IS108

Bonds

Understanding How Lending Money Can Produce Income, Reduce Certain Risks, and Add Stability to a Portfolio

What You'll Learn

By the end of this lesson, you’ll understand:

  • What a bond is
  • How bonds differ from stocks
  • Why governments and companies issue bonds
  • What face value, coupon rate, maturity, price, and yield mean
  • Why bond prices usually fall when interest rates rise
  • The differences among government, municipal, and corporate bonds
  • The major risks of bond investing
  • How individual bonds differ from bond funds
  • What to review before purchasing a bond investment

Why This Matters

Stocks allow you to become an owner.

Bonds allow you to become a lender.

When you purchase a bond, you are generally lending money to a government, company, municipality, or other organization.

In exchange, the issuer promises to:

  • Pay interest according to the bond’s terms
  • Return the bond’s principal at maturity
  • Follow the conditions established when the bond was issued

Bonds are often described as more conservative than stocks.

That can be true in certain situations, but bonds are not risk-free.

A bond can:

  • Decline in market value
  • Lose purchasing power to inflation
  • Stop paying interest
  • Be repaid earlier than expected
  • Become difficult to sell
  • Default entirely

Understanding bonds can help you build a portfolio that does not depend entirely on stock-market growth.

What Is a Bond?

A bond is a debt security.

When an organization issues a bond, it is borrowing money from investors.

The issuer might use that money to:

  • Build roads or schools
  • Finance government operations
  • Purchase equipment
  • Expand a business
  • Acquire another company
  • Refinance existing debt
  • Fund infrastructure
  • Support other long-term projects

The investor provides capital.

The issuer promises repayment according to the bond’s terms.

This relationship makes bondholders creditors rather than owners.

Bonds vs. Stocks

Stocks and bonds represent different relationships with an organization.

Stockholder

A stockholder:

  • Owns an interest in the company
  • May receive voting rights
  • May receive dividends
  • Can benefit significantly from business growth
  • Usually has a lower claim on assets if the business fails

Bondholder

A bondholder:

  • Lends money to the issuer
  • Generally does not receive ownership rights
  • Receives interest according to the bond’s terms
  • Is promised repayment of principal
  • Usually has a higher claim than common shareholders if the company is liquidated

Bondholders generally have more predictable contractual payments.

Stockholders generally have greater potential to participate in business growth.

Both can lose money.

The Essential Parts of a Bond

Face Value

Face value, also called par value or principal, is the amount the issuer promises to repay at maturity.

Many bonds use a face value of $1,000, although denominations vary.

The bond’s current market price may be higher or lower than its face value.

Coupon Rate

The coupon rate is the annual interest rate established by the bond’s terms.

Suppose a bond has:

  • Face value: $1,000
  • Coupon rate: 5%

The annual coupon interest is:

$1,000 × 5% = $50

If the bond pays interest twice per year, the investor may receive two payments of $25.

Payment schedules and terms vary.

Maturity Date

The maturity date is when the issuer is scheduled to repay the bond’s face value.

A bond may mature in:

  • A few months
  • Several years
  • Several decades

Maturity affects:

  • How long your money may be committed
  • How long you may receive interest
  • The bond’s sensitivity to changing interest rates
  • The amount of uncertainty surrounding repayment

Longer-term bonds generally experience greater price changes when interest rates move, all else being equal.

Market Price

A bond’s market price is what investors are currently willing to pay for it.

A bond may trade:

  • At par: Market price equals face value
  • At a premium: Market price exceeds face value
  • At a discount: Market price is below face value

A $1,000 bond might trade for $980, $1,000, or $1,040 depending on interest rates, credit quality, remaining maturity, and market demand.

Yield

Yield measures the income or return associated with a bond relative to its price.

Different yield calculations answer different questions.

Coupon Rate, Current Yield, and Yield to Maturity

Coupon Rate

The coupon rate is based on face value.

A $1,000 bond with a 5% coupon pays $50 annually according to its terms, regardless of whether you purchased the bond for $950 or $1,050.

Current Yield

Current yield compares the annual coupon payment with the bond’s current market price.

The formula is:

Annual coupon payment ÷ current market price = current yield

Suppose:

  • Annual coupon: $50
  • Market price: $950

Current yield:

$50 ÷ $950 = approximately 5.26%

If the market price rises to $1,050:

$50 ÷ $1,050 = approximately 4.76%

FINRA explains that current yield changes when the bond’s market price changes, even though a fixed coupon rate generally does not. FINRA provides additional guidance on bond yields and returns.

