The 2027 COLA will be announced in October 2026, and you'll see the increase in your January 2027 payment

COLA stands for Cost-of-Living Adjustment. It is the annual percentage increase Social Security applies to benefits to account for inflation. The 2027 COLA will be based on inflation data from July, August, and September 2026, and the Social Security Administration will announce the exact percentage in mid-October 2026. Your benefit amount will increase by that percentage starting with your January 2027 payment.

The COLA affects everyone receiving Social Security retirement, disability (SSDI), or survivor benefits. If you receive Supplemental Security Income (SSI), a separate COLA applies to you, though it is usually the same percentage. The increase is automatic — you do not need to do anything to receive it.

The size of the COLA depends entirely on inflation measured by the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). If inflation is low, the COLA is low. If inflation is high, the COLA is high. There is no minimum COLA — if inflation is zero or negative, benefits do not increase that year.

Key Takeaways

  • The 2027 COLA will be announced in October 2026 and takes effect in January 2027 payments.
  • The COLA percentage is determined by inflation data from the third quarter of 2026 and cannot be predicted in advance.
  • The increase applies to your full benefit amount, including any spousal or survivor benefits you receive.
  • You do not need to take any action to receive the COLA — it is applied automatically by Social Security.

How the COLA is calculated and why you cannot know it in advance

The COLA is calculated using the Consumer Price Index for Urban Wage Earners and Clerical Workers, a measure of inflation published monthly by the Bureau of Labor Statistics. Social Security uses the average CPI-W for July, August, and September of the year before the benefit increase. For 2027, that means the July through September 2026 average will determine the percentage.

Because inflation data is not final until after those three months end, the COLA cannot be announced until mid-October 2026. This means anyone claiming to know the 2027 COLA before October 2026 is guessing. Financial websites and news outlets may publish estimates based on inflation trends, but these are projections, not the actual figure.

The CPI-W measures the cost of food, housing, transportation, medical care, and other goods and services. If these costs rise faster than they did in the previous year, the COLA increases. If they rise slower, the COLA decreases. The COLA has ranged from 0% (in 2010 and 2015) to 8.7% (in 2023), depending on inflation that year.

What happens to your benefit amount when the COLA takes effect

Your Primary Insurance Amount (PIA) — the base benefit you earned through your work record — increases by the COLA percentage. If you receive a spousal benefit, a survivor benefit, or a divorced spouse benefit, those amounts increase by the same percentage. If you have already started receiving benefits, the increase appears in your January payment.

If you have not yet started receiving benefits, the COLA is built into your benefit calculation when you claim. The Social Security Administration adjusts the benefit formula each year to account for wage growth and inflation, so your benefit will reflect all COLAs that occurred between when you stopped working and when you claim.

The COLA also affects the earnings test — the limit on how much you can earn while receiving benefits before age 67 without losing benefits. This limit increases each year by the COLA percentage. In 2026, the limit is $23,400 per year (the exact figure varies by year). In 2027, it will increase by whatever the COLA percentage is.

How the 2027 COLA affects your taxes and Medicare premiums

A higher benefit amount may push more of your Social Security income into the taxable range. Social Security benefits become taxable if your combined income (adjusted gross income plus nontaxable interest plus half your Social Security benefits) exceeds $25,000 for a single filer or $32,000 for a married couple filing jointly. The COLA increase could move you over this threshold if you are close to it.

Your Medicare Part B and Part D premiums may also be affected. Most beneficiaries pay the standard premium, which increases each year. However, if your income is above certain thresholds, you pay a higher premium based on your modified adjusted gross income from two years prior. A 2027 COLA will not affect your 2027 premiums (which are based on 2025 income), but it will affect your 2028 and 2029 premiums.

If you receive Supplemental Security Income (SSI), the COLA increase may affect your SSI payment amount. SSI is means-tested, meaning your payment decreases if your other income or resources exceed certain limits. A COLA increase to Social Security benefits counts as income for SSI purposes and may reduce your SSI payment dollar-for-dollar.

Recent COLA history and what it tells you about 2027

The COLA has been volatile in recent years. In 2022, it was 8.7% — the highest in four decades. In 2023, it dropped to 3.2%. In 2024, it was 3.2% again. In 2025, it is 2.5%. These swings reflect the sharp inflation spike in 2021 and 2022, followed by a gradual decline.

The 2027 COLA will depend on whether inflation remains stable, rises, or falls between July and September 2026. If inflation stays near current levels (around 2% to 3% annually), the 2027 COLA will likely be in that range. If inflation accelerates, the COLA will be higher. If inflation slows further, the COLA will be lower. No one can say which will happen.

Historical COLAs show that increases of 2% to 3% are common in normal economic conditions. Increases above 5% are rare and usually follow periods of high inflation. Increases below 1% or zero are also rare but have occurred twice in the past 15 years.

Planning your retirement income around an unknown COLA

Because the 2027 COLA is unknown, you cannot plan your budget around a specific number. Instead, plan around a range. If you are retiring in 2027 or already retired, consider what your benefit would be with a 2% COLA, a 3% COLA, and a 4% COLA. This gives you a realistic picture of your income under different scenarios.

If you are still working and deciding when to claim, remember that the COLA affects your benefit calculation whenever you claim. Delaying your claim past your full retirement age increases your benefit by 8% per year, plus the COLA increases that occur while you wait. This means the longer you delay, the larger your base benefit becomes, and future COLAs explore to that larger amount.

If you are concerned about inflation eroding your purchasing power, remember that Social Security is one of the few income sources that automatically adjusts for inflation. Pensions, annuities, and savings accounts do not. This makes Social Security valuable as a hedge against inflation, even if the COLA in any given year is modest.

Frequently Asked Questions

Can I find out the 2027 COLA before October 2026?

No. The COLA is based on inflation data from July, August, and September 2026, which is not final until after those months end. The Social Security Administration announces the official COLA in mid-October 2026. Any estimate before that date is a projection, not the actual figure.

Will the 2027 COLA be higher or lower than 2026?

That depends on inflation between July and September 2026. If inflation is higher than it was in the same months of 2025, the COLA will be higher. If inflation is lower, the COLA will be lower. Current inflation trends suggest a COLA in the 2% to 3% range is likely, but this is not certain.

Does the COLA explore if I have not started receiving benefits yet?

Yes. When you claim benefits, Social Security adjusts your benefit calculation to include all COLAs that occurred since you stopped working. You do not miss out on past COLAs by delaying your claim.

What if I am receiving both Social Security and SSI?

The COLA increases both your Social Security benefit and your SSI payment. However, because SSI is means-tested, the increase to your Social Security benefit may reduce your SSI payment. Contact Social Security to understand how the COLA will affect your total income.

Does the COLA affect my Medicare premiums in 2027?

Your 2027 Medicare Part B and Part D premiums are based on your 2025 income, so the 2027 COLA does not affect them. However, the COLA will increase your income for 2027, which may affect your 2028 and 2029 premiums if your income crosses certain thresholds.