Social Security recipients won’t know the exact size of their 2027 benefit increase until the government calculates and announces next year’s cost-of-living adjustment.
However, beneficiaries can estimate how much more they could receive by combining their current monthly payment with any projected COLA percentage. Once the official adjustment is confirmed, the same calculation will provide a much more reliable estimate of their new benefit.
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The latest confirmed COLA is 2.8 percent, which increased Social Security benefits beginning with payments issued in January 2026. The 2027 adjustment hasn’t yet been finalized because the calculation requires inflation data from the third quarter of 2026.
That means any figure circulating before all the necessary data is available remains an estimate rather than a guaranteed increase.
How to estimate your Social Security COLA increase
Start by finding your current gross monthly Social Security benefit. This is the amount before deductions such as Medicare premiums.
Multiply that figure by the expected COLA percentage written as a decimal. A projected 3 percent adjustment, for example, would be entered as 0.03.
Someone receiving $1,800 per month would calculate: $1,800 × 0.03 = $54
The estimated monthly benefit after a 3 percent increase would therefore be $1,854. Over 12 months, that would represent an additional $648 before any changes to deductions.
A recipient receiving $2,500 per month would gain an estimated $75 monthly under the same hypothetical 3 percent adjustment, bringing the gross payment to approximately $2,575.
A pay raise calculator can perform the same basic calculation. Users can enter their current annual or monthly amount and the percentage increase to see the new total and the difference. The underlying formula multiplies the existing amount by one plus the percentage increase.
When will the official 2027 increase be known?
Social Security COLAs are tied to the Consumer Price Index for Urban Wage Earners and Clerical Workers, commonly known as the CPI-W.
The government compares the average CPI-W for July, August and September with the average from the third quarter of the last year in which a COLA took effect. Any increase is converted into a percentage and rounded to the nearest tenth of 1 percent.
Because September’s inflation data is required, the official adjustment can’t be calculated accurately during the summer.
Recipients should also remember that the COLA applies to their gross Social Security benefit. The amount reaching their bank account may rise by less if Medicare premiums or other deductions increase.
The easiest way to prepare is to locate the current gross benefit, test several possible COLA percentages and wait for the official announcement before treating any estimate as final.
