Updated projections suggest the Cost-of-Living Adjustment (COLA) for 2027 Social Security retirement benefits and federal pensions will likely be between 3.0% and 4 percent.
Early estimates show the 2027 Social Security COLA landing somewhere between 3.1% and 3.9%. While the final number won’t be announced until October, these estimates give federal retirees a reliable preview of what next year’s income increase may look like for both Social Security and for your federal pension.
As of the June 2026 inflation release, the running count sits near 3.9%. The Senior Citizens League projects a 3.8% – 3.9% increase, while the Congressional Budget Office estimates closer to 3.1%, but inflation has been on an upward trend. These numbers will shift as more summer inflation data comes in, but they provide a solid planning range for 2027. A 3.9% COLA would be 1.1% higher than the 2026 COLA, which was 2.8% for Social Security and CSRS. There was a 2.0% COLA increase for FERS retirees in 2026, and they would receive 2.9% if the next year’s adjustment is in fact 3.9% for Social Security.
Find out: Should you retire from the government this year?
How the 2027 COLA Is Calculated
The COLA is based on the CPI-W, an inflation index that tracks the cost of everyday goods and services for urban wage earners. Even though inflation reports come out monthly, only three months truly matter for the final COLA calculation: July, August, and September.
Those third quarter numbers determine the official 2027 Social Security COLA, which will be announced in mid-October 2026. Everything before that simply shows the trend.
CSRS vs. FERS: Why Your Pension Increase Is Different
Your retirement system determines how much of the COLA you actually receive. While there are still over 1.5 million people still receiving their federal retirement income from CSRS, there are more FERS retirees exiting service every year as it is the newer system and active employees under CSRS have been hovering around 1% of the federal workforce for the past half decade or so. Unlike annual pay raises, which impact active workers and are equivalent regardless of pension type, the COLA usually differentiates and it only affects retirees and survivor benefits.
CSRS: Full COLA, No Reductions
If you retired under the Civil Service Retirement System (CSRS), your pension receives the full COLA, every year, with no caps or reductions. By full, this means it is equivalent to the Social Security adjustment for that year.
A 3.6% COLA for Social Security means a 3.6% increase to your CSRS annuity. So 3.9% COLA in 2027 would mean a 3.9% increase for CSRS.
FERS COLA Formula and Calculation
FERS retirees do not receive the full COLA when inflation is above 2.0%. Instead, FERS uses a capped formula often called the “diet COLA” or “flat COLA.” Here’s how it works:
- If CSRS pensions get 2% or less, FERS receives the full increase.
- If the increase for CSRS is between 2% and 3%, the FERS adjustment is capped at a flat 2.0%.
- If inflation is 3% or more, the increase equals the full COLA minus 1 percentage point.
This means a projected 3.6% COLA becomes a 2.6% increase for FERS retirees.
And one more key rule: Non-disabled FERS retirees under age 62 generally do not receive any COLA yet. This is one of the biggest differences between the two systems, and a big consideration when trying to determine if you’re on track to retire from your federal agency.
Historical COLA Chart, 2019 – 2026
| Year | Social Security/CSRS | FERS |
| 2019 | 2.8% | 2.0% |
| 2020 | 1.6% | 1.6% |
| 2021 | 1.3% | 1.3% |
| 2022 | 5.9% | 4.9% |
| 2023 | 8.7% | 7.7% |
| 2024 | 3.2% | 2.2% |
| 2025 | 2.5% | 2.0% |
| 2026 | 2.8% | 2.0% |
Social Security COLA for FERS Retirees
While the FERS pension might be subject to a cap, Social Security COLAs for FERS retirees are not. So if the 2027 Social Security COLA comes in at 3.9%, your Social Security benefit increases by the full 3.9%, even if your FERS pension increase is limited to 2.9%.
When Will Official 2027 COLA Be Announced?
You’ll see the official COLA announcement on October 14, 2026. The increase takes effect in December, and you’ll see it reflected in your January 2027 Social Security payment.
Between now and then, there’s no need to stress over monthly inflation reports. You can’t control the numbers, but you can make sure you’re properly secured in retirement. Connect with a specialist today by filling out the following form: