Actuarial valuations are technical reports providing full disclosure of the financial and funding status of public retirement systems administered by the Department of Retirement Systems.  Valuations for odd-numbered years are also used to set contribution rates for the ensuing biennium.  For those valuations, the Pension Funding Council oversees an actuarial audit of the results by an outside actuary. 

OSA also performs annual valuations of the Volunteer Fire Fighters’ and Reserve Officers’ Relief and Pension Fund Act (RCW 41.24), which is administered by the Board for Volunteer Fire Fighters and Reserve Officers.  Its valuation is published separately.

The California Research Bureau (CRB) provides a plain language primer that summarizes and explains the actuarial methods and practices used by OSA when preparing the annual actuarial valuations. Here is a link to the report PDF.

The 2018 Actuarial Valuation is on the Historical Valuations page.

Please note the impacts of COVID-19 are not reflected in the 2019 Actuarial Valuation. More information can be found on our dedicated webpage, COVID-19 and its Impacts to the Washington State Retirement Systems.

Preliminary 2019 Actuarial Valuation

2019 Actuarial Valuation [August 31, 2020]

2019 Actuarial Audit Report [September 30, 2020]

PDF Icon Letter of Introduction [750 kb]

 Section One:  PDF Icon Summary of Key Results [1037 kb]

 Section Two:  PDF Icon Actuarial Exhibits [7389 kb]

PDF Icon Certification Letter [780 kb]

PDF Icon Contribution Rates [2327 kb]

PDF Icon Actuarial Liabilities [2888 kb]

PDF Icon Plan Assets [1374 kb]

PDF Icon Funded Status [759 kb]

PDF Icon Actuarial Gains-Losses [753 kb]

 Section Three: PDF IconParticipant Data [6238 kb]

 Section Four:  PDF Icon Appendices [3461 kb]

PDF Icon Actuarial Methods/Assumptions [684 kb]

PDF Icon Summary of Plan Provisions [1913 kb]

Age Distributions

Historical Data


Law Enforcement Officers' and Fire Fighters' Retirement System Plan 2

This link provides access to the 2018 LEOFF 2 Actuarial Valuation Report PDF, posted on the LEOFF 2 website. 

Volunteer Fire Fighters' and Reserve Officers' Retirement System

2018 Volunteer Fire Fighters Relief and Pension Fund Valuation [3775 kb] PDF Icon

The 2017 VFF AVR is on the Historical Valuations page.

2018 Volunteer Fire Fighters Relief Experience Study [8965 kb] PDF Icon

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Last Reviewed: 06/29/2020

Last Updated: 06/29/2020