What the 10-year bond yield is, and what a rise reprices

What a bond yield is

A government bond is a loan to the state. The buyer hands over money today, receives a fixed payment every year called the coupon, and gets the face value back on a set date. It is written on the bond when it is issued and never changes.

Price is another matter, because the bond is bought and sold every day. The yield is the annual return you earn if you buy at that day's price and hold to the end. Take an illustrative bond with a face value of ₹100, a coupon of ₹7 a year and ten years left. Bought at ₹100, it yields 7 percent.

Now suppose new ten-year bonds start paying 8 percent. Nobody pays ₹100 for a bond that pays ₹7 when ₹8 is on offer elsewhere. The price has to fall until a buyer earns 8 percent on it. Discounting the ten coupons of ₹7 and the ₹100 repayment at 8 percent gives ₹46.97 plus ₹46.32, which is ₹93.29.

The price fell by ₹6.71, and the yield rose from 7 to 8 percent. Those are the same event seen from two sides. Take a ₹1 crore holding of this bond. Its value on the statement drops to ₹93.29 lakh, a fall of ₹6.71 lakh. No default and no missed coupon is involved.

Coupon yield and full yield also differ. The ₹7 coupon on a ₹93.29 price is 7.50 percent (7 divided by 93.29). The full yield is 8 percent, because the buyer also collects the ₹6.71 gap between price and face value when the bond is repaid.

Why the 10-year is the one that matters

India's government issues bonds at many maturities, and the ten-year is the benchmark. It is the point on the curve with the most buying and selling. Loan pricing, corporate bond pricing and valuation models all refer to it.

It works as a reference because the state borrows in its own currency and can meet a rupee promise in rupees. So the government's ten-year yield is the rate a lender accepts with no credit worry. Every other rupee borrower has to pay more than that, and the extra is the price of the risk that the borrower does not pay back.

A company loan, a bank's lending rate and the return a shareholder demands are each quoted as the sovereign yield plus a premium. When the base moves, everything built on it moves with it.

Why it rose on 28 September 2026

The Economic Times, carrying a Reuters report, described the move on 28 September 2026 (read 29 September 2026). The benchmark 6.94% 2036 bond yield climbed 6.5 basis points to 7.1848 percent, its highest level since April 2024. A basis point is one hundredth of a percentage point, so 6.5 basis points is 0.065 percentage points. The previous level was therefore 7.1198 percent (7.1848 minus 0.065).

That report gives three reasons, starting with supply. The government's October-March borrowing calendar tilted issuance toward 15-year and ultra-long securities and away from the liquid five-year and ten-year bonds. According to the report, that mix sharpened duration risk, the risk of falling bond prices as interest rates rise. The RBI also completed ₹1 trillion of net debt sales that day, its biggest annual net bond sale in more than a decade, which adds bonds to the market.

Globally, the 10-year US Treasury yield rose 5 basis points to 5.23 percent, at over two-decade highs, and Brent crude gained 4 percent to stand above $108.

On rates, the report says traders expected the RBI to raise its policy rate, which would be its first increase since February 2023. Investors avoid longer-dated bonds when rates are rising, because those bonds lose the most value.

Source: Economic Times via inkl, https://www.inkl.com/news/india-10-year-yield-scales-two-year-high-as-supply-global-rout-bite, read 29 September 2026.

What a rise reprices

Every asset is worth the money it will pay in future, brought back to today at some discount rate. The sovereign yield sets the floor of that discount rate. When the floor rises, every future rupee is worth less today.

The arithmetic is short. A payment of ₹100 due in ten years is worth ₹50.83 today at a 7 percent discount rate (100 divided by 1.07 ten times). At 8 percent it is worth ₹46.32. The payment and the date stay put, and the present value falls by ₹4.51 on the rate alone.

