How Do Bonds Work? Riya Lends Money to the City

3.1 — A promise, printed and dated

The flyover at the junction had been a rumour for so long that the hoarding announcing it read almost as a joke. But the notice pasted to it was serious, and specific. The Municipal Corporation needed ₹50 crore to build the thing. Rather than raise everyone's property tax — slow, unpopular, and years from collecting enough — it was going to borrow the money from the public.

The terms were on the notice in a small table. Lend today. Get every rupee back in ten years. And each year in between, receive interest, at a stated rate, on a stated date.

Riya read it twice, which is not a thing she had ever done to a municipal hoarding. She had spent the previous month coming to terms with the fact that her shares promised her nothing at all. Here was something offering her the exact opposite — numbers, fixed in advance, with dates attached.

She lent ₹10,000 and received a certificate. Then she took the certificate to Raj, braced for him to tell her she'd done something naive.

3.2 — What the certificate actually says

He didn't. He read it properly, which took a minute, and then said it was three promises wearing formal clothes.

• ▹**"We will return your ₹10,000 in exactly ten years."** That date is the **maturity date** — the day the loan is repaid in full.
• ▹**"Every year until then, we pay you 7%."** ₹700 a year, on schedule. That annual payment is the **coupon**.
• ▹**"Your ₹10,000 remains owed to you throughout."** That sum is the **principal**, or face value — the number every other figure is calculated from.

Principal, coupon, maturity — those three things bundled into one instrument are a **bond**. And buying one is nothing whatsoever like buying a share of Aman's bakery. Riya has not become an owner of the flyover. She has become a **lender**, and the Municipal Corporation is the **borrower**.

3.3 — Owner or lender: the same ₹10,000, two different bets

"So which is better?" Riya asked. "This, or the bakery?"

"Wrong question," Raj said. "They aren't competing. They're doing different jobs." He took the certificate back and set it on the table next to her phone, where her bakery holding was open on the screen. "Look at them side by side and ask what each one can do *to* you."

"The flyover could transform property values across the whole east side," Raj said. "Your ₹700 doesn't move. You gave up the upside to buy the certainty. That's not a worse deal. It's a different deal."

Owners take more risk chasing a bigger, unbounded reward. Lenders accept a smaller, capped reward in exchange for a scheduled promise and a better place in the queue. Almost every decision in the rest of this course is some version of that same trade.

3.4 — Why Aman would have to pay more than the city does

"Could Aman have done this instead?" Riya asked. "Borrowed the fifty lakh from people like me, rather than selling pieces of the bakery?"

"Absolutely. When a company borrows this way it's a **corporate bond**. When a government body does it, like your Corporation just did, it's a **government bond**. Same structure, different borrower." Raj paused. "But he wouldn't have got 7%."

"Why not? It's the same ₹10,000."

"Because it isn't the same promise. Your Corporation is backed by the property tax of an entire city. It would take something close to catastrophe for it not to pay you. Aman is one man with three ovens and a good year behind him. He might be excellent. He might also not exist in ten years. If he wants your money for a decade, he has to make it worth the worry."

The chance that a borrower cannot repay is called **credit risk**, or default risk — and it is the single biggest reason two bonds pay different rates. A riskier borrower must offer a higher coupon, not out of generosity, but because nobody would otherwise choose them over a safer option paying the same. **The extra interest is the price of the extra worry.** Whenever you see an unusually high rate on offer, that is the first question to ask: what is this rate compensating me for?

3.5 — Riya tries to get out early, and learns the rest of it

About a year in, Riya needed a chunk of that ₹10,000 sooner than ten years. She assumed she was stuck. "Can I get out at all?"

"You can sell it to someone else. Bonds trade." Raj half-smiled. "Go and find out what you'd get for it."

She had expected roughly ₹10,000 back — it said ₹10,000 on the certificate. What she was quoted was less. Meaningfully less. She came back genuinely annoyed, because the Corporation hadn't missed a single payment and nothing had gone wrong.

"Nothing did go wrong," Raj said. "Rates went up. New government bonds are being issued at 10% now. So put yourself on the other side of your own sale — why would anybody pay you full price for a certificate paying 7%, when they can buy a fresh one paying 10%?"

Riya worked it through and didn't much like where it landed. "They wouldn't. They'd only take mine if it were cheap enough to make up the difference."

"That's it. That's the whole mechanism."

This is the relationship that surprises almost everyone the first time: **when interest rates rise, the market price of existing bonds falls** — because older, lower-paying bonds must be discounted to compete with newly issued ones. And it runs both ways. Had new bonds dropped to 4%, Riya's 7% certificate would have looked excellent, and she could have sold it for *more* than she paid.

She kept the bond. But she had noticed something she couldn't put down: the same force that had just cost her on a sale she didn't make was being set by someone, somewhere, for reasons she knew nothing about. She filed that away. It would be a while — and several chapters — before she learned whose decision it actually was.

3.6 — Two ways to put money to work. Then a third.

Riya now had both. A piece of a business, which could do anything. A loan to a city, which would do exactly one thing. Own, or lend. As far as she could tell, that was the entire menu, and between them they covered every way money could be put to work.

It was Raj who mentioned, on the walk to the station and mostly in passing, that there was a third thing. Not owning a business, and not lending to anyone.

She asked what he meant. He nodded at the shopping mall across the road — the one she walked past four times a week and had never once thought about as anything other than where she bought groceries. "That," he said. "Somebody owns that. And it isn't the shops inside it."

3.7 — The real world translation