Why a 2.8% Social Security COLA Can Still Fall Behind

Each year, the Social Security Administration applies a cost-of-living adjustment to benefits to help recipients keep pace with higher prices. For 2026, that increase was 2.8%, which added about $56 a month to the average retired worker’s check.

Even so, rising expenses have already offset much of that boost for many retirees, largely because of the factors below.

Medicare Part B Premiums Rose Faster Than Benefits

According to the Federal Register, the standard monthly Medicare Part B premium for 2026 is $202.90. That is $17.90 more than the $185 premium in 2025, or an increase of nearly 10%. As a result, Part B premiums absorb about 32% of the entire 2026 COLA, leaving only $38.10 in extra monthly spending power from the $56 increase.

The Part B Deductible Increased Too

The Federal Register also says the annual Part B deductible for 2026 is $283, up $26 from $257 in 2025. This is an out-of-pocket cost paid on top of the monthly premium for people who actually use care. In some situations, even one doctor visit can cost $26 more than it did in 2025, which further reduces the benefit of the Social Security raise.

Inflation Has Run Ahead of the COLA

In the 12 months ending in July 2026, the Consumer Price Index for All Urban Consumers rose 3.4%, according to the Bureau of Labor Statistics. That is higher than the 2.8% COLA retirees received starting in January.

One reason for the gap is timing. The COLA is calculated using third-quarter data from the prior year, well before the adjusted payments are issued. By the time retirees receive those checks, inflation may be running higher than the COLA rate because the adjustment is based on figures that are already several months old.

Retirees are especially exposed to shelter costs, including rent and homeownership expenses. As of July 2026, the BLS said those costs had risen 3.2%, which is also above the 2.8% adjustment. For seniors relying on Social Security to ease housing costs, the effect has been the opposite.

The Formula Uses a Different Inflation Measure

The Social Security Administration says the CPI-W reflects the spending patterns of working-age wage earners and clerical workers. That group can spend very differently from retirees, who are more heavily affected by housing, healthcare, and long-term care costs. In other words, the measure used to set the increase is not built around the spending habits of the people who receive it.

For instance, BLS data show that households age 75 and older direct 16% of total spending to healthcare, compared with just 3.8% for households under 25. Because the CPI-W leans toward a younger population, it tends to give less weight to healthcare than older adults typically need. That can create a mismatch between the COLA and the rising costs seniors face.

The Senior Citizens League expects the next COLA to be 3.6% when it is announced later in the year. That estimate could change, but it would still mark an increase from the 2.8% retirees received in 2026. Whether it will be enough to cover rising living costs for seniors will depend on how prices move before then.