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Bonds and Fixed Income

📃 What a Bond Is

A bond is essentially a loan you make to a government or company. In return, they pay you regular interest and promise to repay the amount at the end of the term. Bonds and similar fixed income sit between cash and shares: steadier than shares, with more return than cash, and they play a useful role in balancing a portfolio.

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Key Point: When you buy a bond you are lending money for a set period, receiving regular interest (the coupon) and getting the principal back at maturity. Government bonds are generally safer than company bonds, which pay more to compensate for higher risk. Bond prices move opposite to interest rates: when rates rise, existing bond prices fall, and vice versa. In a portfolio, bonds add income and stability, cushioning the swings of shares. Most people access them through a fund rather than buying individual bonds.

How a Bond Works

You lend an amount by buying the bond
You receive regular interest, called the coupon
At maturity, the principal is repaid
The issuer's reliability affects the risk and the rate

Government vs Company Bonds

Government bonds are generally the safest, since governments are reliable borrowers. Company bonds pay a higher interest rate to compensate for the greater risk that the company could struggle to repay. More risk, more return is the usual trade-off.

📉 Prices, Rates and Risk

Prices Move Opposite to Rates

This catches people out. If you hold a bond paying a fixed rate and market interest rates rise, new bonds pay more, so your older, lower-paying bond becomes less attractive and its price falls. If rates fall, your higher-paying bond becomes more valuable. Prices and rates move in opposite directions.

Rates up, bond prices down: A common surprise is that bonds can lose value when interest rates rise, even though they are seen as safe. If you hold a bond to maturity you still get your principal back, but the market price moves in the meantime.

Key Risks

RiskWhat It Means
Interest rate riskPrices fall when rates rise
Credit riskThe issuer may fail to pay
Inflation riskFixed interest may not keep pace with prices

Hold to Maturity vs Sell Early

If you hold a bond to maturity and the issuer pays, you receive the agreed interest and your principal back. If you sell before maturity, you get the market price, which may be more or less than you paid depending on where rates have moved.

🧩 The Role in a Portfolio

Income and Stability

Bonds provide regular income and tend to be steadier than shares, so they cushion a portfolio. When shares fall, a bond allocation can soften the overall drop, which is why more conservative investors and retirees often hold more bonds.

Balancing Shares and Bonds

A common idea is to hold more shares when you are young and have time, and more bonds as you approach needing the money, for steadier income and less volatility. This mirrors how KiwiSaver funds shift from growth to conservative.

Shares: higher growth, bigger swings
Bonds: steadier income, smaller swings
A mix balances growth against stability
More bonds as you near needing the money

Accessing Bonds

Most people get bond exposure through a fund or a balanced KiwiSaver fund, rather than buying individual bonds, which gives diversification and removes the work of choosing issuers. See our Index Funds and ETFs guide.

💡 Common Mistakes

Mistake 1: Thinking Bonds Cannot Lose Value

Bond prices fall when rates rise. They are steadier than shares but not risk-free.

Mistake 2: Chasing High-Yield Without Understanding Credit Risk

A bond paying a very high rate usually carries higher risk of the issuer not paying. The extra yield is compensation for that risk.

Mistake 3: Ignoring Inflation

Fixed interest can be eroded by inflation, so the real return may be lower than the headline rate suggests.

Mistake 4: Holding Only Bonds When Young

With decades to invest, an all-bond portfolio may miss the growth that shares provide. Match the mix to your timeframe.

A Simple Approach

1. Understand a bond is a loan paying interest
2. Remember prices move opposite to rates
3. Weigh government vs company bonds for risk and return
4. Use bonds for income and stability in a balanced mix
5. Access them through a fund for diversification

See our Risk and Return and Diversification guides. Final word: bonds are loans that pay regular interest and return your principal at maturity, sitting between cash and shares for risk and return. Their prices move opposite to interest rates, and they add income and stability to a portfolio. Most people hold them through a fund. This is general information, not financial advice.

🎯 Test Your Knowledge

Quiz on Bonds and Fixed Income (20 Questions)

1. What is a bond, essentially?
A share in a company
A bank account
An insurance policy
A loan you make to a government or company
2. The regular interest a bond pays is called the:
Dividend
Coupon
Premium
Excess
3. At maturity, a bond:
Repays the principal
Pays nothing
Becomes a share
Doubles in value
4. How would you describe the risk level of government bonds?
Safer than company bonds
Riskier than company bonds
The same risk as shares
Risk-free with high returns
5. Company bonds pay more to:
Compensate for higher risk
Be generous
Avoid tax
Match cash
6. How do bond prices typically move when interest rates change?
The same way as rates
Never
Opposite to interest rates
Only up
7. When rates rise, existing bond prices:
Rise
Stay the same
Disappear
Fall
8. Bonds sit, for risk and return, between:
Property and gold
Crypto and cash
Nothing
Cash and shares
9. If you hold a bond to maturity and the issuer pays, you get:
Nothing
Only the market price
The agreed interest and your principal back
A share instead
10. Credit risk is the risk that:
Rates rise
Inflation falls
The issuer may fail to pay
Shares rise
11. In a portfolio, bonds provide:
Income and stability that cushion share swings
The highest growth
No benefit
Only risk
12. As you near needing the money, a common idea is to hold:
All shares
More bonds for steadier income
Only crypto
Nothing
13. Most people access bonds through:
Buying every individual bond
A savings account only
A fund or a balanced KiwiSaver fund
Property
14. Thinking bonds cannot lose value is:
A mistake; prices fall when rates rise
Correct
True for all bonds
Guaranteed by law
15. A very high yield usually signals:
A safe bargain
Higher risk of the issuer not paying
No risk
A government guarantee
16. What does inflation risk mean for bond investors?
Bonds always beat inflation
Prices never rise
Fixed interest may not keep pace with prices
Nothing
17. Holding only bonds when young may:
Maximise growth
Miss the growth shares provide
Remove all risk
Be ideal
18. Selling a bond before maturity gives you:
Exactly what you paid always
The market price, which may be more or less than you paid
Nothing
Double your money
19. A mix of shares and bonds:
Is always all shares
Removes all return
Is pointless
Balances growth against stability
20. What is the key overall takeaway about bonds and fixed income?
Bonds are risk-free
Bonds always beat shares
Avoid bonds entirely
Bonds pay interest and add stability; prices move with rates, so understand the risks

Return to Learning Center

Frequently Asked Questions

What is a bond?

A bond is a loan you make to a government or company that pays regular interest and returns the principal at maturity.

How do bonds differ from shares?

Bonds pay fixed interest and rank ahead of shares if a company fails, so they are generally lower risk and lower return than shares.

Why do bond prices fall when interest rates rise?

Existing bonds paying older, lower rates become less attractive than new higher-rate bonds, so their market price falls.

Are bonds safe?

Government bonds are low-risk; corporate bonds carry more risk depending on the issuer. All bonds still carry interest-rate and inflation risk.

Related guides

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