Risks with Fixed Income Investments

Fixed income is often chosen because it is expected to be steadier than stocks and because many securities promise scheduled interest payments and repayment of principal at maturity. Those features can make bonds useful, but they do not make fixed income free of loss. Prices move when interest rates change, issuers can weaken or default, inflation can erode purchasing power, and investors sometimes discover that a security is difficult to sell precisely when cash is needed.

The more useful way to think about risk is to connect it to the purpose of the money. The goals of investing determine which risks matter most because a temporary price decline may be tolerable for an investor who can hold an appropriate bond to maturity, while the same decline can be damaging for someone who needs to sell next month. Fixed income risk is therefore not one number or one probability. It is the possibility that the investment fails to deliver the cash flow, purchasing power, liquidity or portfolio stability for which it was selected.

Fixed income risk starts with the investment objective

Different fixed-income securities expose investors to different combinations of risk. A short U.S. Treasury security, a long investment-grade corporate bond, a high-yield bond, a municipal bond and a mortgage-backed security may all sit inside the fixed-income category, yet their sensitivity to interest rates, credit conditions, liquidity and repayment timing can differ considerably. FINRA identifies interest-rate, duration, call, reinvestment, credit, inflation, liquidity, event, sovereign and currency risk among the risks that can affect bonds and bond funds.^[1]

The first mistake is to judge risk only by asking whether an issuer is likely to repay principal. Default risk is important, but a bond that ultimately repays at maturity can still produce an unsatisfactory result if the investor has to sell it earlier at a loss, if inflation has sharply reduced the real value of its payments, or if a call provision returns the principal when reinvestment opportunities are worse. A security can be sound from a credit perspective and still be poorly matched to the investor’s actual need.

Time horizon changes the calculation. Investors who know that money will be required within a short period generally have less capacity to accept large price fluctuations because they may not have time to wait for markets to recover or for a bond to mature. Investors with a longer horizon can sometimes tolerate more interim volatility, but they still need to understand what is producing the yield they are receiving and whether that risk is being taken deliberately.

Risk also needs to be evaluated across the whole portfolio. A bond that looks conservative by itself may add little diversification if it is exposed to the same economic stress as the investor’s other holdings, while a low-yielding government security may perform a valuable stabilizing role even if its expected return is modest. Good fixed income investing starts with the role of the allocation rather than with a search for the highest available yield.

Interest-rate risk and duration

Interest-rate risk is the risk most investors encounter even when the issuer remains financially sound. When market interest rates rise, newly issued fixed-rate bonds become available with more attractive coupons or yields, so existing bonds paying lower rates generally have to fall in price to compete. When market rates fall, the opposite force usually supports the prices of existing fixed-rate bonds with higher coupons.

The size of that price movement depends heavily on duration. Duration is commonly expressed in years and provides an estimate of how sensitive a bond or bond portfolio is to a change in interest rates. A bond with a higher duration is normally more sensitive to rate movements than one with a lower duration, which is why two high-quality bonds can experience very different price changes even though neither issuer’s creditworthiness has changed.

Maturity is related to interest-rate risk but is not identical to duration. Longer-maturity fixed-rate bonds usually have greater rate sensitivity than otherwise similar shorter bonds because more of their cash flows arrive further in the future, although coupon size and other features also affect duration. Investors who may need to sell before maturity should therefore pay attention to duration rather than assuming that high credit quality alone protects the market value of the position.

Holding an individual bond to maturity changes how interim price movements affect the investor, but it does not erase risk. Investor.gov notes that if a bond is held to maturity the investor receives its face value plus interest, while a sale before maturity may occur above or below face value; it also lists credit, inflation, liquidity and call risk alongside interest-rate risk.^[2] The maturity promise is therefore useful only if the issuer pays as agreed and the investor can actually hold the bond until that date.

Purchase price adds another layer. An investor who pays a premium above face value should not confuse repayment of par at maturity with recovery of the amount originally invested, because the premium gradually disappears as the bond approaches maturity. Yield to maturity is more informative than the coupon rate when evaluating that trade-off because it incorporates the price paid, the scheduled payments and the maturity value under the assumptions used in the calculation.

Credit, default and spread risk

Credit risk concerns the issuer’s ability and willingness to make promised interest and principal payments. A deteriorating business, weakening tax base, excessive leverage or another financial shock can make investors less confident that the issuer will pay as agreed. In the worst case the issuer defaults, and bondholders may recover only part of what they are owed or may face a lengthy restructuring process.

Market prices often react before an actual default occurs. Investors demand more yield from issuers whose creditworthiness appears weaker, so the spread between a risky bond’s yield and the yield on a lower-risk benchmark can widen. When required spreads rise, the market price of the existing bond usually falls even if every scheduled payment has been made so far, which means an investor can suffer a substantial mark-to-market loss without a formal default.

