United States 

Office of 

Personnel Management

The Federal Government’s Human Resources Agency

Benefits Administration Letter

Number: 18-303 Date: August 2018 

Subject: Fiscal Year 2018 Cost Factors for Calculating Imputed Costs 

This Letter provides the fiscal year (FY) 2018 cost factors for the Federal civilian benefit 

programs. Agencies will use these factors to calculate their imputed costs relating to the Civil 

Service Retirement System (CSRS), the Federal Employees Retirement System (FERS), 

the Federal Employees Health Benefits Program (FEHB) and the Federal Employees’ Group 

Life Insurance Program (FEGLI). The imputed costs are used to determine the actuarial liabilities 

which are included in Governmental financial statements. 

Benefits Administration Letter (BAL) 03-309, dated September 15, 2003, provides detailed 

instructions for the computation and accounting for imputed costs related to the Federal civilian 

benefit programs; see http://www.opm.gov/retire/pubs/bals/2003/03-309.pdf for more information. 

COST FACTORS

Pensions. The economic assumptions used to calculate the FY 2018 cost factors under Statement of 

Federal Financial Accounting Standard (SFFAS) 33: Pensions, Other Retirement Benefits, and 

Other Postemployment Benefits: Reporting the Gains and Losses from Changes in Assumptions and 

Selecting Discount Rates and Valuation Dates are based on 10-year historical averages. These 

economic assumptions differ from those established by OPM under guidance from the CSRS Board 

of Actuaries for the determination of certain statutory funding payments for CSRS and FERS. 

For most CSRS-covered employees, the FY 2018 cost factor is 37.4 percent of basic pay. The 

FY 2018 cost factors for all categories of CSRS coverage are attached. While agency payments 

under CSRS are not affected by the CSRS normal cost percentages for the vast majority of agencies, 

the CSRS normal cost percentages determined under SFFAS 33 are used to determine the actuarial 

liabilities which are included in Governmental financial statements.

The FY 2018 cost factors reported in this BAL also differ from the normal cost percentages used to 

determine the employer contributions agencies pay for FERS employees. For most FERS-covered 

employees, the FY 2018 cost factor is 16.2 percent of basic pay. The cost factors for all categories of 

FERS coverage are attached. Since the cost factors reported under SFFAS 33 are determined on a 

different basis than are the actual FERS normal cost contributions, agencies should expect to continue 

to report future imputed retirement costs for their FERS employees.
FEHB Program. For FY 2018, the cost factor is $7,151 per enrolled employee. Please note that 

the cost factors shown below are based on the actuarial assumptions required by SFFAS 33, as 

calculated by the FEHB actuary.

Quarter Factor

1st

 $1,757 

2nd 1,777 

3rd 1,798 

4th 1,819 

FY 2018 $7,151 

FEGLI Program. The FY 2018 cost factor for the FEGLI is 0.02 percent of basic pay, the same 

as in previous years. 

STATEMENT FOR AUDITORS

The FY 2018 cost factors provided in this letter are being issued before an opinion by OPM’s 

independent public accounting firm can be received for FY 2018. Nonetheless, the FY 2017 cost 

factors for “regular” CSRS and FERS coverage, as well as those for the FEHB and FEGLI 

Programs, were disclosed in the footnotes accompanying OPM’s consolidated FY 2017 financial 

statements. These statements received an unqualified audit opinion. The policies, procedures and 

controls pertaining to the calculations of the FY 2018 cost factors did not change from FY 2017. 

Consequently, auditors of the FY 2018 financial statements can rely upon the disclosures in Office 

of Personnel Management’s FY 2017 financial statements and the related audit opinion. 

INQUIRIES

If you have any questions regarding this information, feel free to email us at 

FinancialBALs@opm.gov. You may also phone us at (202) 606-0606. 

 

 

 

 

Tonya R. Johnson 

Associate Chief Financial Officer

Financial Services

Attachment
Attachment

2018 COST FACTORS FOR THE CSRS AND FERS

CSRS

CATEGORY COST FACTOR (%)

Regular 37.4

Regular Offset 27.9

Law Enforcement Officers 62.0

Law Enforcement Officers - Offset 53.2

Air Traffic Controllers 50.7

Air Traffic Controllers – Offset 43.6

Members of Congress 42.8

Members of Congress – Offset 39.6

Congressional Employees 50.7

Congressional Employees – Offset 41.5

FERS

CATEGORY COST FACTOR (%)

Regular 16.2

Law Enforcement Officers 33.8

Air Traffic Controllers 33.5

Members of Congress 23.2 

Congressional Employees 23.1

Military Reserve Technicians 19.3 
FERS-Revised Annuity Employees (RAE)

CATEGORY COST FACTOR (%)

Regular - RAE 16.7

Law Enforcement Officers - RAE 34.3

Air Traffic Controllers - RAE 33.9

Military Reserve Technicians - RAE 19.7 

FERS-Further Revised Annuity Employees (FRAE)

CATEGORY COST FACTOR (%)

Regular - FRAE 16.9

Law Enforcement Officers - FRAE 34.5

Air Traffic Controllers - FRAE 34.1

Military Reserve Technicians - FRAE 20.0