Monetary Policy: How Rates Are Set and What They Target
Monetary policy is the deliberate use of the price and quantity of money to shape conditions in an economy. The lever is usually one short term interest rate. The target is usually inflation, sometimes alongside growth or employment. The rate is not the goal. The rate is the nearest thing an authority can actually set, and everything it cares about sits several steps further on.
Monetary policy stands on two ideas that are built elsewhere. The first is inflation, meaning the pace at which the general level of prices is rising and the published series that measure it. The second is the cycle, meaning the pattern of an economy running above and then below what it can sustainably produce. Both are set out separately and both are used here as they stand. Inflation and the cycle are ordinarily things to observe and describe. Under monetary policy they become the conditions an authority is reacting to, and a rate is the reaction. Everything that follows is the awkward business of pulling one thing in order to move a different thing that sits some distance away from it.
What is monetary policy, and what is the one distinction that decides everything after it?
Monetary policy is what an authority does to the price and quantity of money in order to shape what happens in the wider economy. The price of money is an interest rate. The quantity of money is how much of it is available to be lent and spent. An authority moves one or both, and it does so with a purpose that has nothing to do with interest rates as such. The authority wants prices to rise at a steady, predictable pace, and depending on the mandateThe set of aims an authority has been formally given, and the powers it has been given to pursue them. Who writes a mandate, and what a particular one contains, is set out separately. it has been given it may also want activity or employment to hold up while that happens.
Now the distinction, and it is the one to carry away even if nothing else stays. The authority sets a rate it controls completely, and it wants an outcome it controls not at all, and every difficulty in this subject lives in the distance between those two things. The policy rate is announced and it is that number, exactly, from the moment it is announced. Nobody negotiates it down. The pace at which prices rise across a whole economy, by contrast, is the summed result of millions of separate decisions taken by shopkeepers, landlords, transport operators, wage setters and firms, none of whom took a call from anybody.
The abstract version is slippery, so here is the everyday one. A large wedding venue can set exactly one thing: the price it charges for a hall booking. The venue cannot set how many weddings happen in the district next winter, and its year depends on exactly that. So it moves the one number it can move, hoping the number it cares about follows, and it discovers each season whether it did. The venue has an instrument and an objective, and they are not the same object. An authority running monetary policy is in that position permanently, on a much larger scale, and with a public record of every attempt.
In monetary policy, which is the lever and which is the target?
What does monetary policy actually target, and why must the target be published?
Usually inflation. Sometimes inflation with a second aim standing beside it, most often the level of activity or of employment, in which case the authority has to state how it weighs the two when they pull in opposite directions. The reason inflation is the standard choice is not that prices matter more than jobs. The reason is that a price levelA single index number summarising what a fixed basket of goods and services costs, so that the change in the index across two periods can stand for the change in prices generally. is measured by a statistical officeThe public body that compiles official series for a country, running the surveys and collections behind them and issuing each series on a published schedule., published on a schedule, and available to everybody at the same moment. An aim that can be measured on a published series is an aim somebody outside the building can score.
The whole argument for a published number can be stated bluntly. A reader can verify the authority against a published target, and that is why a published number does more work than a stated good intention ever can. Consider what a good intention actually offers. Stable is whatever the authority later says it was, so an authority promising stable prices has given a reader nothing to check. An authority that publishes a number has handed over a subtraction anybody can do. The Republic of Sankhya, an invented economy, publishes a target of 5.00 per cent. If its statistical office measures inflation at 7.40 per cent, the miss is 2.40 percentage points, and a schoolchild with the two releases can work that out. Nobody has to be admitted to any room.
Notice what the published number does not do. The number does not make the authority right, it does not make the outcome arrive, and it does not settle the argument about whether the target was set at a sensible level in the first place. The published number makes the argument possible. Before a number is published there is nothing to argue about except intentions, and intentions cannot be checked by anybody. The design of the target and the design of the publication are therefore the same act.
Why is a target usually a published number rather than a stated intention to keep prices stable?
Who sets the policy rate, and is the decision a formula or a judgement?
