Wash. Admin. Code § 415-112-292
If you earned service credit for teaching out-of-state or for the federal government, you may be eligible to purchase that public education experience as TRS service credit. The public education claimed must have been covered by a retirement or pension plan and must have been as a teacher, as defined by that retirement or pension plan.
(1) Do I qualify to purchase TRS service credit for public education experience outside of the state of Washington? You are eligible to purchase service credit under this section if you meet all the following requirements at the time of purchase:
(4) What is the cost of the service credit? You must pay the actuarial value of the resulting increase in your retirement allowance. The following formula is used to calculate the cost:
Total Cost = Part 1 Cost + Part 2 Cost
Part 1: Annual Average Salary x Service Credit Years to Purchase x Factor 1
Part 2: Annual Average Salary x Current Service Credit Years x (Factor 1 – Factor 2)
Factor 1 takes into consideration your current age and service credit, including the service credit you are purchasing.
Factor 2 takes into consideration your current age and service credit, excluding the service credit you are purchasing.
Example of Cost to Purchase Service Credit:
TRS Plan 2 member, age 45, with 15 years of service credit and 5 years to be purchased for public education experience.
Part 1:
• Annual Average Salary: $40,000
• Years to Purchase: 5
• Factor 1: 0.1756*
Part 2:
• Annual Average Salary: $40,000
• Current Service Credit Years: 15
• Factor 2: 0.1494*
Total Cost to Purchase Service Credit:
$40,000 (Annual Average Salary) x 5 (Years To Purchase) x 0.1756 (Factor 1) = $35,120
$40,000 (Annual Average Salary) x 15 (Current Service Credit) x (0.1756 - 0.1494) (Factor 1 - Factor 2) = $15,720
Total Cost = $50,840 (Part 1 + Part 2)
*Factors used are for illustration purposes in this example only as actuarial factors change periodically.
(7) How do I purchase the service credit? To purchase TRS Plan 2 or Plan 3 service credit for out-of-state or federal public education experience, you must do the following:
(a) You must complete an application provided by the department.
(b) You must make payment in full by the due date. If your payment is not received by the due date, your bill will become null and void. You may request a new bill from the department at a later date and it will reflect factors in effect at that time.
[Statutory Authority: RCW 41.50.050(5). WSR 14-06-053, § 415-112-292, filed 2/27/14, effective 10/1/14; WSR 13-18-034, § 415-112-292, filed 8/28/13, effective 10/1/13. Statutory Authority: RCW 41.50.050(5), 41.32.065, and 41.32.300. WSR 10-14-112, § 415-112-292, filed 7/7/10, effective 8/7/10.]