Credit ratings can help organize information about relative credit quality, but they are not guarantees and they can change. An investor still needs to understand the issuer, the security’s place in the capital structure, any collateral or guarantees, and the conditions that could impair repayment. Lower-rated bonds often offer higher yields because investors require compensation for bearing more credit risk, not because the market has discovered a simple way to earn extra income without a corresponding trade-off.

Concentration can turn a manageable credit exposure into a portfolio problem. Holding many bonds from the same company, industry, municipality or economic region can cause several positions to weaken for the same reason, while diversification across issuers can reduce the damage from a single default. The bonds that best serve a capital-preservation objective are therefore not chosen on yield alone, especially when one issuer represents a large share of the money that must remain available.

International bonds add risks that domestic investors do not always encounter in the same form. Sovereign credit conditions, political events and changes in currency exchange rates can affect returns, and a gain measured in the bond’s local currency can become a loss after conversion into dollars. Currency hedging may reduce one source of uncertainty, but it introduces costs and does not remove the underlying interest-rate or credit risk of the bond itself.

Inflation and reinvestment risk

A fixed coupon can be predictable in dollars while becoming less useful in real terms. Inflation reduces the purchasing power of future interest and principal payments, so an investor who receives the same nominal amount year after year may be able to buy less with it. The risk of inflation becomes particularly important for long holding periods and for investors who expect bond income to cover living expenses that rise over time.

Longer maturity does not automatically mean that a bond will always offer a higher yield. Yield curves can become flat or inverted, and yields reflect many forces besides inflation expectations, including monetary policy, economic conditions, demand for safe assets and credit risk. What remains true is that extending maturity usually exposes a fixed-rate bond to more interest-rate sensitivity, so accepting a longer term should have a clear purpose rather than being based on an assumption that the extra time will always be rewarded.

Inflation-protected securities can address part of the purchasing-power problem, but they do not eliminate every other risk. Treasury Inflation-Protected Securities adjust principal with changes in the Consumer Price Index, yet their market prices can still move before maturity as real yields change. An investor who sells at an unfavorable time can therefore realize a loss even though the security was designed to provide inflation-linked principal adjustments.

Reinvestment risk works in a different direction. Coupon payments, maturing principal and proceeds from called bonds eventually have to be spent or reinvested, and the available rate at that future date may be lower than the rate on the original investment. An investor who builds a retirement income plan around today’s yields can be disappointed even when every bond pays exactly as promised if later maturities have to be replaced with lower-yielding securities.

A ladder of different maturities can spread reinvestment decisions over time instead of concentrating them on one date. It does not guarantee a particular future income level, but it can reduce the dependence on whatever market rate happens to prevail when a single large holding matures. The same principle applies to cash-flow planning more broadly: matching maturities to expected spending can lower the chance that an investor is forced to sell a longer-term bond at an unfavorable market price.

Call and prepayment risk

Some bonds give the issuer the right to repay investors before the stated maturity date. Issuers are often more likely to exercise a call when market rates have fallen because they may be able to refinance their debt more cheaply. The investor receives principal back, but the attractive coupon may disappear earlier than expected and the returned money may have to be reinvested at a lower rate.

Callable bonds therefore create an asymmetry that matters when comparing yields. The investor bears the risk that the bond’s price falls when rates rise, but part of the price appreciation that might otherwise occur when rates fall can be limited by the possibility of a call. Yield to call and yield to worst can be more relevant than a single yield-to-maturity figure when the bond’s terms allow early redemption.

Mortgage-backed and other asset-backed securities can have a related form of prepayment risk because the underlying borrowers may repay loans sooner than expected. Falling rates often encourage mortgage refinancing, which can return principal to investors at a time when replacement yields are lower. The cash-flow timing of these securities is therefore less certain than the scheduled maturity of a plain non-callable bond, and that uncertainty should be understood before treating the investment as a predictable income stream.

Prepayment behavior also complicates interest-rate sensitivity. A security that is expected to return principal fairly quickly may remain outstanding longer when refinancing slows, leaving the investor exposed to a less attractive rate for more time than anticipated. Complex fixed-income products can therefore combine rate, reinvestment and cash-flow timing risk in ways that are not obvious from the coupon alone.

Liquidity and market-access risk

Liquidity risk appears when an investor wants to sell but cannot find a buyer quickly at a reasonable price. Many bonds do not trade as frequently as major stocks, and transaction prices can vary depending on issue size, market conditions, dealer inventory and the urgency of the seller. A bond may still have substantial economic value while being costly to convert into cash on short notice.

Liquidity often worsens when investors most want it. During periods of market stress, buyers may demand larger discounts for securities that are hard to evaluate or finance, and bid-ask spreads can widen. An investor who planned to hold a bond for income can then face a much larger loss than expected if an emergency, portfolio withdrawal or change in circumstances forces an early sale.