Yield to Maturity

Yield to maturity estimates the bond’s annualized return if:

  • You purchase it at the current price
  • You hold it until maturity
  • The issuer makes the promised payments
  • Certain assumptions about reinvestment are met

Yield to maturity considers:

  • Purchase price
  • Coupon payments
  • Time remaining
  • Face value repaid at maturity
  • Whether the bond trades at a premium or discount

Yield to maturity is often more informative than coupon rate alone.

It is still an estimate based on assumptions, not a guaranteed return.

Why Bond Prices Change

A bond’s contractual payments may remain fixed, but its market value can change every day.

Prices may respond to:

  • Market interest rates
  • Inflation expectations
  • Changes in the issuer’s credit quality
  • Economic conditions
  • Supply and demand
  • Time remaining until maturity
  • Whether the bond is callable
  • Market liquidity

One of the most important relationships in bond investing is the connection between interest rates and prices.

Why Bond Prices Fall When Interest Rates Rise

Bond prices and market interest rates generally move in opposite directions.

Suppose you own a $1,000 bond paying 4% interest.

It provides $40 of annual coupon income.

Later, newly issued bonds of similar quality and maturity begin paying 6%.

A new investor can receive $60 annually from a new $1,000 bond.

Your older bond paying $40 is now less attractive.

To persuade someone to purchase it, its market price may need to fall.

The reverse can also happen.

If new bonds pay only 3%, your existing 4% bond may become more attractive and rise in market value.

The SEC emphasizes that fixed-rate bond prices generally fall when market rates rise, with longer maturities and lower coupons often experiencing greater sensitivity. Investor.gov explains interest-rate risk in bonds.

What If You Hold the Bond Until Maturity?

If you hold an individual bond until maturity and the issuer fulfills its obligations, you generally receive:

  • The scheduled interest payments
  • The face value at maturity

Short-term market price changes may not affect the amount paid at maturity.

However, several risks remain:

  • The issuer could default.
  • Inflation could reduce your purchasing power.
  • You may need to sell early.
  • The bond may be called before maturity.
  • Your money may remain locked into a below-market interest rate.
  • Reinvested interest may earn less than expected.

Holding to maturity can reduce the importance of temporary price movement.

It does not eliminate bond risk.

Duration and Interest-Rate Sensitivity

Duration is a measure used to estimate how sensitive a bond or bond fund may be to changes in interest rates.

In general:

  • Higher duration means greater interest-rate sensitivity.
  • Lower duration means less interest-rate sensitivity.
  • Longer maturities often produce higher duration.
  • Lower coupon rates often produce higher duration.

A fund with a duration of approximately seven years may experience a price decline of roughly 7% if market interest rates rise by one percentage point, all else being equal.

This is an estimate, not a guarantee.

Duration does not measure every type of risk.

A low-duration bond can still experience:

  • Default risk
  • Inflation risk
  • Liquidity risk
  • Currency risk
  • Call risk

Duration helps explain interest-rate exposure, not total safety.

Major Types of Bonds

U.S. Treasury Securities

Treasury securities are issued by the U.S. Department of the Treasury.

They include:

  • Treasury bills
  • Treasury notes
  • Treasury bonds
  • Treasury Inflation-Protected Securities
  • Floating-rate notes

Treasury securities are backed by the U.S. government and are generally considered to have very low default risk.

However, they still face:

  • Interest-rate risk
  • Inflation risk
  • Reinvestment risk
  • Market-price risk if sold before maturity

Treasury interest is subject to federal income tax but exempt from state and local income taxes under current federal rules. The IRS explains the taxation of Treasury interest.

Treasury Inflation-Protected Securities

Treasury Inflation-Protected Securities, commonly called TIPS, are designed to provide protection against inflation.

Their principal value adjusts based on an inflation measure.

Interest payments are calculated using the adjusted principal.

TIPS can help address inflation risk, but they can still:

  • Decline in market value
  • React to changes in real interest rates
  • Create taxable adjustments in certain accounts
  • Produce disappointing returns if inflation is lower than expected

Inflation protection does not mean price stability.

U.S. Savings Bonds

Savings bonds are nonmarketable Treasury securities designed for individual savers.

Unlike marketable Treasury securities, savings bonds generally cannot be traded in the secondary market.

