Government Retirement Age: FERS, CSRS, and Social Security Rules

The government retirement age you’re looking for depends on which system applies to you. Federal employees under the Federal Employees Retirement System (FERS) can retire as early as 55 to 57 depending on birth year, while Social Security’s full retirement age falls between 65 and 67. Some federal jobs also carry a mandatory retirement age that pushes workers out whether they’re ready or not. The age you actually pick, within whatever your program allows, permanently sets how much you receive each month.

The Earliest a Federal Employee Can Retire Under FERS

FERS uses a Minimum Retirement Age (MRA) that slides based on when you were born:1Office of the Law Revision Counsel. 5 USC 8412 – Immediate Retirement

  • Born before 1948: age 55
  • Born 1948–1952: age 55 plus two months for each year after 1947
  • Born 1953–1964: age 56
  • Born 1965–1969: age 56 plus two months for each year after 1964
  • Born 1970 or later: age 57

Reaching the MRA is only half the equation. To collect an unreduced annuity at that age, you need 30 years of creditable service.1Office of the Law Revision Counsel. 5 USC 8412 – Immediate Retirement If you have at least 10 years but not 30, you can still leave at the MRA, but your annuity drops permanently by 5 percent for each year you’re under 62.2U.S. Office of Personnel Management. Types of Retirement A 57-year-old going the MRA+10 route locks in a 25 percent reduction for life. MRA+10 retirees also don’t qualify for the FERS annuity supplement, a bridge payment that runs until age 62 for those who retire at the MRA with 30 years of service.3U.S. Office of Personnel Management. Chapter 51 – Retiree Annuity Supplement

FERS also offers two fixed-age paths that don’t depend on birth year:1Office of the Law Revision Counsel. 5 USC 8412 – Immediate Retirement

  • Age 60 with 20 years of service, full annuity
  • Age 62 with 5 years of service, full annuity

Why Age 62 Matters Under FERS

Age 62 is the single most important number in FERS. Retire at 62 or later with at least 20 years of service and your annuity is calculated with a 1.1 percent multiplier per year instead of the standard 1.0 percent.4Office of the Law Revision Counsel. 5 USC 8415 – Computation of Basic Annuity Applied across your whole career against your highest three consecutive years of salary, that 10 percent bump is substantial. Someone with 25 years and a high-3 of $100,000 gains about $2,500 per year for life.

Age 62 is also when cost-of-living adjustments generally begin for FERS retirees. If you retire at 57 under MRA+30, your annuity stays flat for five years while inflation eats at it. Disability retirees and those who left under special provisions for law enforcement, firefighting, or air traffic control are the exceptions. For 2026, the FERS COLA is 2.0 percent, compared with 2.8 percent under the older CSRS.5U.S. Office of Personnel Management. Cost of Living Adjustments

CSRS Retirement Ages

Federal employees hired before 1987 who remained under the Civil Service Retirement System have simpler thresholds:6U.S. Office of Personnel Management. Eligibility

  • Age 55 with 30 years of service, full annuity
  • Age 60 with 20 years of service, full annuity
  • Age 62 with 5 years of service, full annuity

CSRS employees don’t pay into Social Security through their federal job, so the annuity itself is the primary retirement income. The formula compensates: 1.5 percent for the first 5 years, 1.75 percent for the next 5, and 2.0 percent for each year after that. CSRS retirees also get full COLAs from day one rather than waiting until 62.5U.S. Office of Personnel Management. Cost of Living Adjustments

Federal Jobs With Mandatory Retirement Ages

Some federal positions force separation at a set age regardless of what the employee wants.

Law Enforcement Officers and Firefighters

Federal law enforcement officers, firefighters, nuclear materials couriers, and customs and border protection officers must separate on the last day of the month they turn 57, provided they’ve completed 20 years of service.7Office of the Law Revision Counsel. 5 USC 8425 – Mandatory Separation The President can grant exemptions, but they’re rare. In exchange for the shorter career, these employees get 1.7 percent of high-3 for the first 20 years and 1.0 percent per year after that.8U.S. Office of Personnel Management. Computation Someone retiring at 57 with exactly 20 years walks away with 34 percent of their high-3, versus 20 percent for a regular FERS employee with the same tenure.

