Inflation Hit a 3-Year High. Your Social Security Raise Won't Cover It.

Four point two percent.

The Bureau of Labor Statistics released May's Consumer Price Index this morning, and the number—forecast by analysts for the past week—confirmed what three-quarters of Americans have already felt in their wallets. Consumer prices rose 4.2% year-over-year. The highest reading since April 2023. Energy prices pushed it higher, driven by oil costs tied to Iran war tensions, with gas averaging $4.16 per gallon at the May peak, according to CBS MoneyWatch. But the monthly figure is the smallest part of the story.

Moody’s Analytics economist Mark Zandi said it plainly this week: inflation has now been above the Federal Reserve’s 2% target for nearly five straight years. “It’s wearing down on the collective psyche.” Inflation driven not by pandemic supply shocks but—as Moody’s analysis put it—by sustained government policy. The machinery that was supposed to bring prices back to normal has not. And if you are within 15 years of retirement, that is not an abstract economic observation. It is a direct number inside your retirement model.

The Social Security Raise You’ll Receive Won’t Beat the Inflation You’re Paying

Social Security’s 2027 cost-of-living adjustment is already being estimated. The Senior Citizens League—the nonpartisan advocacy group that monitors COLA projections—updated its 2027 forecast to 3.9%. For the average retired worker currently collecting $2,081 per month, that works out to roughly $81 more each month starting January 2027.

Here is what that number obscures. Inflation at 4.2% requires a 4.2% raise just to keep purchasing power flat. A 3.9% COLA doesn’t keep pace. That’s true before a single Medicare premium increase is factored in. The gap is already negative: your “raise” is smaller than the erosion—meaning $2,081 in today’s dollars will buy less in 2027 even after the adjustment takes effect. The Senior Citizens League’s executive director Shannon Benton captured it without softening: “As inflation picks back up, life still does not feel affordable.”

The COLA’s measurement adds another layer. The adjustment uses the CPI-W—a wage-earner index calibrated to workers still in the labor force. But the categories seniors rely on most—healthcare, housing, utilities, insurance—are rising faster than headline CPI, and they represent a larger share of retiree budgets than those of workers. A measurement designed for people still earning income is being applied to people who aren’t. Medicare Part B premiums alone consumed roughly 32% of the 2026 COLA before retirees saw a dollar of benefit. The result is a structural annual shortfall. In a year where headline inflation is already 4.2%, a 3.9% COLA is protection that doesn’t protect.

Your $60,000 Doesn’t Stay $60,000

Inflation’s damage to a fixed retirement income is not felt all at once. It arrives every year, compounding. The individual steps are invisible; the destination is not.

Consider a $60,000 annual retirement income—a blended total of Social Security, pension, and 401(k) withdrawals. At 4.2% inflation, the real purchasing power of that $60,000 deteriorates year after year. After 20 years, $60,000 in nominal dollars buys roughly what $26,400 buys today. More than half the real value, gone. At the Fed’s 2% target, that same $60,000 retains purchasing power equivalent to about $40,400 in today’s dollars. The gap between those two outcomes—4.2% inflation versus 2% inflation over a 20-year retirement—is more than $14,000 per year in what your money can actually buy.

Use your own numbers. Enter your actual expected retirement income. Set the timeframe for how long your money needs to last. The calculator shows real purchasing power at year 5, year 10, year 20. The number that matters is the one closest to when you’ll need the money most. Run it now—the calculation takes thirty seconds.

Your Retirement Plan Was Built for a Different Inflation World

The Inflation Calculator shows what happens to money. The Retirement Calculator shows what happens to plans.

Most retirement projections built before 2022 assumed 2% to 2.5% annual inflation. That figure was calibrated to a decade of unusual price stability that ended sharply. If your plan was constructed at that assumption—and most were—the modeled purchasing power, the modeled Social Security income, the modeled safe withdrawal rate are all built for a context that no longer exists. Shifting the inflation assumption from 2% to 4% changes every output downstream.

The Social Security component is where this compounds most insidiously. If the 2027 COLA is 3.9% and inflation runs at 4.2%, Social Security’s real purchasing power declines 0.3% that year. That sounds minor. Compounded over 20 years, a 0.3% annual real decline leaves the average Social Security benefit worth approximately 6% less in real terms than it is today—about $125 per month less in today’s dollars, without a single dollar in nominal terms being cut. What appears on paper as a stable or growing benefit is shrinking in purchasing power, silently.

Open the Retirement Calculator. Change your inflation assumption to 4%. Run your full projection. Then run the same projection at 2% and compare the outputs. What you are looking at is the cost of planning for the wrong environment. If 4% inflation continues for even three or four more years, does your withdrawal strategy survive?

What Most People Get Wrong About the COLA

The cost-of-living adjustment is framed, by its name, as protection. It is not. It is a partial, backward-looking adjustment using a wage-worker index, applied against prior-year data, announced in October for benefits that begin in January. By the time the 2027 COLA takes effect—officially announced October 14, based on July through September CPI-W data—it is already a response to inflation that has already happened. It cannot adjust in advance. And when the inflation it’s responding to was 4.2%, a 3.9% adjustment starts 2027 underwater.

The cognitive trap is that a higher COLA feels like good news. In isolation, 3.9% sounds better than 2026’s 2.8%. But a raise that doesn’t match the rate at which prices are rising is not a raise. It is slower erosion. The distinction between “more nominal dollars” and “more purchasing power” is precisely what inflation steals—and it steals most aggressively from people on fixed incomes who cannot grow their earnings to compensate. Don’t let the nominal dollar gain distort the decision. The strategy that survives inflation is built on what money buys, not on what the statement says.

Over 57% of seniors have skipped medical services or products in the past year due to cost, according to the Senior Citizens League. That number is the COLA math expressed in human decisions.

You Have Numbers Now. Use Them.

The retirement plan that said you would be comfortable was built on 2% inflation, on COLA adjustments that kept pace, on assumptions about what Social Security would actually buy. Each of those assumptions has been revised downward by five years of above-target inflation and a COLA mechanism that consistently runs behind actual costs.

There is no benefit to waiting. Open the Inflation Calculator, enter your retirement income, set the rate to 4.2%, and see what your purchasing power looks like at the years that matter to you. Then take the scenario that concerns you most into the Retirement Calculator, update the inflation assumption, and find out whether your plan holds.

Social Security’s 2027 raise is projected at 3.9%. Inflation is running at 4.2%. The math doesn’t wait for October’s official announcement. It starts today.