Could October’s 2027 Social Security COLA look bigger on paper than the raise retirees actually see after Medicare costs?

2027 Social Security COLA: October is one of the most important months on the Social Security calendar because the program’s major annual figures are set around this time. The 2027 COLA is the headline number, but it is not the only change worth watching. The earnings-test limits and the maximum amount of wages subject to Social Security tax also move with annual formulas.

For 2026, the COLA was 2.8%. The SSA says the program determines several COLA and wage-indexed amounts each October under formulas established by law.

Social Security 2027: October could set the COLA

The biggest October announcement is the 2027 cost-of-living adjustment. Current forecasts have clustered around roughly 3.5% to 3.6%, although the final number depends on September inflation data.


September is therefore the missing piece. The expected Oct. 14 announcement should settle the 2027 figure after that data becomes available. Forecasts remain estimates until the calculation is complete.

A 3.5% COLA would be higher than the 2.8% increase applied in 2026. For someone receiving $2,000 a month, a 3.5% increase would amount to about $70 more per month before other deductions. The actual dollar increase will depend on each person's benefit.

There is another number retirees need to keep in view: Medicare. Part B premiums are generally deducted from Social Security payments. The 2026 standard Part B premium is $202.90, while the 2026 Medicare Trustees report estimated $209.50 for 2027.

The second change is less visible but important for Social Security recipients who continue working before reaching full retirement age.

Receiving Social Security while working is allowed. The issue is how much someone earns. In 2026, a person who remains below full retirement age for the entire year can earn $24,480 before the earnings test applies. Above that amount, SSA withholds $1 in benefits for every $2 of excess earnings.

Those limits are adjusted over time using wage-based formulas. That means the 2027 figures could give some working beneficiaries more room to earn before the test affects their payments.

The 2027 wage cap

The third figure affects workers rather than retirees receiving benefits. Social Security payroll taxes apply only up to an annual taxable maximum. In 2026, that ceiling is $184,500. Employees pay 6.2% on covered wages up to that amount, and employers generally pay another 6.2%.

That creates a clear dividing line for higher earners. Wages above the annual Social Security taxable maximum are not subject to the 6.2% Social Security tax, although Medicare taxes continue without the same wage ceiling.

The 2027 wage cap will be higher if the statutory wage-indexing formula produces an increase. SSA says the taxable maximum changes each year with changes in the national average wage index.