Every generation has stories about how inexpensive things used to be. A gallon of milk, a tank of gas, a movie ticket, or the first home someone bought decades ago all seem impossibly cheap by today’s standards. A dollar simply does not buy what it used to. That may seem like little more than an interesting observation when you’re talking about the past, but it becomes a very real planning challenge once you stop earning a paycheck. Throughout retirement, your portfolio is responsible for generating the income needed to pay tomorrow’s grocery bills, utility bills, insurance premiums, and healthcare expenses. To accomplish that, it must preserve the purchasing power of those dollars. Inflation rarely announces itself with a single dramatic event. Instead, it gradually shows up in everyday life in the form of more expensive bills and higher prices for goods and services.
That is why inflation protection is such an important part of a retirement income plan. The challenge is that protecting yourself from inflation is not free. Every strategy designed to preserve purchasing power asks you to give something up in return. The goal is not to eliminate inflation risk at any cost but to understand the tradeoffs and choose the combination of tools that best supports your retirement, which is exactly what our Managing Inflation In Your Retirement Income Plan workshop walks through in detail.
Paying for Certainty
The closest thing investors have to direct inflation protection is Treasury Inflation-Protected Securities, better known as TIPS. Unlike traditional Treasury bonds, the principal value of a TIPS bond increases with inflation and decreases with deflation. If you purchase an individual TIPS and hold it until maturity, you are essentially locking in a real rate of return. Whatever inflation turns out to be over that period, your purchasing power should remain largely intact.
That level of certainty comes at a price. Because investors are willing to pay for inflation protection, TIPS may offer lower real yields than traditional Treasury bonds when inflation ultimately turns out to be lower than the market expected. Their market prices can also fluctuate as interest rates change, even though an investor who holds an individual TIPS to maturity still receives the inflation protection built into the bond. In taxable accounts, the annual inflation adjustment to principal is taxable even though you do not receive that additional principal until the bond matures. For these reasons, TIPS are often best suited for tax-deferred retirement accounts or for assets specifically designated to fund future spending.
The key benefit of TIPS is not that they produce the highest return. It is that they provide one of the most reliable ways to preserve purchasing power and ensure that future dollars will buy roughly what you expect them to buy today.
When Flexibility Matters More
Not every retiree wants to lock money away for years at a time. Short-term Treasury bills and notes offer a different kind of protection. Because they mature quickly, investors can continually reinvest at current interest rates. When inflation pushes rates higher, new Treasury securities are issued with higher yields.
The tradeoff is that future income becomes uncertain. If inflation declines and interest rates eventually fall, those same securities mature and must be reinvested at lower yields. Instead of locking in purchasing power, investors are relying on whatever interest rates happen to be available at the time. Short-term Treasuries reduce interest rate risk and provide excellent liquidity, but they exchange certainty for flexibility.
The Tax Advantage That Comes with Limits
Investors often compare I Bonds with TIPS, but they solve a slightly different problem. Series I Savings Bonds occupy a unique place among inflation-protected investments. Like TIPS, their returns adjust with inflation, but unlike TIPS, they are not subject to market price fluctuations. Their value only moves in one direction. They also receive favorable tax treatment. Interest is exempt from state and local income taxes, and federal tax can generally be deferred until the bonds are redeemed. For investors holding assets outside retirement accounts, that can be a meaningful advantage.
The limitation is scale. Annual purchase limits prevent I Bonds from serving as the primary inflation hedge for larger portfolios. Investors also cannot redeem them during the first year, and redemptions during the first five years result in the loss of three months of interest. For retirees building reserves over time, I Bonds can be an excellent complement to a broader inflation strategy, but they rarely solve the entire problem by themselves.
Why Bond Funds Are Different
Bond funds are sometimes assumed to provide inflation protection because they eventually replace older bonds with newly issued securities paying higher interest rates. When inflation causes interest rates to rise, existing bonds lose value. Bond funds immediately reflect those declines because they continuously hold bonds with varying maturities. While future income gradually improves as higher-yielding bonds enter the portfolio, investors who need to sell shares during that transition may experience losses.
