2027 FERS COLA: Explaining 2.6% for FERS, 3.6% CSRS

The 2027 FERS COLA is 2.6%, while annuitants who retired under CSRS will receive 3.6%, according to OPM. The difference comes from the FERS formula, which reduces the adjustment by one percentage point when inflation is above 3%. HR offices can expect questions from employees nearing retirement, and a clear, consistent explanation helps set realistic expectations.

The 2027 numbers at a glance

OPM's cost-of-living adjustments FAQ confirms the CSRS and FERS figures. The Social Security Administration announced a 3.6% COLA for Social Security benefits beginning in January 2027.

For comparison, the previous adjustment was 2.8% for CSRS and 2.0% for FERS, according to the Congressional Research Service's history of civil service COLAs.

How the 2027 FERS COLA is calculated

Both CSRS and FERS COLAs are based on the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W). The increase is measured from the third quarter of one year to the third quarter of the next. From the third quarter of 2025 to the third quarter of 2026, the CPI-W rose 3.6%.

CSRS: the full CPI-W increase

CSRS annuities are adjusted by the full CPI-W increase. With a 3.6% rise, CSRS annuitants receive 3.6%.

FERS: a capped formula

FERS uses a tiered formula:

Because the CPI-W rose 3.6%, which is over 3.0%, the FERS COLA is 3.6% minus 1 point, or 2.6%.

A simple way to explain this to employees: when inflation is low, FERS keeps pace; when inflation is moderate or high, FERS falls behind CSRS. The gap grows from zero to one point as inflation rises from 2% to 3%, and stays at one point once inflation is above 3%.

Who receives the FERS COLA, and when

One of the most common misunderstandings among employees planning to retire is that every retiree receives a COLA immediately. Under FERS, that is not the case.

The age-62 rule

OPM states that FERS COLAs "are not provided until age 62, except for disability, survivor benefits, and other special provision retirements." In practice, this means:

• Most nondisabled FERS retirees under 62 do not receive a COLA until they reach 62.
• Survivors receiving FERS benefits are eligible.
• Special provision retirees, such as law enforcement officers, firefighters and air traffic controllers, are among the exceptions OPM lists.
• FERS disability retirees receive the adjustment, except while their disability annuity is based on 60 percent of their high-3 average salary.

This is important for employees considering an early or MRA+10 retirement. Their annuity will not be adjusted for inflation until they turn 62, unless an exception applies.

CSRS components

Some FERS annuities include a CSRS component, for employees who transferred from CSRS. OPM explains that the CSRS component is subject to the CSRS COLA calculation, so part of the annuity may increase by 3.6% and part by 2.6%.

New retirees receive a prorated COLA

Employees who retired during the past year should not expect the full percentage. OPM says those annuitants receive a prorated amount and will receive a letter explaining the increase.

Children and survivors

OPM confirms that children, students up to age 22, and survivors receiving monthly benefits are eligible for the cost-of-living increase.

Timing: when the increase shows up

According to OPM, COLAs are effective December 1 each year. The adjustment appears in the payment on the first business day of January, which is the payment for December. OPM's FAQ on when the COLA is paid explains the schedule.

Retirees who also receive Social Security will see that increase separately. SSA says its COLA applies beginning in January 2027.

How HR offices can explain the COLA

Many retirement-eligible employees ask HR about the COLA when deciding when to retire. HR staff should not give individual financial advice, but they can give accurate general information.

Talking points for employees

1. The FERS COLA for 2027 is 2.6%. The CSRS COLA is 3.6%.
2. The FERS formula is set by law. It is not a decision by OPM or your agency.
3. Most FERS retirees under 62 don't receive a COLA. Exceptions include disability, survivor and special provision retirements.
4. New retirees receive a prorated amount in their first year.
5. Increases appear in the January payment.