Their redemption rules, holding periods, interest calculations, and tax treatment differ from ordinary marketable bonds.

Investors should review current TreasuryDirect rules before purchasing or redeeming them.

Municipal Bonds

Municipal bonds are issued by:

  • States
  • Cities
  • Counties
  • School districts
  • Public authorities
  • Other governmental entities

Municipalities may use bond proceeds to finance:

  • Roads
  • Schools
  • Hospitals
  • Water systems
  • Public transportation
  • Other community projects

Interest from certain municipal bonds may be exempt from federal income tax.

It may also receive favorable state or local tax treatment, depending on the bond and the investor’s residence.

Not every municipal bond receives the same tax treatment. Some municipal-bond interest may also affect alternative minimum tax calculations or other tax matters.

Tax benefits do not eliminate credit risk.

A financially troubled municipality can still default.

Corporate Bonds

Corporate bonds are issued by businesses.

Companies may borrow to:

  • Expand operations
  • Purchase equipment
  • Acquire another business
  • Refinance debt
  • Repurchase shares
  • Fund general business activity

Corporate bonds usually offer higher yields than similar-maturity Treasury securities because investors accept additional credit risk.

The company could:

  • Miss an interest payment
  • Restructure its debt
  • Have its credit rating reduced
  • Enter bankruptcy
  • Fail to repay the full principal

Corporate bonds range from relatively high-quality securities to highly speculative debt.

Agency Bonds

Agency bonds are issued or supported by certain government-related organizations.

Their risks and government backing vary.

Some may have an explicit federal guarantee.

Others do not.

Investors should not assume every security associated with a government-sponsored organization carries the same protection as a Treasury security.

International Bonds

International bonds may be issued by:

  • Foreign governments
  • Foreign companies
  • International organizations

They may introduce additional risks, including:

  • Currency fluctuations
  • Political instability
  • Regulatory differences
  • Sovereign default
  • Limited disclosure
  • Different trading practices

A high yield may be compensation for substantial risk.

Investment-Grade and High-Yield Bonds

Credit-rating agencies evaluate the ability of issuers to meet their debt obligations.

Bonds are often grouped into:

Investment-Grade Bonds

These bonds receive ratings indicating relatively lower credit risk.

Lower credit risk does not mean no credit risk.

Ratings can change, and an issuer can still default.

High-Yield Bonds

High-yield bonds receive lower credit ratings and involve greater perceived default risk.

They are sometimes called junk bonds.

Issuers generally must offer higher yields to attract investors.

That higher yield is not free additional return.

It is compensation for accepting greater risk.

Investor.gov notes that high-yield bonds typically offer more income because investors perceive a greater possibility of default. Review Investor.gov’s description of high-yield bonds.

Understanding Credit Ratings

Credit ratings may help investors evaluate an issuer’s ability to make payments.

However, ratings:

  • Are opinions, not guarantees
  • Can be wrong
  • Can change after you purchase the bond
  • May not update immediately
  • Do not measure every type of risk
  • Do not determine whether the price is attractive

A bond can decline if its rating is downgraded.

A downgrade suggests that the issuer’s ability to repay may have weakened.

Investors should consider:

  • The rating
  • The issuer’s finances
  • Debt levels
  • Cash flow
  • Industry conditions
  • Bond protections
  • Maturity
  • Yield relative to risk

The Major Risks of Bond Investing

Credit Risk

Credit risk is the possibility that the issuer will fail to make interest or principal payments.

FINRA identifies credit or default risk as one of the central risks facing bond investors. FINRA’s bond guide explains credit, call, reinvestment, and other bond risks.

Interest-Rate Risk

Interest-rate risk is the possibility that a bond’s market price will decline when market rates rise.

Longer-term and lower-coupon bonds are generally more sensitive.

Inflation Risk

Inflation can reduce the purchasing power of fixed payments.

If a bond pays 3% while inflation averages 4%, the investor’s purchasing power may decline even while receiving every promised payment.

Reinvestment Risk

Reinvestment risk is the possibility that interest payments or returned principal will need to be reinvested at a lower rate.

This often becomes more noticeable when interest rates are falling.

Call Risk

A callable bond allows the issuer to repay the bond before its scheduled maturity under stated conditions.

An issuer may call a bond when interest rates fall, much like a homeowner refinancing a mortgage.

The investor receives the call price but loses future interest payments and may have to reinvest at a lower yield.

