Bond Ladder or Bond Fund: What Actually Matters for Retirement Income

Key takeaways

A bond fund is a ladder that is continuously rolled; over any long period the two behave alike, and a fund's price drop in a rate rise is the same loss a ladder holder has but does not see.
Ladders shine when specific dollars are needed on specific dates: a five-year spending floor, a known purchase, a bridge to Social Security.
Funds win on cost, diversification, and reinvestment for the part of the bond allocation that is not tied to dates.
Treasuries and TIPS are the right raw material for either; corporate and municipal bonds add credit risk that a retirement floor does not need.

Most of the ladder-versus-fund debate rests on a misunderstanding: that individual bonds held to maturity are "safe" from rate changes and bond funds aren't. They're the same asset in different packaging. What differs is how the packaging fits a retirement plan, and that's where the decision should get made.

The rate risk is the same

When rates rise, a bond fund's price falls, and the loss shows up on your statement. An individual bond's price falls by the same amount; you just don't sell, you wait to maturity, and you get par. But in the meantime that bond is paying a below-market coupon, and the shortfall over its remaining life equals the price drop. The fund, meanwhile, is reinvesting maturing and coupon cash at the new, higher rates and recovers over roughly its duration. Hold either one for a period equal to duration and you end up in nearly the same place.

The ladder holder feels better because the loss is invisible. The fund holder feels worse because it's printed. The economics don't care about feelings. The plan sometimes has to.

Where a ladder is the right tool

A ladder does one thing a fund can't: it delivers a known dollar amount on a known date. That matters when the plan needs exactly that.

A spending floor. The bucket approach holds several years of essential spending in safe assets. A ladder of Treasuries maturing each year for five or seven years provides those dollars no matter what rates or markets do in between, and it lets the retiree stop watching. This is the most common reason people build one.

A bridge. Say you retire at 62 and plan to claim Social Security at 70. That's an eight-year gap to fund. A ladder maturing each year through 70 covers it to the dollar.

A dated goal. A house purchase in three years, a tuition bill, a tax payment on a large Roth conversion. Money for a date belongs in a bond for that date.

Inflation-linked spending. A ladder of Treasury Inflation-Protected Securities delivers real dollars on schedule, which is about the closest thing to an inflation-indexed pension you can build yourself. Long TIPS ladders, thirty years of real income, have become practical to build, and we think they're the best floor available for a household that wants its safe money truly safe.

Where a fund is the right tool

For the rest of the bond allocation, the part that provides ballast, rebalancing capacity, and general stability rather than dated cash, a fund is simpler and usually cheaper.

Cost and diversification. A Treasury index fund costs a few basis points and holds hundreds of issues. Building a diversified corporate or municipal ladder in an individual account takes large positions and dealer markups that few investors ever see. For Treasuries the markup problem is small. For anything with credit risk, it isn't.

Reinvestment. A fund reinvests coupons and maturities automatically. A ladder throws off cash that somebody has to redeploy, and doing that on schedule, every time, is a real cost in attention.

Rebalancing. Selling a slice of a bond fund to buy stocks in a decline is a click. Selling a rung of a ladder means picking which bond and accepting the market price.

Flexibility. Plans change. A ladder built for one schedule is awkward to reshape.

The combination

Plenty of retirees use both. A Treasury or TIPS ladder covers a dated need, a known bill in a known year such as the gap before Social Security starts, and a low-cost bond fund, or two, holds the rest of the fixed income and does the general work. Our own portfolios hold their bonds in funds. The bond share is sized to several years of the spending the portfolio has to supply, and each withdrawal comes from whatever is above its target, which in a bad year for stocks means the bonds. That's how rebalancing and spending end up being the same motion.

What to build it from

For the floor, Treasuries and TIPS. The safe allocation has one job, which is to be safe. Corporate bonds add credit risk that shows up exactly when stocks are falling, and municipal bonds, useful in taxable accounts for high-bracket investors, are less liquid and harder to ladder well. Where the bond allocation sits in an IRA, the tax advantage of municipals disappears and Treasuries are the plain choice; our post on asset location covers which accounts should hold bonds at all. Brokered CDs can stand in for short Treasury rungs when their yields are higher, within FDIC limits.

What about target-maturity bond ETFs?

Funds that hold bonds maturing in a single year and liquidate at the end of it give you the diversification of a fund with the dated payout of a ladder. For a corporate or municipal ladder, they solve the diversification and markup problems nicely. For Treasuries, buying the bonds directly is cheaper and just as easy.

How we decide

The retirement income plan tells us the dollars needed each year and how much of that the portfolio has to supply, and that sets the size of the bond share. Funds hold it by default. A ladder earns its place when a specific bill lands in a specific year and the household wants that date matched exactly. And honestly, the stock-versus-bond allocation, which the plan sets first, is the decision that matters. Ladder or fund is just about how the bond portion is held.

Frequently asked questions

Do I lose money in a bond fund when rates rise?

The fund's price falls, and if you sell right away you realize a loss. If you hold for at least the fund's duration, the higher reinvestment rates offset the price drop and your return ends up close to the yield you started with. A ladder has the same economics with less visibility.

How long should my ladder be?

As long as the stretch of spending you want guaranteed regardless of markets. Five to eight years is common; a TIPS ladder for a full retirement can run thirty.

Should the ladder be in my IRA or my taxable account?

Usually the IRA, where interest isn't taxed annually and where bonds belong for location reasons. A ladder in a taxable account makes sense when the IRA is small or when the dated spending has to come from the taxable account for withdrawal-order reasons.

Are I bonds part of this?

I bonds are useful for a small inflation-protected reserve, limited to $10,000 per person per year and not tradeable. They're a supplement, not a ladder.

Joseph G. Valerio, CFP®, EAFounder and Lead Advisor at Valerio Wealth Management, a fee-only, fiduciary virtual family office in Miami, Florida. One advisor, credentialed in both financial planning and federal tax. About Joseph

This article is general education, not individualized advice, and it is not tax, legal, or accounting advice. Figures reflect federal law for the year stated and can change. Valerio Wealth Management does not prepare or file tax returns. Speak with a qualified professional about your own situation before acting.