The repo rate and your money

The committee of chapter 4 has one main instrument. This is what it is and how it reaches you.

The repo rate is a price for one night

The repo rate is the rate at which banks borrow from the Reserve Bank overnight against government securities as collateral. Repo is short for repurchase agreement: the bank sells securities to the central bank and agrees to buy them back the next day at a slightly higher price. The difference is the interest.

That is the whole thing. One rate, on overnight money, between the central bank and banks. You cannot borrow at it and neither can any company.

Everything else in this chapter is about how a price for one night of interbank money becomes the rate on your twenty-year home loan.

The corridor, which is the part that actually works

The repo rate is not alone. It sits in the middle of a corridor, and the corridor does the steering.

As decided on 7th October 2026:

	Rate
Standing Deposit Facility (SDF) — the floor	5.25%
Policy repo rate	5.50%
Marginal Standing Facility (MSF) — the ceiling	5.75%
Bank Rate	5.75%

The repo rate sits exactly at the midpoint of a corridor 0.50 points wide.

Here is why that shape matters. A bank with surplus cash overnight can always park it with the Reserve Bank at the SDF rate, so it will never lend to another bank for less than 5.25%. A bank short of cash can always borrow from the Reserve Bank at the MSF rate, so it will never pay another bank more than 5.75%. The market rate for overnight money is therefore trapped between the two, and the Reserve Bank steers it towards the repo rate in the middle.

The corridor is what makes a target rate an actual rate rather than an announcement. Move all three and the overnight market has to follow, because the alternatives moved with it.

How it reaches you

Three paths, at three speeds.

Your floating-rate loan, quickly and mechanically. Floating-rate retail and small business loans in India are linked to an external benchmark — for most banks, the repo rate itself — plus a fixed spread, and reset at a stated frequency, commonly quarterly. When the repo moves, your rate moves at the next reset whether or not anything about you changed. This is deliberate: the external benchmark regime exists precisely because banks used to pass on cuts slowly and increases quickly when the benchmark was internally computed.

What usually changes is the tenure rather than the EMI. On a rate rise, many lenders hold your instalment constant and extend the loan, which feels like nothing happened and is not nothing: you pay the same amount for longer, so you pay more in total. The rise is real and invisible on your statement.

Your deposits, more slowly and at the bank's discretion. Deposit rates are not benchmark-linked. A bank reprices them when competition and its own funding needs push it to, which historically means lending rates move first on the way up and deposit rates move first on the way down. Savers get the worse end of both transitions. The exercise above is to go and watch this happen.

Everything else, over quarters. Corporate borrowing costs, bond yields, the exchange rate and eventually demand itself. The textbook lag between a policy change and its full effect on inflation is several quarters — often quoted as three to four. Which produces the structural problem of the whole exercise: the committee must act on where inflation will be in a year, not where it is.

Reading one real decision

Now put chapters 3, 4 and 5 together on what actually happened.

On 7th October 2026 the Monetary Policy Committee voted unanimously to raise the repo rate by 25 basis points to 5.50%, and changed its stance to calibrated tightening.

Four things about that are worth noticing, and none of them is in the headline.

They decided before the data. The September CPI print — 5.54%, the one chapter 3 took apart — was published on 12th October 2026, five days after the decision. The committee was working from August's 4.83% and its own projections. Policy is always made on an incomplete picture, and the lag in chapter 2 is why.

They were aiming at a forecast, not a reading. The Governor's statement projected Q3 of 2026-27 at 6.0% — exactly the upper tolerance limit of chapter 4. You do not raise rates because of 4.83%; you raise them because of a 6.0% you expect in three months and the several quarters it will take you to affect it.

The real policy rate was approximately zero. Set the 5.50% repo against the 5.54% inflation that landed five days later:

real policy rate = (1.0550 ÷ 1.0554) − 1 = −0.04%

Money was costing banks, in real terms, almost exactly nothing. A policy rate at the inflation rate is neither restraining nor stimulating. The hike did not make policy tight; it moved policy from slightly loose to roughly neutral, which is what "calibrated tightening" as a stance is announcing it intends to continue.

The stance is a separate decision from the rate. The committee changes the rate and separately declares a stance — the direction it expects to lean next. A rate move with a stance change says more than the move alone, because it is guidance about the following meetings. Markets price the stance as much as the rate.

The limit worth being honest about

Chapter 4 noted that the committee was projecting headline inflation of 5.2% for the year while core inflation ran at 4.4%.

Core strips out food and fuel. Chapter 3 showed what that means concretely: a headline being driven by onion at 108% and food at 7.74%, in a month when the core of the economy was doing something much calmer.

An interest rate cannot grow onions. Raising the cost of borrowing does nothing to the monsoon, to a supply chain, or to the global oil price. What it can do is stop a food-price shock from leaking into everything else — into wage demands, into rents, into the prices of things that have nothing to do with vegetables. That leakage is called second-round effects, and preventing it is genuinely what a rate rise in this situation is for.

So the honest description of October 2026 is narrower and more interesting than "the RBI is fighting inflation". It is: the committee saw a food-driven headline heading for the top of its band, judged that the real policy rate was around zero, and tightened to stop a supply shock becoming a general one — knowing the instrument cannot touch the cause.

The point

The repo rate is the overnight rate at which banks borrow from the Reserve Bank, steered within a corridor between the SDF floor and the MSF ceiling — 5.25%, 5.50% and 5.75% as set on 7th October 2026. It reaches your floating-rate loan mechanically at the next reset, your deposits at the bank's discretion, and inflation over several quarters, which is why the committee must act on forecasts. In October 2026 it raised rates unanimously five days before the data it was worried about was published, against a real policy rate of about zero, to stop a food-price shock spreading.