What Are Bonds? Definition and How to Invest

Bonds are loans that pay investors fixed or variable rates of returns. Bonds can be a cornerstone of your investment portfolio. See how they might work for you.

What Are Bonds?
Updated Jan 22, 2025 Fact Checked

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Written by Conor Richardson

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Takeaways

  • Bonds are debt instruments that can provide investors with fixed-income.
  • Bonds can have fixed or variable interest rates, which can change their risk profile.
  • Bonds have a maturity date, where the principal must be paid in full.
  • Corporations and governments issue bonds to finance projects with debt.
  • Bond prices are inversely correlated with interest rates: as interest rates rise, prices fall.

What Is a Bond?

A bond represents a loan made by an investor to a borrower, typically a corporation or a governmental entity. The borrower issues bonds to raise funds for various purposes, such as financing a new project, expanding operations, or refinancing existing debts.

When you purchase a bond, you become the lender. The issuer promises to pay back the bond's face value at a specified future date, known as the maturity date.

During the life of the bond, the issuer typically pays you periodic interest payments, known as coupon payments. Bonds are a popular instrument in the world of personal and corporate finance, offering a way to secure a fixed return while lending capital to the issuer.[1]

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Key Elements of a Bond

Bonds have many distinct features from investments like stocks or real estate. Here are several vital elements of a bond:

Interest Rate

The interest rate, referred to as the coupon rate, is the percentage of the bond's face value that the issuer agrees to pay the bondholder annually. This rate determines the regular interest income you receive from holding the bond. It reflects the compensation you get for lending your money and taking on the associated credit risk.

Term

The term, or maturity, is the period at the end of which the bond will mature and the principal is paid. Bond terms vary greatly, from short-term bonds maturing in a year or less to long-term bonds lasting for several decades. The bond's term influences its risk profile and yield.

Markets for Bonds

Bonds are traded in various markets, providing investors with the opportunity to buy and sell them regularly. Primary markets are where bonds are first issued, while secondary markets allow investors to buy and sell existing bonds. The liquidity and size of these markets can impact price and availability.

You can invest in bonds in your online brokerage account.

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Relationship Market Value & Interest Rates

The market value of a bond is intricately linked to prevailing interest rates in the economy. When there is a rise in interest rates, the market value of existing bonds typically falls. This inverse relationship occurs because new bonds will likely be issued at higher rates, which reduces the attractiveness of existing bonds issued with lower rates. Conversely, when interest rates fall, the market value of existing bonds generally increases.

This is because older bonds with higher interest rates become more desirable compared to newly issued bonds at lower rates. Understanding this relationship is crucial for investors, as it affects potential gains or losses from bond investments.

Types of Bonds

There are many types of bonds to consider investing in with your hard-earned money. Here are several to investigate:

U.S. Treasury Bonds

U.S. Treasury bonds are government debt securities issued by the Department of the Treasury. They are one of the safest investments, backed by the full faith and credit of the U.S. government.

Treasury bonds have long maturities, ranging from 20 to 30 years, and offer semi-annual interest payments.[2] Their safety and reliability make them a cornerstone in many investment portfolios, particularly if you want a secure and steady return.

Corporate Bonds

C Corporations issue corporate bonds to finance operations, expansions, or other business activities.[3] These bonds typically offer higher interest rates than government bonds, reflecting the increased risk of lending to a corporate entity.

Smart Tip:

The three main credit rating agencies for bonds are Moody’s, Standard & Poor’s, and Fitch.

The creditworthiness of the issuing company heavily influences the risk and return profile. Rating agencies assess the credit risk of corporate bonds, with ratings ranging from high-grade (low risk) to high-yield or junk bonds (high risk).

Municipal Bonds

State and local governments or their agencies issue municipal bonds to fund public projects like roads, schools, and infrastructure. The interest income from municipal bonds can be exempt from local and state taxes and federal taxes, making municipal bonds attractive investments. While generally considered less risky than corporate bonds, the safety of municipal bonds can vary significantly depending on the financial health of the issuing municipality.

How Bonds Work

Bonds function as a form of debt investment. When you buy a bond, you are effectively lending money to the issuer in exchange for periodic interest payments and the return of the face value of the bond upon maturity.

The process begins with the bond issuer determining the critical elements of the bond, like term, interest rate, and the total amount of capital to raise. Investors then purchase these bonds, providing capital to the issuer.

As a bondholder, you receive interest payments at set intervals, typically semi-annually. Upon maturity, the bond issuer repays the principal amount, concluding the investment.

High-yielding certificates of deposit also offer internet payments as a reward to investors.

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Pros and Cons of Bonds

All investments have their pros and cons, and bonds are no exception. Bonds can be a perfect addition to your portfolio, depending on where you are on your investment journey and what you are trying to optimize. Before you buy a bond, here are some advantages and disadvantages to consider:

Pros of Bonds
  • Regular Income: Bonds offer several benefits, including income generation through regular interest payments, which can attract investors looking for a steady income stream. (Read about how fixed-income investing works).
  • Limited Risk: They are generally considered less risky than stocks, making them a vital component for diversifying an investment portfolio.
  • Capital Preservation: Bonds can also provide a measure of capital preservation, especially in the case of high-grade bonds such as U.S. Treasuries. (Read more about how U.S. Treasury Bonds work).
Cons of Bonds
  • Lower Returns: Bonds typically offer lower returns compared to stocks, which means they may not always keep pace with inflation, potentially reducing purchasing power over time. (Read more about high-returning assets like Bitcoin and Cryptocurrency).
  • Interest Rate Risk: The interest rate risk is another concern, as rising rates can decrease a bond's market value. (Read about how to invest in CDs).
  • Credit Risk: There is credit risk, particularly with corporate bonds, as the issuing company might default on its obligations. (Read more about the Best 9 Low-Risk Investments).
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When Are Bonds a Good Investment?

Bonds can be a great investment choice under several circumstances. They are ideal for investors seeking a stable income stream, particularly those nearing retirement who might not have the risk tolerance for volatile stock markets. Bonds are also suitable during periods of market uncertainty or when interest rates are expected to decline because they offer investors a haven (compared to equities).

If you are trying to balance or diversify your investment portfolio incorporating a bond investing strategy can reduce overall risk while providing consistent returns. Bonds also cater to specific financial goals with a known time horizon, like funding your child's education or a major purchase.

Portfolio Allocation

In portfolio allocation, bonds are crucial for diversification and risk management. The proportion of bonds in your portfolio typically depends on your risk tolerance, investment horizon, and financial goals. Generally, a more conservative investor or one with a shorter time horizon may allocate a higher percentage to bonds, effectively balancing risk and return.

Smart Summary

Bonds are a critical part of any well-balanced investment portfolio. Depending on your risk appetite and investment time horizon, bonds can be part of a fixed-income investment strategy or provide a vital slice of diversification to your retirement portfolio. With rising interest rates, bonds, and interest-income-generating investments have become very popular. Talk to a financial advisor or use a robo advisor to see how bonds can supplement your investment portfolio today.

Sources

(1) Investor.gov. What are Bonds? Last Accessed January 22, 2025.

(2) Securities and Exchange Commission. What are Corporate Bonds? Last Accessed January 22, 2025.

(3) Treasury Direct. Treasury Bonds. Last Accessed January 22, 2025

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