FERS Disability Payment Amounts Depend on Your Age and Years of Service

The amount you receive from Federal Employees Retirement System (FERS) disability is not a flat rate. It is calculated using a formula that accounts for your age when you became disabled, how long you worked for the federal government, and your highest average salary over a specific period. The Office of Personnel Management (OPM) computes this individually for each person approved for FERS disability.

Your payment is based on your high-3 average salary — the highest average of your basic pay over any three consecutive years of federal employment. This is multiplied by a percentage that depends on your age and length of service at the time you became disabled. The younger you are and the fewer years you have worked, the lower your percentage will be.

FERS disability payments are not the same as Social Security Disability Insurance (SSDI). You may receive both, but they are administered by different agencies and calculated separately. OPM handles FERS; the Social Security Administration handles SSDI.

Key Takeaways

  • Your FERS disability payment is calculated by multiplying your high-3 average salary by a percentage based on your age and years of service when you became disabled.
  • The percentage ranges from roughly 40% to 60% of your high-3 salary, depending on whether you meet the "offset" or "no offset" criteria.
  • FERS disability payments begin after a waiting period and are adjusted annually for cost-of-living increases.
  • You may receive both FERS disability and Social Security Disability Insurance at the same time, though SSDI may reduce your FERS payment if you are under age 62.

How the Percentage Is Determined: Offset vs. No Offset

OPM uses two different formulas depending on whether you are subject to the FERS offset. The offset applies if you became disabled before age 62 and did not have at least 20 years of federal service. In this case, your FERS disability payment is reduced by 50% of any Social Security Disability Insurance (SSDI) payment you receive.

If you had 20 or more years of service when you became disabled, or if you are age 62 or older, you are not subject to the offset. Your FERS payment stands alone and is not reduced by SSDI. This is called the "no offset" scenario and results in a higher total payment.

The base percentage used in the calculation also differs. Under the offset formula, you typically receive about 40% to 50% of your high-3 salary. Under the no-offset formula, you typically receive about 60% of your high-3 salary. These are rough ranges; your exact percentage depends on your specific age and service record.

When Payments Begin and How They Are Adjusted

FERS disability payments do not begin when ready after you are approved. There is a waiting period of one month after OPM makes its final decision. Your first payment arrives in the month following approval.

Once you begin receiving FERS disability, your payment is adjusted every January for cost-of-living adjustments (COLA). The adjustment percentage is set by law and is the same for all FERS disability recipients. This means your payment grows each year to keep pace with inflation, though the percentage increase varies year to year.

If you return to federal service or earn income above a certain threshold, your FERS disability payment may be suspended or reduced. OPM monitors your work status and will contact you if your circumstances change.

Examples of How Payment Amounts Are Calculated

Suppose you are a federal employee with a high-3 average salary of $60,000 and you became disabled at age 45 with 15 years of service. You are subject to the offset because you have fewer than 20 years of service. Your FERS disability payment might be calculated as roughly 40% of $60,000, or $24,000 per year before the SSDI offset is applied. If you also receive $18,000 per year in SSDI, your FERS payment would be reduced by 50% of that amount ($9,000), bringing your net FERS payment to $15,000 per year.

Now suppose you are a different employee with the same high-3 salary of $60,000, but you became disabled at age 50 with 22 years of service. You are not subject to the offset because you have 20 or more years of service. Your FERS disability payment would be calculated as roughly 60% of $60,000, or $36,000 per year. If you also receive SSDI, your FERS payment is not reduced — you receive the full $36,000 from FERS plus whatever SSDI amount you are may have access to to.

These are simplified examples. Your actual payment depends on the exact formula OPM applies to your service record, and the formula can be complex. OPM will provide a detailed calculation when you are approved.

What Happens to Your FERS Disability Payment at Age 62

At age 62, your FERS disability payment is converted to a regular FERS retirement annuity. The amount does not change, but the legal basis for the payment shifts from disability to age-based retirement. You are no longer required to report your work status to OPM, and the offset no longer applies if you are receiving SSDI.

This conversion is automatic — you do not need to take any action. OPM will notify you before it happens. After age 62, you can work without any limit on your earnings, and your FERS payment will not be affected.

How to Find Out Your Specific Payment Amount

OPM does not publish a calculator or table that shows what you will receive. The only way to learn your exact payment amount is to request a FERS disability estimate from OPM or to complete the FERS disability process process, which includes a detailed calculation.

If you are currently a federal employee, your agency's human resources or benefits office can help you request an estimate. If you are a former federal employee, you can contact OPM's Retirement Services directly by phone at 1-888-767-6738 or through their website at opm.gov. Have your Social Security number and federal service dates ready.

During the FERS disability process process, OPM will provide a written estimate of your payment amount before you are formally approved. This estimate is based on your service record and salary history as of the date you explore.

Frequently Asked Questions

Can I receive both FERS disability and Social Security Disability Insurance?

Yes, you can receive both. However, if you are under age 62 and subject to the FERS offset, your FERS payment will be reduced by 50% of your SSDI amount. At age 62, the offset ends and you receive the full amount of both payments.

Does my FERS disability payment change if I go back to work?

It may be suspended or reduced depending on how much you earn. OPM has specific rules about work and income thresholds. You must report any employment to OPM, and they will determine whether your payment continues in full, in part, or not at all.

What if I disagree with the payment amount OPM calculated?

You can request a reconsideration of OPM's calculation. You must submit your request in writing within 30 days of receiving the decision letter. Include any documents that support your claim, such as pay stubs or service records that show different salary or service information than what OPM used.

Is my FERS disability payment taxed?

Yes, FERS disability payments are subject to federal income tax. They are treated as taxable income on your tax return. OPM does not withhold taxes automatically, so you may need to make estimated tax payments or adjust your withholding if you have other income.

What happens to my FERS disability payment if I die?

Your survivor may be may have access to to a survivor annuity depending on your age, years of service, and whether you elected survivor benefits when you applied for disability. Contact OPM to learn what your beneficiaries may receive.