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Market Basics

What a loan actually costs: flat rate, reducing balance and "no-cost" EMI

The same loan can be quoted at 10% or at 18% without either number being false. Converting a quote, pricing the fees, and reading a no-cost EMI.

Market BasicsAdvanced13 min read
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A dealer offers you ₹3 lakh over three years "at ten per cent". A bank offers you the same ₹3 lakh over three years at fourteen. The dealer's instalment is larger than the bank's and you notice it, but by then the paperwork is out and the delivery is scheduled. Neither party has lied to you. They have quoted two different quantities using the same word, and the arithmetic that converts one into the other takes about a minute and is almost never done at the counter.

Think of it like this
Rent on rooms you have already handed back

You take a three-room floor on rent for three years and agree to hand back one room at the end of each year. At the end of year one you are living in two rooms, at the end of year two in one. The rent never changes, because it was fixed on the day you moved in, against all three rooms.

In the market

That is flat-rate interest. It is charged on the amount you originally borrowed, for the full tenure, even though you have been giving the principal back month after month. By the last year you are paying interest on money you repaid two years ago.

Two ways of charging interest

Flat rateReducing balance
Interest is computed onThe original amount borrowed, for the whole tenureWhatever is still outstanding this month
As you repay principalThe interest charge does not changeThe interest portion of the EMI falls every month
Where you meet itConsumer durable finance, some vehicle and gold loans, many informal lendersHome loans, most bank personal loans, credit cards
The headline numberLooks low, because the base never shrinksLooks higher, and is measured honestly
Roughly equivalent toClose to double the same figure on a reducing basis, for a fully repaid term loanItself — this is the comparable figure
Worked example
Converting a flat quote into a real rate
₹3,00,000 for 36 months, quoted at "10% flat", with a 2% processing fee
Interest, flat basis₹3,00,000 × 10% × 3 years, computed on the full amount every year₹90,000
Total repayablePrincipal plus that interest₹3,90,000
Monthly instalment₹3,90,000 ÷ 36₹10,833
Rate that produces the same EMI on a reducing basisAt 18%, the EMI on ₹3,00,000 for 36 months works out at ₹10,844About 17.9% a year
Processing fee deducted upfrontYou receive ₹2,94,000 and repay on ₹3,00,000₹6,000
Effective rate once the fee is countedSame instalments, less money actually receivedAbout 19.4% a year
Interest paid over three yearsOn a loan whose average outstanding balance was well under ₹3,00,000₹90,000
The quote said ten. The loan costs about nineteen. Nothing improper has happened — a flat rate is a legitimate way of computing interest and the lender disclosed it. What has happened is that you compared a flat number with a reducing number, and those are not the same kind of number. The reliable shortcut for a fully repaid term loan: a flat rate is close to double itself on a reducing basis, and fees push it further.

"No-cost" EMI, taken apart

Nobody lends money for nothing. When a purchase is offered on a no-cost EMI, the interest exists somewhere in the transaction; the question is only which pocket it comes out of and whether you were shown it. There are three ordinary constructions, and they are not equivalent for you.

The three shapes a no-cost EMI takes
  1. 1
    The discount you would otherwise have received is withheld

    The item sells for ₹80,000 on EMI and ₹74,000 to somebody paying outright. You are financing ₹80,000 and the ₹6,000 you did not get is the interest. This is the commonest form and the hardest to see, because you never learn what the cash price would have been unless you ask for it.

  2. 2
    Interest is charged and returned as a discount or cashback

    The lender charges its normal rate, and the merchant reimburses it. The economics can genuinely be free to you — but the reimbursement is often conditional, sometimes arrives across several statements, and is forfeited if you foreclose the loan early.

  3. 3
    Interest is waived and the tax on it is not

    Goods and services tax applies to a lender's fees and charges even where the interest itself is exempt. On several schemes the processing fee, and the tax on it, remain payable regardless of the discount. It is a small amount, and it is the proof that the loan was never free.

Getting out early

The cost of a loan is also the cost of ending it, and that is settled in the sanction letter rather than at the counter. The rule that matters most to households: on floating-rate term loans to individual borrowers for purposes other than business, the Reserve Bank does not permit foreclosure or prepayment charges. On fixed-rate loans — which is what most personal, consumer and vehicle finance is — such charges are permitted, are commonly a percentage of the outstanding principal, and often come with a lock-in of some months before prepayment is allowed at all.