That is why several markets are re-marked at once. Shares are claims on profits that arrive years from now, so a higher discount rate lowers what those profits are worth today. Longer bonds fall by the mechanism in the first section. Banks hold large books of government bonds, and the mark-to-market loss on that book hits their reported numbers. Gold pays no coupon, so a higher bond yield raises what holding gold gives up.

This explains why several prices move in one session for one reason, and says nothing about where any of them goes next. A portfolio that looks diversified across names can still move as one block on a rate day.

What a bond fund holder sees

Someone who holds a bond fund watches this from the statement. When yields rise, the fund's value falls, and this shows up as a loss on the screen even though the bonds inside still pay their full coupons.

The same event has a second side. Each coupon and each maturing bond is reinvested by the fund at the higher yield. The falling price and the higher income are one mechanism read at two dates. How long the fund's bonds have left decides the size of the price fall, which is the duration risk the Reuters report names.

For the ₹1 crore illustration above, a holder who keeps the bond to maturity receives every coupon and the full ₹1 crore back. The price on the statement in between is a mark, and it only becomes a loss if the holder sells at it.

What the equity market has that crypto does not

A share has a discount rate that can be read off the sovereign yield. An analyst can take 7.1848 percent, add a premium for the risk in the business, and get a required return to test the share price against.

A crypto asset has no coupon and no sovereign rate in its own unit. Nothing about it pays a fixed amount on a fixed date, so there is nothing to discount and no risk-free reference inside the asset. A rise in the rupee yield still reaches a rupee holder of crypto. It does so through what other assets now pay and through the money that holds both. The link is indirect, and no formula converts a yield move into a crypto price.

That gap is a reason to write the crypto allocation as a weight. Judge it on the drawdown it produces, and skip the day's headline as a measure.

What a holder does with the number

A yield move is a reason to open the allocation and check it against the written weights. It is a poor reason to change them.

Check how much of the portfolio is exposed to a rate move directly, in bonds and bond funds. Then check the indirect exposure, in banks and in growth shares whose profits sit far in the future. Then look at the drawdown the portfolio actually showed on the day of the move, and compare it with the drawdown the plan allowed for. A portfolio sized to survive a fall of a given depth has already answered the question before the headline arrived.

Qatobit's QSI indices rebalance monthly on a documented methodology. A rebalance checks weights against the rules and does not react to a rate headline.

For the rate side of the same story, read what a hawkish central bank does to a rupee portfolio. The claims that stocks and bonds carry explains what each is owed. Asset allocation covers the weights, and what a drawdown is covers sizing a position to survive one. A crypto index is the crypto version of a written weight.

Each time the sovereign yield moves, every other rupee price has to be read against the new number.

Frequently asked questions

What is the India 10-year bond yield?

It is the annual return a buyer of the Indian government's ten-year benchmark bond earns at that day's price. The 6.94% 2036 bond stood at 7.1848 percent on 28 September 2026, according to a Reuters report carried by the Economic Times. It is the reference rate for other rupee borrowing.

Why does a bond price fall when the yield rises?

The coupon is fixed, so a buyer can only earn more by paying less. In the illustration on this page, a ₹100 bond paying ₹7 a year for ten years falls to ₹93.29 when the market yield goes from 7 to 8 percent.

What does a rising bond yield mean for the stock market?

It raises the discount rate applied to future profits, which lowers what those profits are worth today. A payment of ₹100 due in ten years is worth ₹50.83 at 7 percent and ₹46.32 at 8 percent. This describes the mechanism and says nothing about where share prices go.

What is the difference between coupon and yield?

The coupon is the fixed rupee payment set when the bond is issued. The yield is the return at today's price. A ₹7 coupon on a ₹93.29 bond is a 7.50 percent current yield, and the full yield to maturity is 8 percent.

How does the bond yield affect a crypto index?

A crypto asset has no coupon and no sovereign rate in its own unit, so the yield does not price it by formula. It is the rate the other assets on offer are measured against, which makes it the number an allocation is judged next to.

Crypto investments are subject to market risk. Not financial advice.