Common misconceptions to correct

• "Everyone gets the same COLA." CSRS and FERS use different formulas, and the 2027 rates are 3.6% and 2.6%.
• "My COLA starts the month after I retire." Most nondisabled FERS retirees don't receive a COLA until age 62, and new retirees receive a prorated amount in their first year.
• "The COLA shows up in December." The COLA is effective December 1, but it appears in the payment made on the first business day of January.
• "My Social Security and annuity increase together." They are separate programs. For 2027, the Social Security COLA is 3.6%, while the FERS annuity COLA is 2.6%.

Sample language for HR messages

HR offices can adapt this text for retirement newsletters or pre-retirement briefings:

For 2027, OPM will increase CSRS annuities by 3.6% and FERS annuities by 2.6%. The increase is effective December 1, 2026, and appears in the payment on the first business day of January 2027. Most FERS retirees under age 62 do not receive a COLA, with exceptions for disability, survivor and special provision retirements. Retirees who retired during the past year receive a prorated amount. For details, see OPM's cost-of-living adjustment FAQ.

An illustration, not a prediction

A hypothetical example can make the difference clear. Suppose a FERS retiree age 62 or older receives a $2,000 monthly annuity. A 2.6% COLA would raise it by $52 a month. A CSRS annuitant receiving $2,000 would see a 3.6% increase of $72 a month. Actual amounts depend on each person's annuity, deductions and eligibility, so employees should rely on their own OPM notices.

Connect the COLA to retirement planning

The COLA question often opens a larger conversation about retirement income. Employees who understand that the FERS annuity may lose purchasing power over time are more likely to pay attention to their Thrift Savings Plan and Social Security planning. This is a good opportunity to recommend retirement education.

Questions about retirement timing

Some employees ask whether they should time their retirement around the COLA. HR offices should explain the rules and let employees decide with their own advisers. Useful facts to share include that the COLA is effective December 1, that first-year retirees receive a prorated amount, and that most nondisabled FERS retirees under 62 receive no COLA at all. Employees should also consider factors that have nothing to do with the COLA, such as their high-3 salary, unused sick leave, leave payouts, health coverage and TSP plans. A COLA of a few percent is only one part of a retirement decision that affects decades of income.

Where to point employees

• OPM's cost-of-living adjustments FAQ for the official 2027 rates and eligibility rules.
• SSA for Social Security COLA information.
• Your agency's retirement specialists for questions about service history and retirement estimates.

FEBA's agency briefings cover CSRS, FERS, the TSP and Social Security coordination in plain English, including how inflation adjustments affect retirement income. Employees can find more on our federal employee resources page and through the Ask Dr. FedEd financial wellness program. Agencies interested in a virtual session can review Understanding Your Federal Benefits (Virtual) or contact us to plan a briefing.

A note on proposed changes

The Congressional Research Service notes that legislation has been introduced to make the FERS COLA calculation the same as the CSRS calculation. Bills like this may or may not advance. Until the law changes, HR offices should describe the current formula and avoid predicting future changes.

Questions

What is the 2027 COLA for federal retirees?

According to OPM, annuitants who retired under CSRS will receive a 3.6 percent increase and those who retired under FERS will receive a 2.6 percent increase for 2027.

Why is the FERS COLA lower than the CSRS COLA?

FERS uses a different formula. When the CPI-W rises more than 3 percent, the FERS COLA equals the CPI-W increase minus 1 percentage point. The CPI-W rose 3.6 percent, so FERS retirees receive 2.6 percent.

When will retirees see the 2027 COLA?

COLAs are effective December 1 and appear in the payment made on the first business day of January, which is the payment for December.

Do FERS retirees under age 62 get a COLA?

Generally no. OPM states that FERS COLAs are not provided until age 62, except for disability, survivor and other special provision retirements.

Will someone who retired during 2026 receive the full COLA?

No. OPM says retirees who retired in the last year receive a prorated amount, and OPM sends a letter explaining the increase.

Federal Employee Benefits Advocates is an independent educational organization. This article is not a government publication and is not official guidance from OPM or any federal agency.

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