Air Traffic Controllers

Controllers must separate by the last day of the month they turn 56, or when they complete 20 years of service if they’re already past 56.7Office of the Law Revision Counsel. 5 USC 8425 – Mandatory Separation The Secretary of Transportation can extend an exceptional controller’s service up to age 61 but must give at least 60 days’ written notice before any separation. Controllers use the same enhanced 1.7/1.0 percent formula as law enforcement.8U.S. Office of Personnel Management. Computation

Foreign Service Officers

Career Foreign Service members face mandatory retirement at the end of the month they turn 65.9U.S. Department of State. 3 FAM 6210 Foreign Service Mandatory Retirement The Director General can extend active service up to five additional years in the public interest. Diplomatic Security special agents follow the 57-with-20 rule that applies to other federal law enforcement.

Article III Federal Judges

Federal judges have no mandatory retirement age. Supreme Court justices and circuit and district court judges hold lifetime appointments that end only by voluntary departure, resignation, or impeachment.10United States Courts. Types of Federal Judges A judge can take “senior status” with a reduced caseload once they reach 65 with at least 15 years on the bench, or any combination of age and service totaling 80 with a minimum of 10 years of service.

Social Security Full Retirement Age

Social Security’s full retirement age (FRA) is the age at which you can claim 100 percent of the benefit you’ve earned. It’s set by birth year:11Office of the Law Revision Counsel. 42 USC 416 – Additional Definitions

  • Born 1937 or earlier: age 65
  • Born 1938–1942: age 65 plus two months for each year after 1937
  • Born 1943–1954: age 66
  • Born 1955–1959: age 66 plus two months for each year after 1954
  • Born 1960 or later: age 67

For anyone born in 1960 or later, which covers most people still in the workforce, the number to remember is 67.

Claiming Social Security Earlier or Later

You can start Social Security as early as 62, but the reduction is permanent. For someone whose FRA is 67, claiming at 62 cuts monthly benefits by 30 percent.12Social Security Administration. Retirement Age and Benefit Reduction A $2,000 benefit at 67 becomes $1,400 at 62 and stays there. The reduction is five-ninths of one percent for each of the first 36 months before FRA, then five-twelfths of one percent for each additional month.

Waiting past FRA runs the other way. Each year you delay between FRA and age 70 adds 8 percent to your benefit.13Social Security Administration. Delayed Retirement Credits Someone with an FRA of 67 who waits until 70 collects 124 percent. After 70, there’s no further increase, so there’s no financial reason to delay past that point.

Working While Collecting Social Security

Earning wages before you reach FRA can temporarily reduce your Social Security check. For 2026:14Social Security Administration. Receiving Benefits While Working

  • Under FRA all year: Social Security withholds $1 for every $2 you earn above $24,480.
  • In the year you reach FRA, for the months before your birthday month: $1 withheld for every $3 above $65,160.
  • At FRA and after: no earnings limit at all.

The withheld money isn’t lost. Once you reach FRA, Social Security recalculates your benefit to credit you for the reduced months. But the temporary drop catches many early claimers off guard, especially those planning to work part-time while collecting.

What Happens at 65

Age 65 triggers Medicare eligibility, and that matters for federal retirees carrying Federal Employees Health Benefits into retirement. To keep FEHB after you retire, you must have been continuously enrolled for the five years immediately before your retirement date, and your annuity must start within one month of separation.15U.S. Office of Personnel Management. Health

Once you’re 65 and enrolled in Medicare Parts A and B, Medicare pays first and FEHB picks up remaining costs, often waiving copays and deductibles that would otherwise apply.16U.S. Office of Personnel Management. Medicare If you’re already collecting Social Security, Medicare enrollment is automatic at 65. If you’re not, which is common for federal retirees living on their FERS annuity alone, you have to sign up yourself. The Part B enrollment window runs seven months, starting three months before your 65th birthday month and ending three months after.17Medicare. When Does Medicare Coverage Start? Miss it, and a late enrollment penalty increases your Part B premium for as long as you have coverage, growing larger with each year of delay.