Bond Ladder

A bond ladder is a portfolio of bonds with maturities staggered across years: $100,000 spread over five rungs of $20,000 maturing in each of the next five years, each rung held to maturity. The maturing principal is reinvested at the long end, and the ladder rolls forward one year at a time. The structure works with Treasuries, certificates of deposit, and municipal bonds, each bringing its own tax treatment.

The ladder's advantage over a bond fund is the maturity date. An individual bond held to maturity returns its face value regardless of the rate path; a bond fund never matures, so its drawdown has to be earned back. The ladder also spreads reinvestment risk across years instead of betting one day's rate on the entire balance. Liquidity arrives by construction: a rung matures every year.

The build is arithmetic. $100,000 becomes five rungs of $20,000 maturing in one through five years; at an average 4.4% yield the ladder pays roughly $4,400 of interest a year, and $20,000 arrives every twelve months like a small paycheck. Each maturity buys a new five-year rung, and the ladder rolls forward indefinitely with the same structure. The investor never again makes one large timing decision; the calendar makes forty small ones instead.

The rate moves wash through gradually, which is the design. When rates rise, a bond fund with a seven-year duration falls roughly 7%, and the drawdown waits for recovery. The ladder's rungs keep maturing at face value, and each maturing rung reinvests at the new higher rates, converting the rate rise into income rather than a drawdown. When rates fall, the opposite trade-off applies: the ladder's income drifts down a rung at a time.

The tax treatment is per rung. Treasury rungs pay interest exempt from state and local income tax; CD rungs are FDIC-insured but fully taxable; municipal rungs are federally tax-exempt and suit high-bracket investors. Callable bonds complicate the structure because issuers call them away early in falling-rate markets, reinvesting the investor at the worst moment. Non-callable Treasuries and CDs are the standard rungs.

The ladder is the standard answer to two problems at once: near-term cash that needs known dates, and retirement income that needs a bridge before Social Security or RMDs begin. A five-year Treasury ladder funding a home purchase pays state-tax-free interest with a maturity date attached to every dollar. The same structure funding an early retirement converts a lump sum into a schedule.

I watched a colleague named Brent (yes, that Brent) park his down-payment fund in a 10-year bond fund because the yield was the highest on the screen. Rates rose, the fund fell 8%, and the house purchase became a drawdown decision. A ladder of the same money would have matured on schedule and never quoted him a loss.

The highest-leverage thing most Americans can do is match rungs to dates: Treasuries for state-tax efficiency, CDs for the FDIC label, and non-callable paper everywhere. Project the income with the fixed income calculator and the retirement bridge with the retirement income calculator.