Federal employees get Social Security when they are covered by FERS, not the older CSRS. That single distinction decides the whole answer.
Key Takeaways
- FERS (Federal Employees Retirement System) workers pay the standard 6.2% Social Security payroll tax and earn Social Security benefits like most private-sector workers (Source: SSA).
- CSRS (Civil Service Retirement System) workers generally pay no Social Security tax on their federal wages and do not earn Social Security credits from that work, though they do pay the 1.45% Medicare tax (Source: OPM, SSA).
- Nearly all employees hired after December 31, 1983 are covered by FERS or CSRS Offset, so almost every current federal worker is now in Social Security (Source: OPM).
- The Social Security Fairness Act, signed January 5, 2025, eliminated the Windfall Elimination Provision (WEP) and Government Pension Offset (GPO) for benefits payable January 2024 and later (Source: SSA, Congress.gov).
- SSA reported sending more than 3.1 million retroactive payments totaling about $17 billion to people affected by the WEP and GPO repeal (Source: SSA).
- FERS is a three-legged stool: a Basic Benefit pension, the Thrift Savings Plan (TSP), and Social Security (Source: OPM).
- The FERS Special Retirement Supplement can bridge income for eligible retirees who leave before age 62, and it ends the month they turn 62 (Source: OPM).
Federal Employees and Social Security: Key Figures
Figures reflect 2026 values and current federal law as of September 2026. The Social Security wage base and earnings test limit are adjusted annually by SSA.
Do federal employees get Social Security?
Most federal employees do get Social Security, but it depends on which retirement system covers them. Workers under FERS pay into Social Security and earn benefits, while workers under the older CSRS generally do not earn Social Security from their federal service.
The dividing line is the hire date. The Social Security laws were changed in 1983 to require Social Security coverage for most federal employees hired after December 31, 1983, and FERS took effect on January 1, 1987. Because CSRS was closed to new entrants decades ago, nearly every person hired in recent decades is a FERS employee inside Social Security. You can review the mechanics of the newer system in our guide to FERS retirement explained. For what took effect this year, see federal retirement changes in 2026.
What is the difference between FERS and CSRS?
FERS and CSRS are two separate federal retirement systems with opposite Social Security treatment. FERS combines a smaller pension with Social Security and the TSP, while CSRS pays a larger stand-alone pension and sits outside Social Security. The narrow cases in which a FERS annuity can be forfeited are covered in whether a federal employee can lose their pension.
Talk With Craig Wear's Team
Craig has helped IRA millionaires save over $1 million each in unnecessary taxes. Find out if a Roth conversion strategy fits your retirement, with no sales pressure and no product pitch.
Under FERS, the government withholds the 6.2% Social Security (OASDI) tax from pay up to the annual Social Security wage base, so a FERS career builds a normal Social Security earnings record. Traditional CSRS employees pay a civil service retirement deduction instead of Social Security tax, which is why their federal work does not add Social Security credits.
| Feature | FERS | CSRS |
|---|---|---|
| Typical coverage | Hired 1984 or later (or switched to FERS) | Generally hired before 1984 |
| Social Security coverage | Yes, full participation | No, for standard CSRS federal work |
| Social Security (OASDI) payroll tax | 6.2% up to the wage base | Generally none on federal wages |
| Medicare tax | 1.45% | 1.45% |
| Employer pension | Smaller Basic Benefit annuity | Larger stand-alone annuity |
| Thrift Savings Plan (TSP) | Automatic and matching contributions | Available, no agency match |
| Historic WEP or GPO exposure | Low, because covered by Social Security | Higher, now repealed |
| FERS Special Retirement Supplement | Available to eligible early retirees | Not applicable |
How does the FERS three-legged stool work?
FERS retirement income rests on three parts working together: the Basic Benefit pension, the TSP, and Social Security. OPM designed the pension to be modest precisely because Social Security and the TSP carry the rest of the load.
The first leg is the Basic Benefit, a defined benefit annuity from OPM based on years of service and high-3 average salary. The second leg is the TSP, the federal version of a 401(k) that includes agency automatic and matching contributions. The third leg is Social Security, which pays a benefit calculated from lifetime covered earnings the same way it is for private workers, as described in how Social Security is calculated.
What was the WEP and GPO, and what changed in 2025?
The Windfall Elimination Provision and Government Pension Offset were rules that reduced Social Security benefits for people who also received a pension from work not covered by Social Security, such as traditional CSRS service. Both rules were repealed by the Social Security Fairness Act.
WEP reduced a worker’s own Social Security retirement benefit, while GPO reduced Social Security spousal and survivor benefits. The Social Security Fairness Act was signed into law on January 5, 2025, and it eliminated both provisions for benefits payable for January 2024 and later. SSA reported completing more than 3.1 million retroactive payments totaling roughly $17 billion to affected beneficiaries. This mostly helps CSRS retirees and their families, along with certain state and local public servants outside Social Security.
Do CSRS employees get any Social Security at all?
Some CSRS employees do qualify for a Social Security benefit, but not from their CSRS-covered federal work. They can earn benefits through other jobs or a second career that were covered by Social Security.
