What protects your money best?

For fixed-income investors, the choice between owning individual bonds and investing in a bond fund can shape not only returns, but also how predictable your portfolio is. Individual bonds are loans to a company or government that you can hold until maturity, while bond funds pool many of these loans into one professionally managed investment. Both can serve as safe havens compared to stocks — but their risks, costs, and behavior in volatile markets are more different than many investors realize.

How bonds and bond funds differ for your portfolio

The main difference is that individual bonds pay interest and return the principal at maturity (assuming no default), whereas a bond fund holds many bonds at one time and trades them continuously. While bondholders get paid interest regardless of whether markets rise or fall, they still face risk if a borrower’s credit weakens or they default.

To limit the impact of a bad borrower, “people buy bond funds — a variety of corporate and/or government bonds,” says Samantha Mockford, associate wealth advisor at Citrine Capital. She adds that bond funds spread risk among multiple issuers, much like “stacking pies and cutting a bite out of many thin cakes.” “This way, your investment won’t be affected by one or two unlucky choices.”

Matthew Hoffaker, founder of Pay It Forward Financial Planning, warns that many investors misunderstand how these products behave and assume bond funds will work the same way as individual bonds. The values ​​of individual bonds can fluctuate before maturity because they trade on the open market, where prices change with interest rates, credit risk, and investor demand. However, if they are held to maturity and the issuer does not default, they effectively “protect the original principal” and have a specified maturity value, Hoffaker says. Meanwhile, the value of a bond fund also fluctuates with the market as its underlying bonds are bought and sold (rather than held to maturity), but the fund itself has no set maturity value.

Differences in costs

Buying an individual bond outright may seem free, but Alvin Carlos, managing partner at District Capital Management, points out that “the cost is baked into the price” through the bond’s bid-ask spread. This cost can rise if you frequently trade before the maturity date. Other costs can creep in, too: Although not always, Hoffaker points out that custodians sometimes charge a transaction fee per bond — like $1 per bond, for example. If you buy an interest-bearing bond on the secondary market, the buyer will usually compensate the seller for any interest owed.

Like individual bonds, bond funds also often incur transaction fees; However, the main difference is that bond funds have transparent expense ratios. You can find “a good bond fund as low as 0.03%,” says Carlos, and managers active in bond markets — where inefficiencies are greater — sometimes have a better chance of outperforming indexes than their equity fund counterparts.

Interest rate risk of bonds and bond funds

Interest rates and bond prices move in opposite directions – when interest rates rise, the market value of existing bonds usually falls because new bonds offer higher yields, making older, lower-yielding bonds less attractive. With a staggered portfolio of single bonds — a strategy where you buy bonds with staggered maturities — “you can control your maturities, so when short-term bonds mature, you can reinvest at new rates,” Carlos says. This fixed rollover of bonds can make future cash flows more predictable in a rising interest rate environment and help smooth out the impact of price changes over time.

Meanwhile, bond funds “are constantly buying and selling, so the portfolio never matures,” Carlos says. This means it may take longer for the fund’s return to adjust upwards after interest rates rise. Additionally, Hofaker points out that bond funds often pay monthly dividends, which can be attractive to investors who need steady income — even though the value of the fund itself can still decline.

Bottom line

There is no universal winner in the individual bond versus bond funds debate, it comes down to your goals, timeline, and ability to withstand market volatility. If you value steady cash flows for specific future needs, holding individual bonds to maturity can provide stability. If you want broader diversification, professional oversight, and easier reinvestment, a low-cost bond fund may serve you better.

As Carlos says: “The average investor is usually better off just buying a low-cost bond fund, as long as he or she is prepared to make a loss during years when interest rates rise.”