Bonds Do Not Get Safer as You Age — The Math That Most Advisors Won't Show You

March 2, 2025

The advice to shift into bonds as you approach retirement is one of the most widely accepted ideas in financial planning. It is also one of the most structurally flawed. Here is the math that explains why — and what 2022 confirmed.

The Conventional Wisdom

Few ideas in retirement planning are as widely accepted as this one: as you get older, you should shift more of your portfolio into bonds. The logic seems intuitive. Stocks are volatile. Bonds are stable. Retirement is not the time to take chances. Therefore, a responsible investor gradually moves from growth to safety as the timeline shortens.

This advice has been repeated so often, for so long, that it has taken on the weight of fact. It appears in planning software, shapes model portfolios, and guides millions of retirement allocations across the country — including many in Oklahoma City and across Oklahoma.

The premise is flawed. And the flaw becomes most visible precisely when it matters most.

What Bonds Actually Offer

Bonds offer something real: reduced short-term volatility. A bond-heavy portfolio does not swing as dramatically as a stock-heavy one. Quarterly statements are calmer. The experience of holding bonds feels more stable, particularly during periods when equity markets are turbulent.

For an investor with a short time horizon — someone who needs their capital in one or two years — this stability is valuable. It reduces the risk that a poorly timed decline will arrive just before the money is needed.

But retirement is not a short time horizon.

A sixty-five-year-old retiree may have twenty-five or thirty years ahead of them. That is not a period measured in quarters. It is a period measured in decades — decades during which inflation will compound, spending will continue, and the portfolio must do far more than simply avoid loss. It must grow.

The Math of Long Horizons

Over short periods, bonds and stocks are genuinely different risk propositions. Stocks can decline sharply. Bonds typically do not — at least, not as dramatically.

But over long periods, the math inverts. Historically, over rolling twenty-year periods, stocks have outperformed bonds the vast majority of the time. Over thirty-year periods, the outperformance approaches certainty. This is not a marginal difference. The gap in cumulative returns is substantial — often a multiple of the bond-only outcome.

This happens because stocks compound. They participate in economic growth, corporate earnings, and innovation. Bonds do not. Bonds pay interest and return principal. Over short periods, that is enough. Over long periods, it falls behind.

A retiree who shifts heavily into bonds at sixty-five is not reducing risk. They are exchanging one risk for another — trading the volatility they can see for the underperformance they cannot.

What 2022 Confirmed

For years, the stability of bonds was treated as a given. Retirees were told that bonds would anchor their portfolios — providing ballast when equities declined. In 2022, that assumption was tested.

Interest rates rose sharply. Bond prices fell. Portfolios that had been positioned as conservative — heavy in bonds for safety — experienced losses that rivaled or exceeded their equity allocations. The asset class sold as protection became a source of loss.

This was not an anomaly. It was a reminder that bonds carry their own risks — interest rate risk, inflation risk, reinvestment risk — and that those risks do not disappear simply because the asset feels stable. Bonds are not unconditionally safe. They are conditionally stable, and the conditions can change.

The Adaptive Alternative

The solution to sequence risk — the legitimate concern that motivates the shift-to-bonds advice — is not to abandon growth permanently. It is to manage exposure deliberately. A strategy that recognizes when protection matters most and when participation matters most can provide both, without permanently sacrificing either.

This is what a rules-driven fixed income approach like BondPulse™ is designed to do: evaluate interest rate trends, inflation conditions, and credit environments continuously, and adjust bond exposure accordingly. Rather than maintaining constant duration regardless of conditions, it adapts — reducing sensitivity when rates are rising, extending duration when rates are falling, shifting toward credit when conditions support it.

Bonds can serve a role in a retirement portfolio. That role is limited, and it is not the role most retirees have been taught to expect.

Rulicent Investments serves pre-retirees and retirees in Edmond, Oklahoma City, and across the state of Oklahoma. All content is for educational purposes only.