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Yearly Supplemental Pension Payment
("13th Payment")

The supplemental benefit payment, also known as the "13th payment," is mailed to eligible retired members (or to their surviving spouses) every July. This supplemental benefit payment is mailed out after the July benefit payments.

This additional payment does not affect a retired member's pension. If you receive a "13th payment," you will continue to receive your pension every month and your annual 3 percent increase every January.

Who is eligible to receive the "13th Payment?"

You may be eligible for the supplemental benefit payment if you are a retired IMRF member receiving a pension or if you are receiving an IMRF surviving spouse pension, and if your IMRF pension has been effective for 12 consecutive months (up to and including the June prior to the supplemental payment).

To be eligible for the current calendar year supplemental pension payment, your pension effective date (or your deceased spouse if you are receiving an IMRF surviving spouse pension) must be on or before July 1 of the prior calendar year.

For example, to receive the supplemental benefit payment for 2014, you must have retired before July 1, 2013.

How much is the "13th Payment?"

The 2014 13th payment is 36.237% of your monthly pension amount. The amount of the additional pension payment will vary in future years.

You will receive this additional pension payment each July unless the Illinois General Assembly approves compounding your annual 3 percent pension increase.

For more information

For detailed information about the supplemental benefit payment and its calculation, refer to IMRF Topic Letter #19, "Supplemental Benefit Payment ("13th Payment").


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IMRF Online provides a brief summary of IMRF benefits and the adminstration of those benefits. IMRF members' and employers' rights and obligations are governed by Article 7 of the Illinois Pension Code. Statements in these publications are general, and the Illinois state law governing IMRF is complex and specific. If a conflict arises between information in these publications and the law, all decisions are based on the law.

Copyright Illinois Municipal Retirement Fund

Page Last Updated by RS on 05-22-2014