Social Security retirees could be in for a major change to their Social Security benefits in 2027. The upcoming cost-of-living adjustment (COLA) retirees are on track for next year could be the largest in four years, and could be the fourth largest overall in the last 36 years.
While a big raise may seem like great news, though, there is a catch. Here’s what seniors need to know about their projected benefits increase in the coming year, along with a big caveat they should watch out for.
Experts say retirees are on track for a huge raise, and the math checks out
While the official 2027 COLA numbers won’t be released until October, there are plenty of projections from experts about what’s coming. In fact, Mary Johnson, an independent Social Security and Medicare analyst, is estimating that retirees are looking at a 4.2% benefits increase. This is a significant change from earlier this year, when Johnson predicted just a 1.7% increase. The Senior Citizens League, which is a senior advocacy group, is also predicting a 3.9% COLA, up from its earlier 2.8% projections.
There is a solid foundation for these projections. The cost-of-living adjustment is calculated based on year-over-year changes to the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). CPI-W is released monthly by the Bureau of Labor Statistics. While the COLA formula takes into account data from the third quarter of the year, which remains unavailable until October, inflation numbers have already been published for January through April, and here’s what the numbers look like so far for 2025 vs. 2026.
| January | February | March | April | |
| 2025 | 311.172 | 312.46 | 313.25 | 314.243 |
| 2026 | 317.942 | 319.422 | 323.5 | 326.541 |
| Percent Change | 2.18% | 2.23% | 3.27% | 3.91% |
Inflation is clearly trending higher. In fact, it reached the worst level in three years. And there’s every reason to believe that this trend will continue, leading to a COLA that’s significantly above average.
How will the 2027 COLA compare?
If the math and the experts are right, the 3.9% to 4.2% COLA is going to be the biggest raise in four years. Here’s what the Social Security cost-of-living adjustments have looked like in recent years, according to the Social Security Administration.
- 2026: 2.8%
- 2025: 2.5%
- 2024: 3.2%
- 2023: 8.7%
- 2022: 5.9%
And if the 4.2% projection is correct, the 2027 COLA will also be the fourth largest in 36 years, topped only by a 5.8% increase in 2009, and the 5.9% and 8.7% increases in the aftermath of the pandemic.
What’s the catch?

While retirees seem like they’re on track for a huge benefit increase, there’s one big catch: These are early projections and may not pan out.
Inflation is surging right now, and experts anticipate these trends will continue. However, there’s no guarantee that will happen, and none of these current numbers are part of the official COLA calculation. Only the third quarter data matters, so the actual numbers that count are the CPI-W data for July, August, and September.
It is entirely possible that economic conditions will change before then. In fact, a few key events could lead to a major trend reversal, including:
- President Trump changing course on his tariff policy
- A satisfactory resolution to the Iran war that causes oil to become more freely available and affordable
- The Federal Reserve raising interest rates.
While any one of those events alone may not be enough to substantially reverse the inflation trends, a combination of the three could result in the COLA coming in unexpectedly low. Absent that, though, retirees are probably looking at a big benefits bump that gives them far more money in their checks. Of course, they’ll also be coping with high inflation, so they will need to manage the effects of that in their other retirement savings accounts. A financial advisor can help if necessary, as retirees cope with these unusual economic conditions.