A corporate bond is a loan you make to a company, and the company pays you back with interest

When you buy a corporate bond, you are lending money to a corporation. The company promises to pay you a fixed amount of interest (called the coupon) at regular intervals — usually twice a year — and to return your full principal amount on a specific date in the future (called the maturity date). That is the entire transaction. You are not buying a piece of the company the way you would with stock. You are a creditor, not an owner.

The company issues bonds because it needs cash for something: to build a factory, pay off other debts, fund research, or expand operations. Rather than borrow from a bank, it borrows from many people at once by selling bonds. This spreads the risk and often costs the company less than a traditional loan.

For you, a bond is a way to earn a predictable return without the daily price swings of stocks. You know exactly how much you will receive and when you will receive it — as long as the company does not default (fail to pay).

Key Takeaways

  • A corporate bond is a debt security: you lend money to a company and receive fixed interest payments plus your principal back at maturity.
  • The coupon rate (interest rate) is set when the bond is issued and does not change, even if market interest rates rise or fall.
  • Bond prices move in the opposite direction of interest rates — when rates go up, existing bond prices fall, and vice versa.
  • The credit rating of the company (issued by agencies like Moody's or S&P) tells you how likely the company is to pay you back.
  • You can hold a bond until maturity or sell it before maturity on the secondary market, though the price you receive may be higher or lower than what you paid.

The coupon rate stays the same for the life of the bond

When a company issues a bond, it sets a coupon rate — the percentage of the bond's face value you will receive each year as interest. If you buy a $1,000 bond with a 5% coupon, you will receive $50 per year (usually split into two $25 payments). That rate does not change, no matter what happens to the company or the broader economy.

The coupon rate is determined by several factors: the company's credit quality, how long the bond lasts, and what interest rates are doing in the market at the time of issue. A company with a strong credit rating can offer a lower coupon because investors trust it will pay back. A weaker company must offer a higher coupon to attract lenders. Similarly, longer bonds usually offer higher coupons than shorter ones, because you are tying up your money for more years.

The coupon rate is fixed, but the price of the bond itself moves. This is where many people get confused. If you buy the bond when it is first issued and hold it to maturity, you will receive exactly what you bargained for. But if you sell the bond before maturity, you might receive more or less than you paid, depending on how interest rates have moved.

Bond prices fall when interest rates rise

Imagine you bought a $1,000 corporate bond paying 4% interest ($40 per year) when that was a competitive rate. Six months later, interest rates rise, and new bonds from the same company now pay 6% ($60 per year). Your old bond is now less attractive — it pays less than what new investors can get elsewhere. If you want to sell it, you will have to accept a lower price to make up the difference. A buyer might pay you $900 for your bond, because the higher price combined with the 4% coupon brings their effective return closer to the 6% they could get elsewhere.

The opposite happens when interest rates fall. If new bonds now pay 2%, your 4% bond becomes more valuable. You could sell it for more than $1,000 because buyers will pay a premium to lock in the higher coupon.

This inverse relationship between bond prices and interest rates is one of the most important things to understand about bonds. It does not affect you if you hold the bond until maturity — you will still get your full $1,000 back. But it matters if you need to sell before maturity, or if you are comparing the performance of your bond investment to other investments.

Credit ratings tell you the risk of default

Three major agencies — Moody's, Standard & Poor's (S&P), and Fitch — rate the creditworthiness of companies that issue bonds. These ratings range from AAA (safest) down to C or D (highest risk of default). The rating reflects the agency's judgment about whether the company will be able to pay interest and principal on time.

Bonds rated BBB or higher are considered "investment grade" — relatively safe. Bonds rated BB and below are "high yield" or "junk" bonds — they carry a higher risk of default, but they pay higher coupons to compensate you for that risk. A company in financial trouble might issue a bond paying 10% or more, because investors demand extra compensation for the chance they might not get paid back.