FINRA advises investors to review callable-bond terms carefully because many bonds can be redeemed before their original maturity. FINRA explains callable bonds and their risks.

Liquidity Risk

Liquidity risk is the possibility that you cannot sell a bond quickly at a fair price.

Some bonds trade infrequently.

A bond’s displayed value may differ from the price a buyer is actually willing to pay.

Downgrade Risk

A bond’s price may fall if a rating agency lowers the issuer’s credit rating.

The downgrade may also make the bond harder to sell.

Currency Risk

A bond denominated in another currency can gain or lose value as exchange rates change.

You can receive every promised payment in the foreign currency and still lose money after converting it into U.S. dollars.

Event Risk

An issuer’s ability to repay may be affected by:

  • Bankruptcy
  • A major acquisition
  • Natural disaster
  • Fraud
  • Litigation
  • Political change
  • Regulatory action
  • Industry disruption

Zero-Coupon Bonds

A zero-coupon bond does not make regular coupon payments.

Instead, the investor typically purchases it for less than face value and receives the face value at maturity if the issuer pays as promised.

For example:

  • Purchase price: $800
  • Face value: $1,000
  • Payment at maturity: $1,000

The $200 difference represents part of the investor’s return.

Zero-coupon bonds can be especially sensitive to interest-rate changes.

They may also create taxable income before the investor receives cash, depending on the bond and account.

Investor.gov explains that zero-coupon bonds make a larger payment at maturity rather than periodic coupon payments. Investor.gov provides an introduction to zero-coupon corporate bonds.

Individual Bonds vs. Bond Funds

Investors can obtain bond exposure through individual securities or pooled funds.

Individual Bonds

An individual bond has:

  • A specific issuer
  • A stated maturity
  • A face value
  • Defined payment terms
  • A specific credit risk

If held to maturity and paid as promised, the investor generally receives the face value.

Building a diversified portfolio of individual bonds may require more money, research, and monitoring.

Bond Mutual Funds and ETFs

A bond fund may hold dozens, hundreds, or thousands of bonds.

Potential benefits include:

  • Diversification
  • Professional management
  • Easier reinvestment
  • Lower minimum investment
  • Access to many bond categories

However, most bond funds do not have one maturity date at which the investor’s original principal is automatically returned.

The fund continually buys, sells, and replaces bonds.

Its share price can rise or fall.

Selling a bond fund after a market decline can produce a loss.

Bond Ladders

A bond ladder is a collection of bonds with different maturity dates.

For example, an investor might own bonds maturing in:

  • One year
  • Two years
  • Three years
  • Four years
  • Five years

As each bond matures, the investor may:

  • Spend the money
  • Reinvest it in a new longer-term bond
  • Use it for another goal

A ladder may help manage:

  • Reinvestment timing
  • Cash-flow needs
  • Interest-rate uncertainty

It does not eliminate default, inflation, call, or market risk.

Each bond must still be evaluated.

How to Evaluate a Bond

Before purchasing an individual bond, review:

1. Issuer

Who owes you the money?

2. Credit Quality

How likely is the issuer to make the promised payments?

3. Maturity

When is the principal scheduled to be returned?

4. Coupon Rate

How much interest does the bond promise?

5. Purchase Price

Are you buying at a premium, discount, or par?

6. Yield to Maturity

What is the estimated annualized return if the bond is held to maturity and payments occur as expected?

7. Call Provisions

Can the issuer repay the bond early?

When and at what price?

8. Liquidity

How easily can the bond be sold?

What spread or markup might apply?

9. Tax Treatment

Is the interest federally taxable, tax-exempt, or subject to special rules?

10. Role in the Portfolio

Is the bond intended to provide:

  • Income
  • Stability
  • Capital preservation
  • Diversification
  • Future cash flow
  • Inflation protection

A higher yield should always lead to another question:

What additional risk am I being paid to accept?

Bonds can support stability and income.

They work best when selected as part of a complete investment plan rather than as a response to fear or a tempting yield.

A Realistic Example

Meet Priya.

Priya has a long-term investment portfolio made mostly of stock funds.

She wants to reduce some of the portfolio’s dependence on stock-market performance.

She considers a diversified bond fund that holds:

  • U.S. Treasury securities
  • Investment-grade corporate bonds
  • Bonds with different maturity dates
  • Hundreds of individual securities

The fund has:

  • An expense ratio of 0.10%
  • An average duration of six years
  • No guarantee against loss

Priya invests $20,000.

