A pension check that never changes looks dependable on the calendar. At the checkout, it tells a different story. When a monthly payment stays frozen while eggs, prescription co-pays and heating oil creep upward, the check buys less each year. The deposit is the same. What it covers is not.
Why a fixed payment loses real value
A fixed monthly annuity sheds real value over time because corporate defined-benefit pensions usually are not adjusted for inflation. The Center for Retirement Research at Boston College (CRR) makes this point plainly. Prices climb a few percent a year, the deposit stays put, and the gap widens quietly. Over a retirement of twenty or thirty years, a comfortable budget can turn into a tight one.
Public pensions offer only partial shelter. According to CRR, the pensions of retired state and local government workers are only partly protected. Plans differ from place to place, so a retiree has to read the rules that apply to their own plan. CRR gives a simple example: a $2,000 monthly annuity will be worth much less in 20 years if it is never adjusted for inflation.
Social Security works differently. It is adjusted automatically each year, which is why it cushions retirees more than a flat pension does.
What recent inflation looked like
The years after 2020 showed how fast a fixed income can fall behind. CRR reports that U.S. inflation peaked at 8.9 percent in June 2022. In the year before July 2024, it ran about 3 percent. That was cooler, but still above the pre-pandemic level near 2 percent. The sources reviewed for this piece do not include later figures, so readers should check the latest Bureau of Labor Statistics release for the current rate.
A slower rate does not undo earlier increases. Prices that have risen stay risen. A retiree who saw the 2022 jump has a higher grocery bill today, even if the monthly rate of change has eased.
The split between indexed and unindexed income showed up in 2023. CRR notes that Social Security checks rose 8.7 percent that year to counter the 2022 surge. A flat corporate pension got no such bump. One household's income moved with the grocery bill. The other's did not.
How big the loss can get
The damage can be modeled across a whole retirement. CRR cites a RAND model in which a permanent rise in inflation from 2 percent to 6 percent erodes a single college graduate's annuity value by about $18,000 over retirement. That works out to about $600 in purchasing power. Inflation acts like a small, recurring withdrawal that nobody authorizes.
For married college-educated couples, the same model shows a larger hit. The real value of their annuity payments falls by more than $67,000. A second life in the household means more years of exposure.
Retirees also fare worse than people near retirement. A second CRR analysis says that, outside of Social Security, retirees' income is less tied to prices, and they hold less fixed-rate debt. Higher-wealth households are better protected because they hold assets that tend to grow with inflation. Households living mostly on flat payments take the full force of rising prices.
Other pieces of the balance sheet
A pension check sits alongside everything else a household owns and owes. CRR notes that a fixed mortgage payment does not rise, and home values tend to rise with inflation. A retiree with a fixed-rate loan repays it in dollars that buy less than when the loan began. That helps a little. It does not make up for a pension that never moves.
Investments are a mixed picture. CRR says bonds in retirement accounts can lose value when inflation and interest rates rise. Stock holdings can keep pace with rising prices. The larger the share of income that comes from unindexed payments, the more exposed the household is.
Questions to ask about your own income
The U.S. Department of Labor's Employee Benefits Security Administration (EBSA) has sent Congress a report titled The Impact of Inflation on Retirement Savings. The text of that report could not be read for this article, so its findings are not summarized here. Its title does show that inflation and retirement income are a live policy concern.
The EBSA guide Taking the Mystery Out of Retirement Planning organizes planning around projecting income and expenses over a 30-year retirement. That is a useful frame. A few questions drawn from the sources can start the review:
- Is my pension adjusted for inflation, and if so, how is the adjustment set?
- Does my government pension have full or only partial inflation protection?
- How much of my income comes from Social Security versus fixed payments?
- How much would my spending change if prices rose over the next 10 to 20 years?
The answers will differ from plan to plan. The sources reviewed do not say which plans offer cost-of-living adjustments, so the plan documents are the place to look. This article is general education, not advice for any one household.
