Social Security's 2027 COLA Is 3.6%: What It Means for Your Check

Social Security benefits rise 3.6% in 2027. The Social Security Administration announced the cost-of-living adjustment on October 14, 2026. Retirees, survivors and disability beneficiaries see it in their January 2027 payment, and Supplemental Security Income recipients see it starting December 31, 2026. As of October 21, 2026, that is the confirmed figure.

A 3.6% raise is bigger than last year's 2.8%, and it is the largest COLA since the 8.7% increase for 2023. Whether it feels like a raise depends on two things: how much your own costs have climbed, and what happens to your Medicare premium.

How much will my check go up?#

Multiply your current monthly benefit, before any deductions, by 1.036. The result is your new gross benefit, which the SSA then rounds down to the next lower dollar.

These are illustrations of the arithmetic, not your personal figures. Your exact amount appears in your COLA notice.

When does the higher amount arrive?#

Your payment day does not change. People who claimed before May 1997, or who receive both Social Security and SSI, are paid on the 3rd. Everyone else is paid on the second, third or fourth Wednesday of the month, depending on their birth date.

How the 3.6% figure was set#

The COLA is not a policy decision made each year. The law ties it to an inflation index, the Consumer Price Index for Urban Wage Earners and Clerical Workers, or CPI-W, published by the Bureau of Labor Statistics.

1. Take the average CPI-W for July, August and September of this year.
2. Compare it with the average for the same three months last year.
3. The percentage change, rounded to the nearest tenth, is the COLA.

That is why the announcement always lands in mid-October: it waits for the September inflation data.

What can eat into the raise#

Medicare Part B premiums#

If you are on Medicare, the Part B premium is usually taken straight out of your Social Security payment. When the premium rises in the same year as the COLA, part of the raise goes to Medicare before it reaches your bank account. The official 2027 Part B premium had not been announced as of October 21, 2026. The Medicare trustees' projection points to an increase, so expect the deposit to rise by a little less than the headline 3.6%.

A "hold harmless" rule protects many people: for most beneficiaries whose premium is deducted from their check, the dollar increase in the Part B premium cannot be larger than the dollar increase in their Social Security benefit. It does not apply to everyone, including higher earners who pay income-related surcharges and people newly enrolled in Medicare.

Income tax on benefits#

Up to 85% of benefits can be taxable at the federal level once your combined income passes certain thresholds, and those thresholds are not adjusted for inflation. A COLA can therefore pull a slightly larger share of benefits into tax. If you have federal tax withheld, the withholding rises along with the benefit.

Means-tested benefits#

Programs such as Medicaid, SNAP or housing assistance look at income. A higher Social Security payment can change eligibility or the amount of help. If you rely on one of them, check with the agency once your new amount is known.

Federal retirees get a different number#

Civil Service Retirement System annuities generally receive the full COLA. Federal Employees Retirement System annuities follow a different formula that gives less when inflation is above 2%, so FERS retirees see a smaller adjustment than the headline Social Security figure. Check the Office of Personnel Management notice for your annuity.

Your COLA checklist#

• Log in to my Social Security in December to see your notice, and confirm your mailing address while you are there.
• Check your Medicare plan during open enrollment, which runs until December 7, 2026. A plan change can matter more to your budget than the COLA.
• Review tax withholding if your benefits are taxable, so you are not surprised in April.
• Update your budget with the net deposit, not the gross figure, once you know the 2027 Part B premium.
• Tell any means-tested program about the new amount if they ask.

2027 COLA in short#

The 3.6% increase is confirmed and arrives in January for Social Security, December 31 for SSI. Estimate your new gross benefit by multiplying by 1.036, then expect a smaller net rise if your Medicare premium goes up. For the parts of Medicare that drive those premiums, see Medicare Parts A, B, C and D explained, and for how much you need saved alongside Social Security, see retirement savings by age.