If you are investing in bonds for income, you most likely want to minimize any risk of loss to your portfolio. Since no investment is entirely risk free, you need to understand where the risks with bonds lie. One risk is the possibility that the issuer won’t pay the interest or repay the principal at maturity. There’s also reinvestment risk, or the risk that your bonds will mature while interest rates are falling. When that happens and you buy new bonds with a lower interest rate, you reduce the income stream that you are depending on.
Laddering is a strategy that minimizes the risk of being locked in at a single interest rate and provides added liquidity to your portfolio. It involves buying a series of bonds (perhaps from different issuers) with a range of maturities. The staggered maturities of the “laddered” bonds can reduce the likelihood of you dealing with reinvestment shock if interest rates happen to be lower when some of your bonds mature. Creating a laddered portfolio can help even out volatility in your income stream while allowing you to estimate how much your portfolio will yield from year to year.
Another benefit of a diverse,* laddered portfolio of bonds is that it can reduce your exposure to default risk. The default of one issuer in a portfolio that holds bonds from multiple issuers is less damaging than it would be in a portfolio concentrated in bonds from just one or two issuers.
The Mechanics of Laddering
As an example, assume that you divide up your portfolio by buying equal dollar amounts of bonds with two-, four-, six-, eight-, and 10-year maturities. So, the average maturity in your portfolio is six years. As each bond matures, you replace that bond with one equal to the longest maturity in your portfolio. For example, when your two-year bond matures, replace it with a 10-year bond. The 10-year bond you initially purchased now has eight years until it matures. And the eight-year bond has six years to maturity and so on. Despite these changes, the average weighted maturity of your portfolio does not change — it remains at six years.
When interest rates fall, your laddered portfolio protects you since the longer maturity bonds at the top of the ladder are still paying above-market rates. And when interest rates start climbing, you reinvest maturing bonds at the bottom of the ladder in higher yielding, longer maturity bonds.
You can also use laddering as a strategy if you are investing in certificates of deposit (CDs) for income. The principle is the same except you are buying bank-issued CDs instead of bonds.
As an income investor, ensuring a steady, predictable stream of income is critically important. Your investment professional can help you determine if laddering bonds or CDs is a smart strategy for achieving your goals.