To reduce interest-rate risk in a bond portfolio, measure its duration and maturity exposure, then compare them with when you expect to need the money. Shorter maturities and, all else equal, higher coupons generally mean less price sensitivity to rate changes. Neither choice eliminates risk: it can affect income and reinvestment, and it does not remove credit, liquidity, inflation, or other risks.
What happens to bond prices when interest rates rise?
When market rates rise, the market value of existing fixed-rate bonds generally falls: new bonds may offer higher rates, making older bonds with lower coupons less attractive at their previous prices. The SEC Office of Investor Education and Advocacy explains in its 2013 Investor Bulletin that a bond’s price can change over time with market interest rates. A U.S. government guarantee, where applicable, covers timely interest and principal at maturity; it does not guarantee the bond’s market price if you sell before then.
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The size of a bond’s price response depends in part on its maturity, coupon, and other features. Longer-maturity bonds generally have more interest-rate risk than otherwise similar shorter-maturity bonds. All else equal, a lower-coupon bond is generally more sensitive to rate changes than a higher-coupon bond.
How does duration affect a bond portfolio?
Duration is an estimate of how sensitive a bond’s price is to changes in yield. A simplified estimate is: percentage price change ≈ −duration × change in yield, with the yield change expressed as a decimal. For illustration, a bond or fund with a duration of 5 years would have an estimated price change of about −5% for a 1-percentage-point increase in yield, before considering income and other effects. This is an approximation, not a forecast or guaranteed loss.
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The estimate assumes a roughly linear relationship between price and yield, but the actual relationship is nonlinear. The estimate is less dependable for large yield moves or securities whose cash flows can change. Duration also changes as a bond approaches maturity. CFA Institute’s 2026 curriculum material explains duration as a tool for assessing interest-rate exposure, not a promise about a future return.
Ways to reduce rate sensitivity—and their tradeoffs
| Approach | How it can reduce interest-rate risk | Tradeoff to consider |
|---|---|---|
| Shorten maturity exposure | Shorter-maturity bonds generally have less rate sensitivity than otherwise similar longer-maturity bonds. | Changing maturity changes the timing of principal repayment and may change income and reinvestment exposure. |
| Compare duration before buying | Duration gives an estimated measure of price sensitivity that a broad label such as “short-term” may not convey. | It is an estimate, and it can be less informative for large yield changes or securities with variable cash flows. |
| Consider coupon alongside maturity | All else equal, higher-coupon bonds are generally less sensitive to rate changes than lower-coupon bonds. | Coupon alone does not describe the full risk or return; consider yield, cash-flow timing, and reinvestment needs too. |
| Relate duration to the spending horizon | Considering when you expect to use the money helps frame the balance between price changes and reinvestment of coupons. | Matching duration to a horizon is not a universal guarantee of a particular result. |
Longer-term bonds generally offer higher yields than similar short-term bonds as compensation for greater rate risk. A higher yield is therefore not a risk-free improvement.
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How to review a bond fund’s interest-rate exposure
A bond fund can lose value when rates change, and its holdings and exposures can vary. A fund’s name or “ultra-short” label does not make it risk-free. Review its current official documents rather than relying on the label alone.
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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minute- Find the fund’s duration. Check the prospectus and latest shareholder report for duration and other information about interest-rate exposure.
- Look through its holdings. Funds may hold government, municipal, corporate, mortgage-backed, or other debt securities. These can differ in duration and other risks.
- Check risks beyond rates. Consider credit quality and default exposure, liquidity, and prepayment or call exposure, particularly where cash flows can change.
- Compare the fund with your time horizon and cash needs. A duration figure is most useful when considered alongside when you may need to sell or spend the money.
How to weigh duration against your investment horizon
A bond’s total return can reflect coupon payments and principal, the reinvestment of coupons, and a gain or loss if the bond is sold. These components help explain why lower price sensitivity is not the only consideration: a portfolio can also face reinvestment risk when cash flows arrive and must be invested at new rates.
CFA Institute’s 2026 curriculum material describes Macaulay duration as the point at which price risk and coupon-reinvestment risk balance under its specified framework. That relationship can help an investor think about a known future spending date, but it is not a general guarantee that a portfolio will meet a goal. The appropriate exposure depends on the horizon and planned cash needs.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to compare before changing a portfolio
Compare candidate bonds or funds across the dimensions that affect both rate sensitivity and the likelihood of receiving the cash flows you expect:
- Duration: the estimated price sensitivity to yield changes.
- Maturity and principal timing: when principal is scheduled to be repaid.
- Coupon and yield: the income and sensitivity tradeoffs, including whether coupons may need to be reinvested.
- Credit quality: the possibility that an issuer will not make scheduled payments.
- Liquidity: the possibility of receiving less than expected if you need to sell.
- Prepayment or call exposure: whether cash flows may change, especially for securities that can be repaid early.
- Your horizon and cash needs: when you may need principal or other funds from the portfolio.
Duration addresses only one dimension of bond risk. The SEC’s general bond-risk and bond-fund materials also identify risks such as credit, liquidity, and prepayment; inflation can also affect the purchasing power of returns. Reducing rate sensitivity does not remove these other exposures. This is general educational information, not individualized investment advice.
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