A CSRS worker who also spent years in private-sector or military employment, or in a side job that paid Social Security tax, can accumulate the 40 credits needed to qualify. Before 2025, WEP could reduce that benefit. With WEP repealed, those benefits are now calculated under the standard formula. CSRS Offset employees, a hybrid group, do pay Social Security tax and coordinate the two systems differently.
What is the FERS Special Retirement Supplement?
The FERS Special Retirement Supplement is a temporary payment from OPM that approximates the Social Security benefit an eligible early retiree earned during FERS service. It bridges the income gap between retirement and age 62, when Social Security first becomes available. Employees who leave service because of a medical condition follow different rules, covered in how FERS disability retirement works. Officers covered by special retirement provisions follow their own eligibility rules, explained in how federal law enforcement retirement works.
According to OPM, the supplement is generally paid to employees who retire on an immediate, unreduced annuity before age 62, such as those retiring at their Minimum Retirement Age with 30 years of service or at age 60 with 20 years. The payment stops the month the retiree turns 62, whether or not they file for Social Security. The supplement is also subject to the Social Security earnings test, so wages above the 2026 limit of $24,480 can reduce it.
When should federal retirees claim Social Security?
There is no single right age, because claiming age changes the monthly amount for life. Benefits can start as early as 62, reach the full amount at full retirement age, and grow with delayed retirement credits until 70.
For FERS retirees, the supplement already covers part of the pre-62 window, so many weigh whether to file at 62 or let the benefit grow. Our overview of full retirement age and the timing tradeoffs in when to take Social Security lay out the mechanics. A financial professional can model how claiming age interacts with a FERS pension and TSP withdrawals.
How do federal benefits affect taxes in retirement?
Federal retirement income is largely taxable, and how the pieces stack can determine how much of a Social Security benefit is taxed. A FERS pension and traditional TSP withdrawals are generally taxed as ordinary income, and they raise the provisional income figure that governs Social Security taxation.
Under the fixed thresholds set by law, up to 85% of Social Security can be taxable once provisional income rises above $34,000 for single filers or $44,000 for married couples filing jointly. Because a pension is taxed as ordinary income and traditional TSP dollars are too, retirees who want more control sometimes study tax diversification. Retirees in a lower-bracket year, such as an early-retirement gap before Social Security starts, often consider whether partial Roth conversions fit their situation. See our detail on the taxation of Social Security benefits for the current thresholds.
Frequently asked questions
Do all federal employees pay into Social Security?
No. FERS employees pay the 6.2% Social Security payroll tax and earn benefits. Traditional CSRS employees generally do not pay Social Security tax on their federal wages, though they still pay the 1.45% Medicare tax. Nearly all employees hired after December 31, 1983 are covered by Social Security.
Why do CSRS employees not get Social Security from federal work?
CSRS predates the 1983 law that brought federal workers into Social Security. Traditional CSRS employees pay into the civil service annuity instead of Social Security, so their federal service does not add Social Security credits. They can still qualify through other covered employment.
Did the Social Security Fairness Act help federal retirees?
Yes, mainly CSRS retirees and their families. Signed January 5, 2025, it repealed the Windfall Elimination Provision and Government Pension Offset for benefits payable January 2024 and later, removing reductions that had cut the Social Security and spousal or survivor benefits of many public servants.
When does the FERS Special Retirement Supplement stop?
The supplement ends the month the retiree turns 62, regardless of whether they file for Social Security at that time. It is also reduced by the Social Security earnings test if the retiree earns wages above the annual limit, which is $24,480 in 2026.
Can I receive both a FERS pension and Social Security?
Yes. FERS was built so that a retiree receives the Basic Benefit pension, TSP savings, and Social Security together. Because FERS work is covered by Social Security, there is no offset for the FERS pension itself.
How much Social Security tax do FERS employees pay?
FERS employees pay the standard 6.2% Social Security (OASDI) tax on wages up to the annual Social Security wage base, the same rate as private-sector workers, plus the 1.45% Medicare tax.
Does a FERS pension reduce my Social Security benefit?
No. Because FERS employment is covered by Social Security, the FERS pension does not trigger the old WEP or GPO reductions. Those provisions applied to non-covered pensions such as traditional CSRS, and both were repealed in 2025.
What happens to Social Security if I switch from CSRS to FERS?
Employees who transferred to FERS gained Social Security coverage from the transfer date forward and began paying the 6.2% tax. Their earlier CSRS-covered service still follows CSRS rules, which is why some retirees have a mixed record.
Methodology note: This article draws only on primary sources: the Social Security Administration (SSA.gov), the Office of Personnel Management (OPM.gov), and federal law as recorded on Congress.gov. Figures reflect 2026 values and current law as of September 2026. Because federal retirement and Social Security are money and health topics, anonymous forum anecdotes were excluded. Annual figures such as the wage base and earnings test limit change each year.
Primary sources
- SSA: Social Security Fairness Act (WEP and GPO update)
- Congress.gov: H.R. 82, Social Security Fairness Act
- OPM: FERS Information
- OPM: CSRS Information
- OPM: Types of Retirement (Special Retirement Supplement)
- SSA: 2026 Cost-of-Living Adjustment Fact Sheet (earnings test limits)
- SSA: Income Taxes and Your Social Security Benefit
This article is for educational purposes only and is not individualized investment, tax, or legal advice. Consult a qualified professional about your specific situation.
