How to read your bank loan sanction letter — and the number it doesn't show you plainly

A powerloom owner on Ring Road gets a term-loan sanction letter for a new warping machine and reads two numbers on it: the loan amount and the interest rate. Satisfied both look reasonable, the letter gets signed and filed away. That's the whole review, for most borrowers, most of the time. It's also exactly backwards — the sanction letter has at least six clauses worth reading, and the number that actually determines what the loan costs isn't printed on it at all. It sits in a separate document the bank is now legally required to give you.

What a sanction letter actually is

A sanction letter is the bank's written offer — confirmation that your loan file has been approved, on the terms it states, subject to conditions it lists. It is not the loan agreement. It usually carries a validity period — commonly around six months, though this varies by bank — within which you must accept the offer and draw the loan, or it lapses and the file has to be re-appraised. The document you sign when the loan is actually disbursed, the loan agreement, is what legally binds you; the sanction letter is what tells you, in advance, what that agreement is going to say. Reading it closely before you accept is the only real opportunity to question a term, ask for a change, or walk away — once the loan agreement is signed and money has moved, you're negotiating from a much weaker position.

The sanction letter is where you find out what you're agreeing to. It is not, itself, the agreement.

Six clauses, not two

The diagram above sets out what's actually on a typical sanction letter for a term loan. Clause 1 — amount and purpose — sounds obvious but matters: a loan sanctioned for machinery purchase and used instead to plug a working-capital gap is a covenant breach the bank can act on, even if every EMI is paid on time. Clause 2 is the rate — and for any floating-rate MSME or retail loan, this has had to be linked to an external benchmark (in practice, almost always the RBI repo rate) since an RBI circular effective 1 October 2019, with the rate reset at least once every three months. The number on your sanction letter is the rate on the day it was written, not a number that holds for the life of the loan — the next repo move changes what you actually pay within one quarter.

Clause 3 — tenure, moratorium and repayment — is where a mismatch between what your business actually needs and what the bank has structured shows up early: a moratorium too short for a new unit to start generating cash flow is a problem worth flagging before disbursement, not after the first EMI bounces. Clause 4, margin or promoter's contribution, is the portion of the project cost you must fund from your own resources before the bank releases its share — get this wrong and the project stalls halfway, waiting on your money rather than the bank's.

Security, and the clause everyone skips

Clause 5 lists security and guarantors — the collateral pledged, assets hypothecated, and any personal guarantees required, or a note that the loan is covered instead by a credit guarantee scheme such as CGTMSE, with no collateral asked at all. Clause 6 — fees, insurance and prepayment terms — is the one most sanction letters state in the smallest print and most borrowers skip entirely, which is unfortunate, because it is also where the gap between the quoted rate and the real cost of the loan actually lives.

The number the sanction letter doesn't show you plainly

Since 1 October 2024, every bank, NBFC and co-operative bank has been required to give retail and MSME term-loan borrowers a separate document — the Key Facts Statement (KFS) — before the loan agreement is signed, under RBI's Key Facts Statement circular of 15 April 2024. (Note the scope: this applies to term loans; a cash-credit or overdraft working-capital limit is not covered by this particular requirement.) The KFS has to be in a language the borrower actually understands, its contents explained to the borrower, and an acknowledgement taken that they understood it. Buried in fine print inside a sanction letter, this document is not — it is meant to stand on its own, in simple language, specifically so a borrower can compare it against what they were quoted verbally.

The single most useful number in the KFS is the Annual Percentage Rate (APR) — the true, all-in annual cost of the loan, computed on a standard formula (RBI's own worked examples sit in Annex B of the circular) that folds in the interest rate and every other charge: processing fee, documentation and CERSAI charges, any insurance premium financed into the loan, and other recurring costs — spread over the loan's actual repayment schedule. The KFS also has to carry a computation sheet showing exactly how that number was arrived at, an amortisation schedule breaking every instalment into principal and interest, the bank's clause on engaging recovery agents, and a "cooling-off" period — a minimum of one day, set by the bank's own board — during which you can back out without a penalty. Ask for this document by name if it isn't offered. It is not optional paperwork; it is a specific legal entitlement for a term loan taken on or after that date.

An illustrative Surat example

Take a Udyam-registered diamond-polishing unit in Varachha, sanctioned a ₹25 lakh, 7-year term loan for two additional cutting-and-polishing machines. (All figures below are illustrative.) The sanction letter quotes: repo-linked, spread 3.00% over the benchmark, effective rate 9.50% p.a. floating, reset quarterly. Read on its own, that 9.50% looks like the cost of the loan. The KFS tells a fuller story: a one-time processing fee of 1% plus GST (₹29,500), a first-year machinery insurance premium of ₹22,000 financed into the loan rather than paid upfront, and documentation/CERSAI charges of ₹1,500 — all spread across the repayment schedule using the APR formula. On these illustrative numbers, the APR works out to roughly 10.30–10.40% — nearly 85 basis points above the quoted rate. That gap doesn't mean anything was hidden or improper; it means the quoted rate was never the full cost to begin with, and the KFS is the document that says so in one number.

Two things that changed recently, and one that quietly disappeared

Two clauses on a sanction letter are worth reading with 2026 rules specifically in mind, because a letter drafted from an older template can still show the older position. First, the reset clause on any floating-rate MSME or retail loan has been RBI-mandated since 2019 to move at least quarterly, tracking the external benchmark — a rate that looks fixed and favourable on the day you sign is not going to stay that way if the repo rate moves, and no fresh sanction letter is issued each time it resets. Second, and more recent: under the RBI (Pre-payment Charges on Loans) Directions, 2025 (RBI/2025-26/64, 2 July 2025), for loans sanctioned or renewed on or after 1 January 2026, most lenders can no longer charge a foreclosure or prepayment penalty on a floating-rate loan to a Micro or Small Enterprise, up to an aggregate sanctioned limit of ₹7.5 crore per borrower — a clause that used to routinely appear on sanction letters, and that many borrowers still assume applies by default. If your sanction letter still quotes a foreclosure charge on a floating-rate loan within that limit, it's worth asking the bank to confirm whether that clause is even enforceable anymore, rather than assuming an older printed template is correct.

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This article is general information, not professional advice. Rules change; verify current provisions or contact the office for advice on your situation.