Two identical-looking quotes
The one to accept
  • Quoted on a reducing balance, with the annual percentage rate stated in the Key Facts Statement
  • Processing fee, documentation and insurance charges itemised in rupees
  • An amortisation schedule showing the interest and principal in each instalment
  • Foreclosure terms written down, including any lock-in period
  • Floating rate where the tenure is long, so prepayment cannot be penalised
The one to convert before accepting
  • Quoted "at ten per cent" with no mention of the basis
  • Charges described as nominal, or bundled into the amount financed
  • Only a monthly instalment quoted, with the total never stated
  • Foreclosure discussed verbally as "we can always close it early"
  • A bundled insurance premium added to the loan, which is then financed at the loan rate
Check yourself

A dealer offers ₹2,00,000 over two years at "8% flat" and a bank offers the same amount over two years at 14% reducing. Which is cheaper, and roughly by how much?

Simple bhasha mein
Jo kamre laut chuke, unka bhi kiraya

Teen kamre ka floor teen saal ke liye liya, aur tay hua ki har saal ek kamra wapas kar denge. Saal do mein aap do kamron mein hain, teen mein nahi — par kiraya utna hi, kyunki woh pehle din teeno pe tay hua tha. Flat rate isi tarah chalta hai: interest poori original raqam pe lagta hai, chahe aadha principal aap laut chuke ho. Isiliye 10% ka flat quote reducing basis pe kareeb dugna baith jaata hai — aur processing fee usse aur upar le jaati hai.

What to remember
  • Flat-rate interest is charged on the original amount for the whole tenure, however much you have repaid.
  • A flat rate is close to double itself on a reducing basis; fees deducted upfront raise it further.
  • Ask for the Key Facts Statement and read the annual percentage rate, not the headline rate.
  • No-cost EMI hides the interest in a withheld discount, a conditional refund, or the tax on charges.
  • Foreclosure charges are barred on floating-rate loans to individuals and permitted on fixed-rate ones.

Common questions

Short, direct answers to what people ask about this topic.

flat rate and reducing balance difference
Flat-rate interest is computed on the amount you originally borrowed for the entire tenure, while reducing-balance interest is computed each month on whatever is still outstanding. Because you repay principal every month, a flat rate keeps charging you for money you handed back long ago. For a fully repaid term loan a flat rate works out close to double the same figure on a reducing basis, which is why the two numbers cannot be compared side by side.
interest charged on the full amount borrowed for the whole tenure is known as
A flat rate. It is the basis used in most consumer durable finance, a good deal of vehicle and gold lending, and by informal lenders, and it produces a headline number that looks low precisely because the base never shrinks. Reducing-balance interest — used on home loans, most bank personal loans and credit cards — is the comparable figure.
what is 10 percent flat rate in reducing balance terms
Close to 18 per cent a year, before any fees. On ₹3,00,000 for 36 months a 10 per cent flat quote produces ₹90,000 of interest and an instalment of about ₹10,833 — the same EMI a reducing-balance loan at roughly 18 per cent would produce. A 2 per cent processing fee deducted upfront pushes the effective rate to around 19 per cent, because you repay on ₹3,00,000 while receiving ₹2,94,000.
is no cost emi actually free
No — the interest exists somewhere in the transaction, and the only question is which pocket it comes out of. Most often the cash discount you would otherwise have been given is simply withheld, so you finance the higher price; sometimes the lender charges its normal rate and the merchant reimburses it, conditionally and forfeited if you close early; and goods and services tax on the lender’s fees stays payable even where the interest itself is waived. Asking for the outright cash price is what makes the cost visible.
can a bank charge foreclosure charges on a personal loan
On floating-rate term loans taken by an individual borrower for a purpose other than business, the Reserve Bank does not permit foreclosure or prepayment charges. On fixed-rate loans — which is what most personal, consumer-durable and vehicle finance is — such charges are permitted, are commonly a percentage of the outstanding principal, and often sit behind a lock-in of some months before prepayment is allowed at all. The terms are in the sanction letter, which is the document to read before signing rather than when you want out.