Credit ratings can change. If a company's business deteriorates, an agency might downgrade its rating, which usually causes the price of its existing bonds to fall (because investors now see more risk). If a company improves, an upgrade can cause prices to rise. You can find credit ratings for any publicly issued corporate bond through financial websites, your broker, or the company's investor relations page.

You can sell a bond before maturity on the secondary market

Bonds are not locked away until maturity. You can sell a bond you own to another investor at any time through the secondary bond market. Your broker can execute the sale for you, just as they would for a stock. The price you receive depends on interest rates, the company's credit rating at that moment, and how much time remains until maturity.

The secondary bond market is less transparent than the stock market. There is no single exchange where all corporate bonds trade. Instead, dealers buy and sell bonds over the counter, and prices can vary between dealers. This means you may not always get the best price, and you should compare quotes from multiple sources if you are selling a large position.

Selling before maturity also means you will not receive all the coupon payments you originally expected. If you sell a bond halfway through its life, you will receive accrued interest (the interest earned since the last coupon payment) from the buyer, but you will miss all future coupons. The buyer will receive those instead.

The difference between par value, coupon, and yield

Par value (also called face value) is the amount the company will pay you back at maturity. Most corporate bonds have a par value of $1,000, though some are issued in other denominations. This is the amount on which the coupon is calculated.

The coupon is the fixed interest payment, expressed as a percentage of par value. A 5% coupon on a $1,000 bond means $50 per year.

Yield is the actual return you will earn, taking into account the price you paid. If you buy a $1,000 bond with a 5% coupon for $900, your yield is higher than 5% because you paid less than par. If you pay $1,100 for the same bond, your yield is lower than 5%. Yield is what matters for comparing bonds to other investments, because it reflects what you actually earn on your money.

What happens if a company defaults

If a company cannot pay its debts, it may file for bankruptcy. When that happens, bondholders are creditors — you have a legal claim on the company's assets ahead of stockholders. This means if the company is liquidated, you have a better chance of recovering some of your money than stock owners do. However, you may not recover the full amount you invested.

The order of repayment in bankruptcy is: secured creditors first (those with claims on specific assets like equipment), then unsecured creditors (including most bondholders), then preferred stockholders, then common stockholders. Within each category, there are further priorities. Senior bonds (those issued first) often rank ahead of junior bonds.

Default is rare for investment-grade bonds from stable companies. It is more common for high-yield bonds from companies in financial distress. This is why credit ratings matter: they help you assess the real risk you are taking.

Frequently Asked Questions

What is the difference between a corporate bond and a government bond?

A corporate bond is issued by a company; a government bond is issued by a federal, state, or local government. Government bonds are generally considered safer because governments can raise taxes or print money to pay debts, while companies cannot. This means government bonds typically pay lower interest rates than corporate bonds from companies with similar credit quality.

Can I lose money on a bond if I hold it to maturity?

Only if the company defaults. If the company pays as promised, you will receive your full principal back plus all coupon payments, regardless of how much the bond's market price fluctuated while you held it. If you sell before maturity, you can lose money if interest rates have risen or the company's credit rating has fallen.

How often do I receive coupon payments?

Most corporate bonds pay coupons twice a year (semi-annually), though some pay quarterly or annually. The payment schedule is set when the bond is issued and does not change. Your broker or the bond's prospectus will tell you the exact dates.

What does it mean if a bond is "callable"?

A callable bond gives the company the right to pay off the bond early (before maturity) if it chooses. Companies typically call bonds when interest rates fall, so they can refinance at a lower rate. If your bond is called, you receive your principal back but lose the remaining coupon payments. Callable bonds usually pay higher coupons to compensate you for this risk.

How do I buy a corporate bond?

You can buy corporate bonds through a brokerage account, the same way you buy stocks. You can purchase newly issued bonds directly or buy existing bonds on the secondary market. Your broker can help you search for bonds that match your goals and show you the current price and yield.