The approximate annual expense represented by the expense ratio is:

$20,000 × 0.10% = $20

Later, market interest rates rise.

The fund’s share price declines because its older bonds are less attractive than newly issued bonds paying higher rates.

Priya is disappointed, but she understands:

  • The fund was never a savings account.
  • Rising rates can lower bond prices.
  • The fund will gradually purchase newer bonds offering higher yields.
  • Her long-term reason for owning bonds has not changed.

She reviews the investment as part of her total asset allocation instead of judging it by one year’s price movement.

Common Mistakes Bond Investors Make

Assuming Fixed Income Means Fixed Value

The payment terms may be fixed, but the bond’s market price can change.

Looking Only at the Coupon Rate

A high coupon does not automatically mean a high return.

Purchase price, maturity, call features, credit quality, and yield all matter.

Ignoring Interest-Rate Risk

Even a high-quality bond can decline when interest rates rise.

Chasing High Yield

An unusually high yield may indicate unusually high default, liquidity, call, or market risk.

Believing a Bond Fund Will Return a Set Principal at Maturity

Most bond funds do not have one maturity date.

Their share prices continually change.

Ignoring Call Provisions

A high-coupon bond may be repaid early, forcing the investor to reinvest at lower rates.

Seven Habits of Confident Bond Investors

  • Understand who owes you the money.
  • Compare yield with credit and interest-rate risk.
  • Review maturity and duration.
  • Check whether the bond is callable.
  • Understand the difference between an individual bond and a bond fund.
  • Evaluate taxes after considering the full return.
  • Use bonds for a clear purpose within the portfolio.

Common Myths About Bonds

Myth

Bonds cannot lose money.

Fact

Bond prices can decline, and issuers can default.

Myth

The highest-yielding bond is the best bond.

Fact

Higher yield often reflects higher risk.

Myth

A bond paying 5% will always earn exactly 5%.

Fact

Your return depends on purchase price, reinvestment, holding period, issuer payments, taxes, and whether the bond is called or sold early.

Myth

Treasury securities have no risk.

Fact

They have very low default risk but still face interest-rate, inflation, reinvestment, and market-price risk.

Myth

Bond funds work exactly like individual bonds.

Fact

An individual bond has a stated maturity. Most bond funds continually replace bonds and do not promise to return your original investment on a specific date.

Myth

Municipal bonds are always tax-free.

Fact

Tax treatment depends on the bond and the investor’s circumstances.

Frequently Asked Questions

High-quality bonds are generally less volatile than stocks, but risk varies widely.

A speculative corporate bond can be riskier than a short-term Treasury security.

“Bond” is a broad category, not a safety rating.

Many marketable bonds can be sold in the secondary market.

The sale price may be above or below what you paid, and liquidity may be limited.

Savings bonds and certain other securities have different redemption rules.

The fund’s holdings may have fallen in market value because interest rates increased, credit conditions weakened, or investors demanded higher yields.

Income does not prevent price declines.

Individual bonds can provide specific maturities and cash flows.

Bond funds can provide easier diversification and professional management.

The better choice depends on your goals, resources, time horizon, tax situation, and ability to evaluate bonds.

The issuer may miss interest or principal payments.

Bondholders may recover some money through restructuring, bankruptcy, collateral, or other legal processes, but full recovery is not guaranteed.

Only if the issuer makes them as promised.

The strength of that promise depends on the issuer, bond terms, and any applicable backing or insurance.

No.

Ratings can be raised or lowered as the issuer’s financial condition changes.

Traditional fixed-rate bonds may lose purchasing power during high inflation.

TIPS and certain other investments are designed to provide some inflation protection, but they carry their own risks.

Your One Actionable Takeaway

Choose one bond or bond fund and complete a risk review without purchasing it.

Identify:

The issuer or types of issuers

The maturity or average maturity

The coupon or yield

The credit quality

The duration, if it is a fund

Whether the bonds are callable

The tax treatment

The main reason the investment belongs in a portfolio

Then answer:

What risk explains the yield this investment is offering?

Yield is never meaningful without understanding the risk required to earn it.

Your Next Best Step

Bonds may pay interest.

Stocks and stock funds may pay dividends.

In the next lesson, you will learn:

Understanding dividends will help you evaluate investment income without confusing a cash payment with a guaranteed profit.

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