the upfront fee. Reproducible in any spreadsheet as (1 + RATE(12, −3750, 41116))^12 − 1, compounding the monthly rate of 1.4168%. It is not the lender's stated rate.
Figures are illustrative of Indian no-cost EMI offers rather than one retailer's.
Not every claim fails

The same check, other answers.

The maths has no mood. Run it on a different offer, or against a different alternative, and it lands somewhere else. Really? checks the claim; it does not decide how you should feel about it.

Yes, really₹0

A second offer on the same phone, with no cash discount and no fee. Nothing forgone, nothing charged. This one is what it says it is.

It depends18.4%

If you would invest the ₹42,000 rather than spend it, that is the return you need to beat. Above it the EMI is the better use of your money. Below it, cash is.

Really?

Check the maths. Then decide.

The first check is coming to really.run.

Bring a claim