How Bonds Work
 
A bond is essentially a loan an investor makes to the bonds' issuer. The investor generally receives regular interest payments on the loan until the bond matures or is called, at which point the issuer repays you the principal. Certain bonds have special provisions. Bond funds pool money from many investors to buy individual bonds that meet the fund's investment objective.
 
 
Most bonds pay regular interest until the bond matures.
Callable bonds allow the issuer to repay the bond before maturity.
Zero-coupon bonds offer a deep discount and pay accumulated interest at maturity.
 
See below for more information on callable bonds.
Who Issues Bonds?
Government entities and corporations issue bonds to raise money for their endeavors.
There are five major types of bonds in the U.S. market, representing the five major issuers:
Bond Type Description
Government (Treasury) The U.S. Treasury issues bonds to pay for government activities and pay off the national debt.

Yield is lowest among bonds, but considered low in risk if held until maturity. Bonds are exempt from state and local taxes.
Agency(GSE) U.S. Government agencies (also called Government Sponsored Enterprises) issue bonds to support their mandates, typically to ensure that various constituencies, like farmers, students, and homeowners, have access to sufficient credit at affordable rates. Examples include Fannie Mae, Freddie Mac, and TVA.

The yield is slightly higher than government bonds and still very low risk. Some agency bonds like Fannie Mae and Freddie Mac are taxable. Others are exempt from state and local taxes.
Municipal ("munis") States, cities, counties, and towns issue bonds to pay for public projects (roads, etc.) and finance other activities.

The majority of munis are exempt from federal, state, and local taxes. This can raise the effective yield of munis above other types of bonds, depending on your tax bracket.*
Corporate Corporations issue bonds to expand, modernize, cover expenses, and finance other activities.

The yield and risk are generally higher than government and municipals. Rating agencies help you assess the credit risk. Corporate bonds are fully taxable. Rating agencies help investors assess the credit risk.
Mortgage-backed Banks and other lending institutions pool mortgages and offer them as a security to investors. This raises money so the institutions can offer more mortgages. Examples include Ginnie Mae, Fannie Mae, and Freddie Mac.

Mortgage-backed bonds have a yield that typically exceeds high-grade corporate bonds with comparable maturity, and have a low credit risk. The major risk of these bonds is if lenders repay their mortgages early (for example, if interest rates drop), which can result in lower interest payments to the investor. Mortgage-backed bonds are fully taxable.
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How a Typical Bond Works
Bonds have three major components
The first is the face value (also called par value). This is the value of the bond as given on the certificate or instrument. This is the value the bond holder will receive at maturity unless the issuer defaults. If bonds are retired before maturity, bond holders may receive a slight premium over face value. Investors pay par when they buy the bond at its original face value. The price investors pay may be more or less than the face value. See Prices, Rates, and Yields.
Bonds also have a coupon rate. This is the annual rate of interest payable on the bond. For the owner of a bond, the higher the coupon rate, the higher the interest payments the owner receives. The rate is set at the time the bond is issued and generally does not change. Most bonds make interest payments semiannually, although some bonds are offered with monthly and quarterly payments.
Yields can differ from one bond to the next, due to several factors, such as:
Credit quality - Typically the higher credit quality, the lower the yield
Call provision - If a bond has a call provision, it usually has a higher yield
Maturity date - Typically the longer the maturity, the higher the yield
The third major component is the maturity. This is the date upon which the issuer pays back the face value of the bond. The bond terminates at maturity.
Example: A typical bond
A company issues a $30,000 10-year bond with a 6% coupon rate. Each year, the owner receives $1,800 (6% of $30,000), paid in two semiannual installments of $900.
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Callable Bonds
Callable bonds are bonds that the issuer can repay early, sometimes after a period of several years, at a predetermined price. The attraction of callable bonds is that they typically offer higher coupon rates than non-callable bonds.
However, you should understand the call risk. If interest rates drop low enough, the bond's issuer can save money by repaying its callable bonds and issuing new bonds at lower coupon rates. If this happens, the bond holder's interest payments cease and they receive their principal early. If the bond holder then reinvests the principal in bonds, he or she will likely have to accept a lower coupon rate, one that is more consistent with prevailing interest rates. This will lower monthly interest payments.
Example: A callable bond
An investor purchases a $30,000 10-year callable bond paying 6.5% interest, which is a higher interest rate than similar non-callable bonds. The bond is callable after five years at a price of 103 (that is, 103% of the face value, or $30,900). If interest rates drop enough, the investor may wind up with their principal returned and be faced with less attractive bond offerings.
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Zero-Coupon Bonds
Zero-coupon bonds, also known as "Strips", are bonds that do not make periodic interest payments. You buy the bond at a steeply discounted price and receive one payment at maturity. The payment is equal to the principal you invested plus the accumulated interest earned (compounded annually to maturity).
Zero-coupon bonds are attractive when you want to save for a defined objective and date, such as when a child starts college or you enter retirement. You receive your principal and interest in one lump sum, right when you need the money.
The drawback of most zero-coupon bonds is that you must pay taxes annually on the interest, even though you do not actually receive the interest until maturity. This can be offset if you buy the bonds in a tax-deferred retirement account, or in a custodial account for a child in situations where the child pays little or no tax.
Another drawback is that zero-coupon bonds can be particularly volatile in the open market. This doesn't matter if you keep the bond to maturity. But if you need to sell it early, you may incur a substantial loss.
Example: A zero-coupon bond
You are saving for your child's college education, which she will start in 10 years. You buy a 10-year zero-coupon bond. It costs you $12,000. In 10 years, you are paid the $12,000 plus the accumulated interest
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Test Yourself
1. You purchase a $20,000, 5-year bond with a coupon rate of 5%. How many interest payments will you receive and how large will each payment be?
See the answer.
2. You want to invest in a bond for your retirement account, and you won't need the interest payments until you begin retirement. What type of bond could be useful?
See the answer.
Want to learn more?
bullet Bond Ratings
Ready to start?
bullet Develop an investment plan online using the resources in the Retirement & Guidance Overview
bullet Find Bond Funds
bullet Find Individual Bonds
bullet Open a Fidelity AccountSM
Need further assistance?
 Call a Fidelity Fixed Income Specialist at 800-544-5372
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*Any fixed income security sold prior to maturity may be subject to substantial gain or loss. Income from municipal bonds is free from Federal, and in many cases, state and local taxes but may be subject to the Federal Alternative Minimum Tax.
 
 
 

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Learn About Fixed Income
Fixed Income
Fixed Income Funds
Individual Bonds
 Getting Started
 Diversify Your Portfolio
 Risks of Fixed Income
   Investing
 Tax Implications
 Bond Funds vs. Bonds
 Understanding Bond
   Funds
 Taxable vs. Municipal
   Bond Funds
 Evaluating a Bond Fund
 Money Market Funds
 How Bonds Work
 Bond Ratings
 Individual Bond Strategies
 Prices, Rates, and Yields
 Credit and Default Risks
Getting Started
Diversify Your Portfolio
Risks of Fixed Income
Investing
Tax Implications
Bond Funds vs. Bonds
Understanding Bond
Funds
Taxable vs. Municipal
Bond Funds
Evaluating a Bond Fund
Money Market Funds
How Bonds Work
Bond Ratings
Individual Bond Strategies
Prices, Rates, and Yields
Credit and Default Risks