The yield curve and credit growth

So far the price of money has been a single number — the repo rate, today. But money has a price at every horizon. Lending for one night is not the same as lending for ten years, and the market charges differently for each. Line up the interest rate the government pays to borrow for three months, one year, five years and ten years, and join the dots, and you get a shape. That shape is the yield curve, and it is one of the most watched — and most over-read — pictures in all of finance.

The curve matters because it is the price of money spread across time, and time is exactly what a company's future cash lives in. It also gets treated as a crystal ball: an "inverted" curve, where short rates sit above long ones, is widely quoted as a recession warning. This module does two things. It teaches you to read the curve's shape honestly, as a symptom with several possible causes. And it pairs the curve — a price signal — with a quantity signal that is often more useful: credit growth, the pace at which banks are actually lending. One tells you what money costs across time; the other tells you whether money is really moving.

Start with the building block. A government bond yield is the annual return a buyer earns holding a government bond to maturity, and it moves opposite to the bond's price — when the price rises, the yield falls, and vice versa. Because the government borrows for many different lengths of time, there is a whole family of yields: overnight, three-month, one-year, five-year, ten-year, and beyond.

Join those yields across maturities and you have the yield curve — the line linking the interest rates on government bonds from short to long, whose shape summarises the market's collective pricing of money across time. Normally it slopes gently upward: lending for longer ties up your money and exposes you to more uncertainty — future inflation, future rates — so lenders demand a little extra to go long. That extra is the reward for patience and risk.

The shape moves for real reasons. Short-end yields are tugged mostly by the RBI's policy rate and liquidity — the things the last three modules covered. Long-end yields are tugged by expectations about future growth and inflation, by how much the government needs to borrow (heavy supply pushes long yields up), and by the compensation investors demand for locking money away. So the curve is not a forecast handed down from on high; it is the sum of today's supply, demand and expectations, priced maturity by maturity.

Three shapes are worth naming. A normal, upward-sloping curve — long yields above short — is the everyday case, consistent with a steadily growing economy. A steep curve, with a wide gap, often accompanies optimism about future growth, but can just as easily reflect heavy government borrowing at the long end. A flat or inverted curve — where long yields sit at or below short ones — is the one that grabs headlines.

An inverted curve is when short-term yields rise above long-term ones, so the line slopes downward. In some countries, notably the United States, an inversion has often preceded recessions, and it is quoted almost as a law of nature. Here is the honest caution: that track record comes largely from a specific market and history. India's government-bond market is shaped differently — by the RBI's operations, by the government's own borrowing needs, by who is allowed to buy — and the inverted-curve-means-recession signal has a much weaker and patchier record here. Borrowing a foreign market's rule of thumb and treating it as universal is its own kind of error.

Now the more useful companion. The curve is a price signal; credit growth — the pace at which bank lending to the economy is expanding, published fortnightly by the RBI — is a quantity signal. It tells you whether money is actually flowing into businesses and households, not just what it costs. Rising credit growth generally means demand for money is healthy and banks are willing to lend; slowing credit growth means one of two very different things — either borrowers do not want loans (weak demand) or banks will not give them (tight supply). Separating those two is the heart of reading credit well.

Put the two together and you have a fuller picture than either gives alone: the curve for the price of money across time, credit growth for whether that money is actually moving.

Read the two signals together on one composite quarter. illustrative

Suppose the yield curve steepens noticeably — the gap between the ten-year and the one-year widens. The tempting headline is "the market is pricing a recovery." Before accepting it, ask what is driving the long end. Is it genuine optimism about future growth? Or is the government running a heavy borrowing programme this year, flooding the long end with bonds and pushing those yields up for reasons that have nothing to do with recovery? The same steepening, two very different meanings — and the shape alone will not tell you which.

Now bring in credit growth. Say the fortnightly RBI data show bank lending slowing. Again, two readings. If lending rates are easing while credit slows, it points to weak demand — banks are chasing scarce borrowers. If lending rates are firm and banks are visibly tightening standards, it points to constrained supply — banks rationing credit despite willing borrowers. A lender you might be studying looks very different in those two worlds: in the first, it faces thin loan demand; in the second, it is deliberately pulling back on risk. Same slowing number, opposite stories about the bank.

Put both signals beside each other and a fuller picture emerges — say, a steepening curve driven mostly by heavy government supply, alongside credit growth slowing on weak private demand. That is a coherent read of a soft patch, and it is far richer than either signal shouting alone. But notice what you have not done: you have not predicted a recession, or the next move in rates, or the market. You have described the present with more resolution.

The curve and credit growth describe the present and the market's current pricing; they do not hand you the future. Read honestly, they sharpen your picture of where we are. Read greedily, as prophecies, they become one more confident forecast waiting to be wrong.

These are diagnostic tools, and their limits are as important as their uses.

The curve cannot reliably predict recessions in India. The famous inverted-curve signal is drawn from other markets and histories; India's bond market and borrowing dynamics differ, and the signal's track record here is weak. Treating it as a law imported wholesale is exactly the trap the shelf warns against.

The shape cannot tell you its own cause. A steep curve could be optimism or a borrowing flood; a flat curve could be rate-cut expectations or simply tight policy now. The picture is a symptom, and symptoms have several possible diseases. You must diagnose the driver separately.

Credit growth cannot tell you demand from supply on its own. A slowing number is two opposite stories — nobody wants loans, or nobody can get them — and only by looking at lending rates and bank behaviour can you tell which. The bare figure is ambiguous by nature.

And neither signal times the market. A curve and credit read describe the economy's plumbing; the market can price a slowdown long before the data confirm it, or shrug one off entirely. The plumbing and the price are two different clocks.

The curve and credit growth trip people in familiar ways.

1. Importing the inversion rule as law. "Inverted curve means recession" is a US-flavoured heuristic with a poor record in India. Borrowing a foreign signal wholesale and betting on it is a classic mistake.

2. Reading a shape as a cause. A steepening or flattening is a symptom. Announcing what it "predicts" before asking what is driving it skips the only step that could make the read reliable.

3. Taking credit growth at face value. A slowing number could be weak demand or tight supply — opposite diagnoses. Quoting the figure without asking which is happening is reading a headline, not the economy.

4. Ignoring government supply at the long end. Heavy borrowing can push long yields up and steepen the curve for reasons that have nothing to do with growth. Miss the supply story and you misread the shape.

5. Confusing description with prediction. At its best, this pair tells you where we are with more resolution. The moment you treat it as telling you where we are going, you have turned a diagnostic tool into astrology.