The risk is especially important when a fixed income strategy is supposed to fund near-term spending. Money that must be available on a particular date should not be dependent on selling a thinly traded security at whatever price the market happens to offer. Maturity structure, cash reserves and the liquidity of the instruments all need to fit the spending schedule.

Liquidity should also be separated from credit quality. A strong issuer does not guarantee a highly active secondary market for every bond it has issued, and a security can be difficult to sell even when default risk is low. Investors who expect to trade individual bonds should therefore consider both the issuer and the trading characteristics of the specific issue rather than assuming that one automatically solves the other.

Bond funds change how risk is experienced

Bond funds can provide broad diversification and professional management, but they do not simply reproduce the economics of holding one individual bond to maturity. A conventional open-ended bond fund continuously buys and sells securities as cash enters and leaves the portfolio and as managers follow the fund’s mandate. The fund itself usually has no maturity date at which every shareholder receives a fixed face value.

Investor.gov states that investors can lose money in bond funds and identifies credit, interest-rate and prepayment risk among the risks they face; it also notes that funds holding longer-maturity bonds are generally more exposed to interest-rate risk than funds holding shorter maturities.^[3] Even a fund that owns high-quality government bonds can decline in value when market rates rise because the government guarantee concerns payment on the underlying securities, not the fund’s share price.

The distinction matters most when the investor has a date-specific liability. An individual bond held to maturity can provide a known contractual maturity value subject to the issuer paying as agreed, while a bond fund offers a fluctuating net asset value and an evolving portfolio. The fund may still be the better tool for diversification, convenience or ongoing exposure, but it should not be selected under the assumption that “bond” and “bond fund” are interchangeable structures.

Fund investors should pay attention to duration, credit quality, sector concentration, use of derivatives, expenses and the manager’s mandate. A short-term government fund and a long-duration high-yield fund may both appear under a broad fixed-income label while serving very different purposes. Comparing funds by recent yield alone can conceal differences in the amount and type of risk being taken to produce that income.

Portfolio-level risk and income shortfall

The old version of this article focused heavily on the possibility that a fixed-income portfolio might fail to produce enough income, and that remains a legitimate portfolio-level risk. The problem is broader than bond selection because a retirement or spending plan can fail even when every security behaves exactly as expected if the amount invested, the withdrawal rate or the future cost of living was unrealistic. Investment risk and planning risk can reinforce one another.

Chasing additional yield is not a reliable cure for an income shortfall. Moving from high-quality bonds into lower-rated credit, extending duration or buying more complex income securities can raise expected income, but it also changes the probability and size of potential losses. A better process is to revisit the spending requirement, savings level, asset allocation and time horizon before deciding that the portfolio simply needs to take more bond risk.

The same discipline applies when managing returns and risk. Higher yield should be traced back to the risk that explains it, whether that is weaker credit, longer duration, poor liquidity, a call feature or another source of uncertainty. If the investor cannot identify why one bond yields materially more than a comparable alternative, the difference should not be treated as a free advantage.

Fixed income also needs to be considered alongside stocks, cash and other assets. The question of how to manage our investments across categories involves more than minimizing the volatility of each holding in isolation. A portfolio intended to fund decades of future spending may need growth assets to help preserve purchasing power, while money needed soon may deserve a much more conservative structure.

Managing fixed-income risk in practice

Risk management begins by matching the security to the job it is supposed to perform. Near-term spending needs usually call for greater attention to maturity, liquidity and credit quality, while a longer-term allocation can tolerate different forms of volatility if they are consistent with the investor’s objective. A bond selected for income, a bond selected for a known future payment and a bond selected for total return do not have to be judged by the same standard.

Diversification helps with issuer-specific credit risk, but it does not eliminate market-wide forces. A portfolio containing dozens of long-duration bonds can still fall sharply when rates rise, and a portfolio spread across many lower-quality issuers can still suffer when credit spreads widen across the market. Diversification needs to occur across the risk drivers that matter, not merely across a large count of securities.

Maturity planning can reduce the chance that an investor has to sell into an unfavorable market. A ladder or a schedule of securities maturing around expected cash needs can make principal available without requiring every position to be liquidated at prevailing prices. The arrangement still leaves reinvestment and inflation risk, but it places those risks in a structure that can be easier to manage than a single concentrated maturity.

Due diligence should continue after purchase. Changes in an issuer’s finances, a bond’s credit rating, the portfolio’s duration or the investor’s own spending needs can alter the role a security plays. A position that was appropriate when purchased can become poorly matched later without the bond itself having been a bad investment at the outset.

The central lesson is that fixed income offers different risks, not an absence of risk. Investors who understand which risks they are accepting can use bonds and bond funds more deliberately for income, capital preservation and diversification without assuming that every fixed-income security will behave safely in every environment. A sound plan does not try to eliminate uncertainty altogether; it tries to keep the risks that remain consistent with the purpose, timing and financial capacity behind the investment.