How this is worked out
EMI stands for equated monthly instalment, and the arithmetic is the standard annuity formula every lender uses:
EMI = P · r(1+r)ⁿ ÷ ((1+r)ⁿ − 1)
where P is the amount sanctioned, r is the annual rate divided by twelve and n is the number of months. Each month the interest is charged on what is still outstanding and the rest of the EMI reduces the principal — this is a reducing-balance loan, which is what every regulated lender in India offers on a personal or car loan.
The number to watch for is a flat rate. A flat rate charges interest on the full original amount for the whole term, not on the reducing balance. It sounds smaller and costs far more: as a rule of thumb a flat rate is close to double its reducing-balance equivalent, and it turns up in dealer finance, consumer-durable schemes and some gold and two-wheeler loans. If a quote says "flat", it is not comparable with anything on this page.
A processing fee does not change the EMI, because lenders deduct it from what they disburse rather than adding it to the instalment. It changes what the loan costs you, so it is counted in the total here. If yours is capitalised into the principal instead, add it to the amount and leave the fee at zero.
The prepayment comparison runs the formula again on the reduced balance. A part-payment early in the term removes a great deal of interest; the same money paid in the final year removes almost none, because by then almost all of the EMI is principal.
A worked example
- Amount borrowed
- ₹5,00,000
- Rate / term
- 12.5% over 5 years, reducing balance
- Monthly payment
- ₹11,248.97
- Total interest
- ₹1,74,938
- Total repaid
- ₹6,74,938
- Processing fee at 1.5%
- ₹7,500 plus GST, deducted before disbursal
- The same loan quoted "flat" at 12.5%
- ₹3,12,500 of interest — ₹1,37,562 more
Flat rate against reducing balance
On a reducing-balance loan of ₹5,00,000 at 12.5% over five years, the interest comes to ₹1,74,938, because you only ever pay interest on what is still outstanding. On a flat-rate loan at the same quoted 12.5%, the interest is 12.5% of ₹5,00,000 every year for five years — ₹3,12,500. Same rate on the page, nearly twice the money.
The reason is that a flat rate ignores every rupee you have already repaid. By the final year of a reducing-balance loan you owe about a fifth of what you started with and are charged interest on that fifth; a flat-rate loan charges you as though you still owed the lot.
Regulated banks and NBFCs quote reducing-balance rates on personal and car loans. Flat rates survive in dealer finance, no-cost-EMI consumer-durable schemes, some gold loans and some two-wheeler loans. If you see a flat rate, roughly double it before comparing it with anything here — and ask for the reducing-balance equivalent in writing.
What a processing fee really costs
A processing fee of 1–2% of the sanctioned amount plus GST is close to universal. On ₹5,00,000 at 1.5% that is ₹7,500 before GST. It is deducted from the disbursal, so you borrow ₹5,00,000, you owe EMIs on ₹5,00,000, and about ₹4,91,150 reaches your account.
That gap is why the advertised rate understates the cost of a short loan. On a five-year term a ₹7,500 fee adds a little over a tenth of a percentage point of effective cost; on a one-year loan for the same amount it adds well over a full point. The shorter the term, the more the fee matters.
Other charges worth asking about before you sign: documentation or stamp charges, a mandatory insurance premium bundled into the loan, cheque-bounce and late-payment fees, and the prepayment charge. Ask for the schedule of charges as a document rather than as a verbal assurance.
Prepayment, foreclosure, and when the rules protect you
Prepaying reduces the principal, so every subsequent month's interest is charged on less. You can normally choose whether the EMI falls and the term stays, or the EMI stays and the term shortens. Keeping the EMI and shortening the term saves considerably more interest, and almost nobody is offered that choice unless they ask for it.
Timing dominates. A part-payment in year one removes interest that would have accrued across the remaining four years; the same amount in year five removes a few months of interest on a small balance. If you are going to prepay, early is worth much more than large.
Prepayment and foreclosure charges are contractual and vary by lender and by loan type. The Reserve Bank of India has progressively restricted them on floating-rate loans to individual borrowers; fixed-rate personal loans commonly still carry a charge of a few per cent of the outstanding amount. Read the clause in your own agreement — this is one of the few places where the terms genuinely differ between two lenders quoting the same rate.
Credit score, and what actually moves the rate you are offered
The advertised "starting from" rate goes to borrowers with a strong credit history, a salary account with the lender, and a stable employer on their approved list. Everyone else is offered something higher, and the gap between the two can be several percentage points — far more than the difference between one lender's advertised rate and another's.
That makes shopping around worth real money, but it has a cost: every formal application is a hard enquiry on your credit report, and a cluster of them in a short window reads as distress. Ask for an indicative rate or a soft-check pre-approval before submitting full applications.
A secured loan against property, gold or securities prices several points below an unsecured personal loan, because the lender's risk is different. So does a top-up on an existing home loan. Those are not always the right answer — you are putting up an asset — but they are worth pricing before accepting an unsecured rate.
Assumptions and sources
- EMI formula
- The standard annuity formula, computed on a reducing balance. Verified in tools/test/finance.mjs against an independent amortisation schedule.
- Flat against reducing comparison
- Computed by this page from the inputs you enter, not quoted from a lender. Flat interest = principal × rate × years; reducing interest is the annuity result. checked 2026-09
- Processing fees and charges
- Stated as ranges commonly seen on Indian personal loans rather than as any particular lender's tariff. Your sanction letter and schedule of charges are the authority for your loan.
- Prepayment charges
- Contractual and lender-specific, with RBI restrictions that differ between floating and fixed-rate loans to individual borrowers. The clause in your own agreement governs. checked 2026-09