Somebody sets it, and the arrangement matters less than the fact that the arrangement is written down. In most countries with a modern setup the decision belongs to a committee sitting inside or alongside the central bankThe public institution charged with issuing a country's currency and standing at the centre of its money and payment system. A fuller description of a central bank is set out separately., meeting on a published calendar, working from staff analysis of conditions, and announcing the result the same day. The sequence is unglamorous. Conditions are read, arguments are made, a vote is taken, a number is announced and a record follows.
The step worth slowing down on is the one in the middle. The decision is a judgement taken under uncertainty rather than the output of a formula, and anybody who presents it as a formula has removed the part that is actually hard. There are formulas, and they are useful, and every serious authority looks at what one or two of them suggest. But a formula needs inputs that nobody has: how fast the economy can grow without straining, where inflation will be a year from now, how much of an earlier move has arrived and how much is still travelling. Each of those is an estimate carrying a range, and a decision maker who feeds three estimates into a rule has produced a fourth estimate wearing the clothes of an answer.
So the honest description is this. The committee knows roughly what direction conditions argue for. The committee does not know the right size of the move, it does not know whether the last move has finished arriving, and it will not find out for several quarters. Not deciding is also a decision, so the committee decides anyway and writes down why. The writing down is not decoration. The written reasoning is the only part of the process that can be examined afterwards by somebody who was not there.
Someone claims a policy rate decision is simply the output of a standard rule. What is the strongest objection?
What kind of body is the RBI Monetary Policy Committee?
In India the decision on the policy rate belongs to the Monetary Policy Committee of the Reserve Bank of India. The arrangement behind that sentence teaches more than the headline does. A committee takes the decision, so several people settle it rather than one. Its members are appointed under a stated procedure. A voting procedure settles the decision by a count and not by whoever speaks last. And a published record carries the vote and the reasoning out of the room.
A published record lets anybody outside the process see how the vote split and read the reasoning each member gave, without being admitted to anything. That is a genuinely unusual property for a decision of this size. A split vote tells a reader that the case was arguable and shows which way the disagreement ran. A unanimous one tells a reader something different. The stated reasoning lets somebody check, months later, whether the case that was made at the time held up, and that check is available to a student, a lender, a journalist and a critic on identical terms.
The figures themselves behave differently from the arrangement. Every rate, decision, date, member name and target number for the Reserve Bank of India is published, and every one of them changes. A rate stops being the rate the moment the next decision is taken, so the names, the numbers, the dates and the votes are true only at the publication that issues them, and the reference table below names those publications.
Where does a reader in India go for the figures themselves?
The Reserve Bank of India sets out its decision on the policy rate in a monetary policy statement issued on a published calendar, and the record of the Monetary Policy Committee, carrying each member's vote and each member's stated reasoning, is issued separately. The measured price series that a target is checked against is compiled by the Ministry of Statistics and Programme Implementation. Every one of those figures changes, so the rates, the decisions, the dates, the votes, the members, the target numbers and the current stance belong to the issuers that publish them. Repo rateThe name of one specific instrument in the Indian arrangement, under which a bank borrows from the central bank against securities for a short period. The mechanics of the instrument and how it sits alongside the others are set out separately. and the other instrument names that appear at the source are real names for real instruments; the mechanics of each are covered separately, and every figure attached to them must be taken from the issuer on the day it is needed.
What kind of body is a monetary policy committee?
What is a Dovish Monetary Policy, and why is it a lean rather than a level?
A dovish monetary policy is a stance that leans toward supporting activity, and accepts more inflation risk in order to do it. The word stance is doing real work in that sentence. A stance is not a number and it is not a decision. A stance describes which of two risks an authority is currently more willing to run, given the conditions it is looking at. Every authority faces the same pair. Push too hard against prices and activity suffers. Support activity too generously and prices run. Leaning dovish means the authority is, at this moment, more prepared to live with the second risk than the first.
Most readers go wrong here, and the error is a natural one. A stance describes which risk an authority is currently more willing to run rather than where the number happens to sit, so a stance is a direction of lean and not a level, and an authority can be dovish at a high rate and hawkish at a low one. The test is not the height of the rate. The test is the rate read against the conditions surrounding it.
