IMRF Online - Purchasing Past Service Credit from IMRF

Regardless of the type of service you are purchasing—whether you are converting military service, repaying a refund, or purchasing another type of service—the service you are purchasing is called “Past Service.” Below is a table of the most common types of Past Service available to purchase through IMRF. A brief fact sheet and the form you must submit are also linked.

Your situation and IMRF service type	Form you need to complete
Reinstated Service You took a refund of your IMRF contributions. You want to pay back the refund and reinstate your service.	Application for Reinstatement of Service Credit, Form 6.03
Omitted Service Your position qualified for IMRF, but your employer did not enroll you in IMRF.	Omitted Service Credit Verification, Form 6.05
Military Service You wish to convert time served in the U.S. Military to IMRF service. The most common type is military service earned before you joined IMRF.	Application for Military Service Credit, Form 6.02J
Prior Service You were working for your employer when it joined IMRF. You were granted the maximum free service (20% of your service up to 5 years) and wish to purchase your remaining service.	Application for Prior Service Credit, Form 6.07
Benefit Protection Leave You will take a leave of absence from your job. While on leave, you want to earn IMRF service credit and you want your IMRF disability and death protection to continue.	IMRF Benefit Protection Leave, Form 6.32. (Note: You should file this form before your leave begins.)
Retroactive Service You are an elected official who held an office qualifying for IMRF. You now participate in IMRF and wish to purchase up to 50 months of previous elected official service.	Application for Retroactive Service Credit, Form 6.04
Out-of-State Service You have service credit with a public pension system in another state and wish to convert it to IMRF service credit.	Out-of-State Credit Authorization, Form 6.33
Conversion of service credit from ECO You participate in the Elected County Officials (ECO) plan and want to convert your existing SLEP or Regular service credit to ECO service credit.	Conversion of Regular or SLEP Service Credit to ECO Service Credit, Form 6.06
Conversion of service credit to SLEP You participate in the SLEP plan and want to convert your existing Regular service credit to SLEP service credit.	Conversion of Regular service credit to SLEP service credit for earnings previously reported to IMRF, Form 6.09

Types of IMRF Past Service Credit

What is past service?