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Bonds 101: The Basics of Fixed Income Explained 

Bonds 101: The Basics of Fixed Income Explained 

Bond Insights

23 Apr 2026

4 min read

Bonds 101

Nancy Desai

Bonds are fixed income instruments where you lend money to issuers in exchange for regular interest and principal repayment. This guide explains what bonds are, how they work, and why they play a key role in investing. 

Investing has become the new cool in India with demat accounts and SIPs at all-time highs. More individuals are actively exploring different ways to grow their money. Still, if you ask what most people invest in, the answer will usually hover around stocks for long-term growth and fixed deposits for stability.  

However, there’s a third segment in the investment ecosystem that rarely makes it into these conversations: Bonds.  

To make bonds easier to understand (and a lot less mysterious), we’ve put together this Bonds 101 series for anyone exploring this space for the first time and looking for a clear, structured way to get started. 

Because anything that doesn’t get talked about enough eventually starts sounding more complicated than it really is. 

Join us for this 9-part walkthrough of the world of bonds, where we uncover one concept at a time. Let us begin with the basics. 

In the first chapter, we will break down what bonds actually are, how they work, and why they exist in the first place. Let’s get started.  

A New Bond Begins 

One sound morning, Mr. Financewala is sitting at the dining table, waiting for breakfast with a newspaper in his hands. His eyes pause at an article, “Why bonds belong to every Indian investor’s portfolio—and why now is the ideal time to invest”, and his mind begins to wander.  

Mr. Financewala has always been someone who carefully plans his finances in a measured, disciplined, and proactive way. But lately, markets have become volatile, and traditional fixed deposits haven’t kept pace with inflation.  

He finds himself wondering, could bonds provide more stable returns compared to the volatility he is seeing in equities? 

Then again, before deciding if something fits, you first need to understand what it is. 

So, what are bonds? 

What Are Bonds? 

At their core, bonds are simply a way of lending money. When you invest in a bond, you are lending your money to an entity, typically a government, company, or an institution. In return, the bond issuer commits to two things: 

  • Paying you regular interest (called a coupon
  • Returning your original investment (principal) either periodically or on a fixed date, as defined by the predetermined maturity schedule 

Mr. Financewala leans a little closer, thinking, “The idea seems simple enough, but how do these bonds work out in real life?” 

How Bonds Work 

Let’s break it down with a simple example. 

Suppose Mr. Financewala invests ₹1,00,000 in a corporate bond offering a 12% annual coupon, paid quarterly, with a maturity of 1 year. 

Here’s what happens: 

  • The bond pays 12% annually, equaling ₹12,000 in total interest 
  • Since payouts are quarterly, he receives ₹3,000 every 3 months 
  • At the end of 1 year, he gets back his ₹1,00,000 principal 

This is why bonds are called fixed-income securities, as the payout structure is defined up front. This does sound like a good deal for the investor (you), but what’s in it for the issuer? 

Purpose of Bonds and Why They Are Issued 

The answer is simple: funding. 

Large entities need capital to operate, expand, and manage expenses. Instead of relying only on banks for loans, they raise money directly from investors through bonds. 

Here’s how it works from both sides: 

For Issuers (Governments/Companies) For Investors (You) 
Raise funds for projects, expansion, or operations Earn regular interest income 
Access capital without giving up ownership Get a defined payout structure 
Manage financing needs Know when and how much you’ll receive 
Diversify funding sources beyond banks Participate in structured lending 

While the overall math checks out for Mr. Financewala, something still feels incomplete. He begins to wonder which companies or organizations issue these bonds and for what purpose? 

Who Issues Bonds? 

There is no single type of entity that issues bonds. In fact, a wide range of institutions use bonds as a way to raise capital, depending on their needs and scale. 

Here are the key issuers in the bond market: 

  1. Governments 
    Governments issue securities to fund infrastructure projects, support public services, and manage fiscal deficits. These are considered the most stable or safe form of investments for investors. Most common types of government bonds include: 
  • Government bonds: Long-term bonds issued by the central government, typically with maturities ranging from 5 to 40 years.  
  • Treasury Bills (T-bills): Short-term instruments (91, 182, and 364 days) issued at a discount and redeemed at face value.  
  • State Development Loans (SDLs): Bonds issued by state governments to meet their funding requirements. 
  1. Municipalities 
    Local governing bodies issue bonds to develop urban infrastructure such as roads, water systems, and public utilities. 
  1. Public Sector Undertakings (PSUs) 
    PSUs raise funds through bonds to finance large-scale development projects, expand operations, or meet ongoing capital requirements.  
  1. Corporations 

Private companies issue bonds to raise capital, commonly in the form of Non-Convertible Debentures (NCDs) to fund new projects or managing working capital requirements. 

As we’ll explore in the chapters ahead, each of these issuers brings a different balance of risk, return, and purpose. 

Conclusion 

By now, Mr. Financewala has a solid understanding of the basics: what bonds are, how they work, and why they exist. The structure makes sense, and for the first time, bonds don’t feel like an abstract concept anymore. 

But just as he leans into that idea of investing in bonds, he realizes there’s more to uncover. He soon discovers that there are different types of bonds, each designed for different needs, with their own features and risk levels. 

And that’s where things start to get interesting. 

In the next chapter, we’ll explore the different types of bonds available in the Indian market and help you understand what sets each of them apart. 

FAQs About Basics of Bonds

What are bonds in simple terms?

How do bonds work?

Why are bonds issued?

What are the different types of bonds?

author

AUTHOR

Nancy

Desai

An MBA in Finance and Marketing and former Teaching Associate at IIM Ahmedabad, Nancy blends academic expertise with a deep interest in personal and behavioural finance. With experience across content strategy, corporate communications, and PR, she focuses on demystifying complex financial concepts. Nancy brings clarity and insight to topics like everyday investing and wealth creation—making finance more accessible, relatable, and actionable for a wide range of readers.


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