Work the two cases and the claim stops being abstract. Sankhya, invented, sits at a policy rate of 9.00 per cent while prices are rising at 11.00 per cent. Money is costing borrowers less than the pace at which prices are climbing, so the real interest rateAn interest rate after the pace at which prices are rising has been taken out of it, so it describes the cost of borrowing in terms of goods rather than in terms of money. is minus 2.00 per cent, and a rate of 9.00 per cent is leaning toward supporting activity. Now a second Sankhya, also invented, sits at 3.00 per cent while prices rise at 1.00 per cent. The real rate is plus 2.00 per cent and that authority is leaning against activity. The nominal gap between the two is 6.00 percentage points, or 600 basis pointsOne percentage point cut into a hundred pieces, so a quarter of a point comes to twenty five of them. The unit exists because rate movements are small enough that whole percentages lose the detail., and the leans point the opposite way from the levels.
The full comparison of a dovish stance against its opposite, criterion by criterion, is set out separately. The point to carry is what kind of thing a stance is. Reading a rate on its own will never reveal one.
Can an authority be running a dovish stance while its policy rate is high?
Why is the rate the lever rather than the goal?
Because between the rate and the prices it is aimed at sits a long chain of other people making their own decisions, and the authority is present at none of them. The rate is set in one room. The rate then has to reach the money marketWhere very short dated lending happens, mostly among banks and other large holders of cash, with a good deal of it repaid the next morning. An authority's operations inside the money market are set out separately., where money is lent overnight, then the banks that fund themselves there, then the terms on which those banks are willing to lend, then the borrowers deciding whether to take a loan at all, then the spending those borrowers do or do not do, then the thousands of firms that look at their order books and set prices for next quarter. Only after all of that does the number the authority is measured on move.
The lever is chosen for what can be controlled and the target for what matters. Those are different criteria, and that is exactly why the two are different things. If the authority could set the price level directly it would have no use for an interest rate at all. The authority cannot, so it picks the thing furthest along the chain that it can still set exactly, and accepts that everything downstream is influence rather than control.
Two consequences follow, and both explain behaviour that otherwise looks strange. The first is delay: a move takes time to reach the far end, and the arithmetic of that delay, including how much of a change survives each link, is worked out separately. The second is leakage: not all of a change arrives. Some of it stops at each link, absorbed by a lender's own funding position, a borrower who was never going to borrow, or a firm whose prices were set by something else entirely. An authority moving a rate is not delivering a change to the price level. The authority is starting a change and watching how much of it turns up.
Why is the policy rate described as the lever rather than the goal?
What does the same 6.00 per cent look like under two different sets of conditions?
Time to put a number on the table and keep it there. Sankhya runs a policy rate of 6.00 per cent, with a deposit floor of 5.75 per cent underneath it and a lending ceiling of 6.25 per cent above it. The floor and the ceiling sit 25 basis points either side of the middle figure, making a band 50 basis points wide, and how that band works to pen the market rate between its edges is set out separately. Only the middle figure is used here, and it does not move.
Sankhya publishes an inflation target of 5.00 per cent. Read the policy rate against that and against where the economy is sitting in its cycle, and the same 6.00 per cent produces two completely different descriptions.
| The reading | First set of conditions | Second set of conditions |
|---|---|---|
| The policy rate, Sankhya, invented | 6.00 per cent | 6.00 per cent |
| Inflation running | 9.00 per cent | 2.00 per cent |
| Against a published target of | 5.00 per cent | 5.00 per cent |
| Where the economy is sitting | Running hot, above what it can sustain | Running cold, below what it can sustain |
| The real policy rate | minus 3.00 per cent | plus 4.00 per cent |
| The stance this describes | Leaning dovish | Leaning hawkish |
The Sankhya policy rate of 6.00 per cent, the published target of 5.00 per cent and every condition set against them are illustrative. Rates are carried to two decimals and a percentage point is split into a hundred basis points wherever a small movement needs naming.
Look at the last two rows and then look at the first. The rate is the same number in both columns. The real policy rate differs by 7.00 percentage points, or 700 basis points, and nobody moved anything. In the first column the authority holds a rate that costs borrowers less than the pace prices are climbing, while the economy is already running hot. The authority is accepting inflation risk in order not to press on activity, and that is a dovish lean. In the second the same rate costs borrowers 4.00 percentage points more than prices are climbing while the economy is running cold, so it is accepting activity risk in order to stay firm on prices, and that is a hawkish lean. Nothing on the rate line changed and the stance changed completely, and that difference is the whole content of the word stance.
