Your Social Security COLA Notice Will Arrive in December. Here's How to Estimate Your 2027 Increase Now.

Key Points

• The Social Security Administration has announced a 3.6% COLA for 2027, marking the largest increase for beneficiaries in four years.

• You can estimate your 2027 gross benefit with a simple formula.

• Your net amount will also depend on 2027 Medicare Part B premiums, which will be announced later in the year.

Social Security beneficiaries are set to receive their largest raise in four years in 2027. The Social Security Administration announced a 3.6% cost-of-living adjustment, or COLA, for next year.

The SSA will mail personalized notices to beneficiaries showing the exact amount of their new monthly payments, but those notices will not arrive until December. That means you could be waiting weeks to learn your new benefit amount, although you can estimate it yourself in less than two minutes.

A simple calculation and an easier online option

If you want to figure out your 2027 Social Security benefit before your personalized notice arrives, the math is straightforward. Multiply your monthly gross benefit before deductions by 1.036. The result will be your new monthly gross benefit for 2027 after the 3.6% COLA is applied.

For instance, the average retiree's gross monthly benefit in the latest SSA statistical snapshot was $2,088.79. Multiply that figure by 1.036 and you get $2,163.99. The monthly increase is $75.20, which equals 3.6% of the average monthly benefit.

Those figures are only averages, however. Your own benefit estimate will likely differ depending on your lifetime earnings and the age at which you claimed Social Security retirement benefits. If you claimed before full retirement age, your monthly benefit would be lower than it otherwise would have been.

You do not need to do the calculation manually to see how the COLA will affect your benefits before the mailed notice arrives. For most beneficiaries, the online my Social Security account will show the personalized notice in advance of the paper version. Log in at SSA.gov and go to the Message Center to view it.

Medicare could change the final amount

Keep in mind that these are gross Social Security amounts, not the actual deposit you will receive in your bank account. The take-home figure cannot yet be calculated because 2027 Medicare premiums have not been finalized, and Medicare Part B premiums are deducted from most beneficiaries' Social Security checks.

The Centers for Medicare and Medicaid Services will announce the 2027 premiums later in the year. For now, retirees have some reason for optimism. The latest Medicare Trustees Report projected that the standard Part B premium would rise by about 3.25%, which is smaller than the Social Security COLA increase and therefore positive news for seniors.