Bond funds remain an important source of diversification and income, but they should not be viewed as investments designed to preserve purchasing power in the same way as individual TIPS. Investors with long time horizons often recover those price declines through higher future income, but retirees making ongoing withdrawals may not have the luxury of waiting.
The Opportunity Cost of Playing It Safe
Cash feels safe because its value never declines on a statement. For spending needs over the next several months or even the next year, cash is often exactly where the money belongs. The problem appears when cash becomes a long-term inflation strategy.
Interest earned on savings accounts and money market funds tends to follow short-term interest rates. As those rates eventually decline, inflation often continues. The result is a gradual erosion of purchasing power that may not be obvious until years later. Cash protects liquidity exceptionally well, but it does little to preserve purchasing power over long periods.
Every Choice Solves a Different Problem
Consider three retirees who each set aside $300,000 to cover spending over the next decade. Their goal is to preserve enough purchasing power so the money will fund their planned expenses when they need it. The difference lies in how they choose to get there.
The first retiree purchases individual TIPS with maturities that align with future withdrawals. The second builds a ladder of short-term Treasury securities, preferring the flexibility of reinvesting as each one matures. The third keeps the money in cash, knowing it will always be available without worrying about market fluctuations.
Now assume inflation averages 4 percent over the next several years. The retiree who purchased TIPS has confidence that those dollars should retain their purchasing power because the principal adjusts with inflation. The retiree using Treasury securities benefits from higher interest rates at first, but that advantage depends on what rates look like each time the securities mature. If rates fall, future income falls as well. Meanwhile, the retiree who stayed in cash enjoys complete liquidity throughout the entire period, but slowly realizes that the same withdrawal buys fewer groceries, pays fewer bills, and covers less of the expenses it was originally intended to fund.
None of the three made a bad decision. Each simply chose to protect against a different risk. The TIPS investor placed the highest value on preserving purchasing power. The Treasury investor valued flexibility. The retiree holding cash prioritized immediate access to the money. Understanding those tradeoffs is far more important than identifying a single “best” inflation hedge because the right choice depends on what role those dollars are expected to play in the overall retirement plan.
The Right Tradeoff for Your Plan
Inflation is a spending risk. Every year that prices rise, your retirement income must work a little harder to pay for the same groceries, utility bills, insurance premiums, healthcare expenses, and everything else that makes up your lifestyle.
There is no perfect inflation hedge because every form of protection asks you to make a tradeoff. TIPS provide a high degree of certainty but come with tax considerations and lower expected returns than traditional Treasuries if inflation is lower than anticipated. Short-term Treasuries offer flexibility but leave future income dependent on prevailing interest rates. I Bonds provide valuable tax benefits, though purchase limits reduce their usefulness for larger portfolios. Bond funds add diversification but are not designed to guarantee purchasing power, while cash provides immediate liquidity at the expense of long-term purchasing power.
One important source of inflation protection doesn’t require buying an investment at all. Social Security benefits receive annual cost-of-living adjustments tied to inflation, making them one of the few sources of lifetime income that automatically adjusts as prices rise. While those adjustments may not perfectly match every retiree’s personal inflation experience, they help preserve purchasing power over time and are an important reason Social Security often serves as the foundation of a retirement income plan.
Stocks also deserve a place in the conversation. While they can be volatile over shorter periods, growing corporate earnings and dividends have historically helped equities outpace inflation over the long run, making them an important source of purchasing power for assets that won’t be spent for many years.
Instead of searching for a single investment that solves every problem, think about the role each dollar is expected to play in your retirement plan. Money you’ll spend next year has very different needs than money you may not touch for another twenty years. Matching the right tool to each objective allows you to preserve purchasing power without giving up more liquidity, flexibility, or return than necessary.
Inflation is not measured by the return on your portfolio. It is measured by what your portfolio allows you to buy. The true measure of a successful retirement plan is not how much your investments grow, but whether they continue to fund the life you want to live, even as tomorrow’s price tags become yesterday’s bargains.
Want to learn more? Listen to Episode 240 of the Retire With Style Podcast.