The Sankhya rate is 6.00 per cent in both columns of the table. Why do the two columns describe opposite stances?
The rate is bolted down. Move the conditions and watch the stance move instead.
The panel offers no control over the policy rate: Sankhya holds at 6.00 per cent throughout. The controls move the world around the rate, the pace prices are rising and where the economy is sitting relative to what it can sustain. The scale at the top redraws as inflation moves, the shaded band between the two pins is the real policy rate, and the strip underneath slides the lean between dovish, neither and hawkish. Start at the default, where inflation sits exactly on the 5.00 per cent target and the economy is middling, then change nothing but the cycle buttons and watch the lean travel from hawkish to dovish on an untouched 6.00 per cent.
Conditions worsen over a quarter and the authority leaves the policy rate exactly where it was. Was anything decided?
The reader who hears the rate was left unchanged and concludes nothing was decided
The most common misreading of a policy announcement is not a careless one. The headline says the rate stays at 6.00 per cent. Nothing moved, so there is apparently nothing to report, and the reader moves on. The trouble is that the rate is only half the reading, and the half that did not move is the half a reader can see.
Run the two Sankhya condition sets through it. At the first reading, inflation was 9.00 per cent against a 5.00 per cent target and the economy was running hot, so an unchanged 6.00 per cent was a real rate of minus 3.00 per cent and a dovish lean. At the second, inflation had come down to 2.00 per cent and the economy had turned cold, so the same unchanged 6.00 per cent was a real rate of plus 4.00 per cent and a hawkish lean. The authority moved nothing at all and its stance travelled 700 basis points across the two readings. A reader who scored the announcement as no news scored the wrong variable.
The fix is one sentence. A stance is a relationship between two things and not a number sitting by itself, so read the rate against the conditions and never on its own. And note the second half of the trap: holding still is itself a decision. Somebody argued for a move, somebody argued against, a vote was taken and the result was a hold. A hold is a decision with a record attached, and the record is available to be read.
What does a lender actually watch when a stance shifts?
Not the rate, surprisingly enough. A lender who reads only the announced number has read the least useful part of it. A lender is trying to work out two separate things that arrive at different speeds, and only one of them is about the lender at all.
The first is its own side: what a shift in the stance means for what its own funding costs it. A lender is a borrower before it is a lender, and the terms on which it can raise money are the floor under everything it charges. The second is the borrower side: whether the households and businesses on its books can still make their payments if conditions carry on in the direction the stance implies. The lender's own side and the borrower side arrive at different speeds and in different sizes, and a lender that assumes they move together has merged two questions that answer separately.
The difference is easiest to see on the street. A vegetable seller who borrowed Rs 40,000/- for a cart pays a small fixed amount each week and is barely touched by a shift in the stance. The seller would be touched by customers spending less, which sits several links further along and arrives much later. A caterer holding Rs 12,00,000/- of bookings for the coming season is exposed in a different way entirely. The bookings can be postponed by exactly the households whose spending a tighter stance is meant to slow. Same shift, same street, two completely different exposures and two different arrival times. A lender that has both on its books needs both readings, and the mechanics of a bank's own pricing are another subject area altogether, covered separately.
Which door leads to the numbers themselves?
A rate stops being true the moment the next decision is taken, and a reader carrying one away has learned something that has quietly expired. The doors below lead to the bodies and documents that publish those figures. Every rate, every date, every vote and every target comes from the body that published it.
| Body | The document to open | Site |
|---|---|---|
| Reserve Bank of India | The monetary policy statement, where the decision on the policy rate is set out together with the reasoning that sat behind it | rbi.org.in |
| Reserve Bank of India | The record of the Monetary Policy Committee, where each member's vote and each member's stated reasoning are set down separately | rbi.org.in |
| Ministry of Statistics and Programme Implementation | The consumer price index release, which is where a price level gets measured rather than asserted, and against which a published target becomes checkable | mospi.gov.in |
| Bank for International Settlements | Compiled material on how central banks elsewhere arrange the same lever, useful for seeing that the arrangement described here is one arrangement among several | bis.org |
The Republic of Sankhya is invented.
Educational material. Not advice on any investment, tax, budget or market position.