Unfunded Liability
$32.05B
actuarial shortfall
FY2023 data · Public Plans Database
Illinois Municipal Retirement Fund
The Public Plans Database's 23-year record for Illinois Municipal Retirement Fund: funded ratio, unfunded liability, member counts, and investment returns, compiled by Boston College CRR and cross-checked against actuarial valuations.
By PlainPension · · Illinois · Municipal Plan · Data through FY2023
- Funded ratio
- 62.2%
- Health grade
- CReported funded ratio below full funding
- Market assets
- $52.63B
- Members
- 519,512
According to the Public Plans Database, compiled by the Boston College Center for Retirement Research, Illinois Municipal Retirement Fund is one of 197 public pension plans tracked nationwide. The plan card reports FY2023 valuation figures; the multi-year table includes FY2024 where PPD published it; this site’s database copy was last loaded in July 2026. See our methodology for the full source and update cadence.
Total Members
519,512
active + retired + vested
1-Year Return
2.4%
net investment return
-5.7pp vs 5-yr avg
5-Year Avg Return
8.1%
annualized, net of fees
How Illinois Municipal Retirement Fund Funded Ratio Compares
Plan Funded Ratio 62.2%
National avg
A ratio of 62.2% compared against the national public-pension average of 75.5%.
Healthy Threshold
Plans above 80% are generally considered adequately funded by NASRA standards.
Participant Composition
The active-to-retiree ratio is a leading indicator of long-term plan sustainability, plans with more retirees than active contributors face mounting cash-flow pressure as benefit payments outpace incoming contributions.
Investment Policy Mix
Public pension plans report their asset allocation in their annual CAFR and actuarial valuation. Equity-heavy mixes capture market upside but introduce volatility; fixed-income tilts protect funded status during downturns at the cost of long-run return.
Historical Funded Ratio
| Year | Funded Ratio |
|---|---|
| 2024 | 63.0% |
| 2023 | 62.2% |
| 2022 | 61.2% |
| 2021 | 58.3% |
| 2020 | 55.3% |
| 2019 | 55.2% |
| 2018 | 55.2% |
| 2017 | 54.9% |
| 2016 | 54.7% |
| 2015 | 62.2% |
| 2014 | 61.4% |
| 2013 | 60.0% |
| 2012 | 59.2% |
| 2011 | 59.4% |
| 2010 | 61.4% |
| 2009 | 64.6% |
| 2008 | 68.8% |
| 2007 | 67.5% |
| 2006 | 65.0% |
| 2005 | 68.6% |
What the Data Says About Illinois Municipal Retirement Fund
Illinois Municipal Retirement Fund reports a funded ratio of 62.2% as of fiscal year 2023, earning a financial health grade of C in the Public Plans Database. The plan holds $52.63B in market assets against an unfunded liability of $32.05B. As a Municipal plan operating under Illinois sponsorship, it covers 519,512 members (181,357 active contributors, 153,479 retirees drawing benefits).
Illinois Municipal Retirement Fund is funded above the midpoint but still carries a real shortfall, 13 points below the 75.5% national average across tracked plans. A 5-year average investment return of 8.1% factors into the plan's overall trajectory.
For Illinois taxpayers and plan members, the $32.05B unfunded gap is the actuarial shortfall this plan must close over time.
Where this data comes from + how funding gaps get resolved
These figures come from the Public Plans Database, a collaboration between the Boston College Center for Retirement Research and NASRA that compiles them from each plan's Comprehensive Annual Financial Reports (CAFRs) and actuarial valuations. The relationship between contribution adequacy and investment performance determines whether an unfunded liability narrows or expands year over year, and the gap itself is typically closed through some combination of higher contributions, investment returns, or benefit modifications. See our methodology for how public-pension funding differs from ERISA-backed private plans, and our disclaimer below before acting on this data.
Membership
181,357
Active Members
153,479
Retirees
519,512
Total Members
Plan Details
- Plan Type
- Municipal
- State
- Illinois
- Market Assets
- $52.63B
Source: Public Plans Database (PPD)
Boston College CRR / NASRA
Boston College CRR / NASRA
Plans With a Similar Funded Ratio
The closest plans nationwide to Illinois Municipal Retirement Fund's 62.2% funded ratio.
Other Illinois Plans
- Chicago Municipal Employees 97.3%
- Illinois State Retirement Systems 97.2%
- Illinois State Universities Retirement System 96.6%
- Chicago Police 92.5%
- Illinois Teachers Retirement System 83.7%
Frequently Asked Questions
Is Illinois Municipal Retirement Fund fully funded?
Illinois Municipal Retirement Fund has a funded ratio of 62.2% as of FY2023, earning a health grade of C. The reported ratio shows actuarial assets divided by actuarial accrued liabilities for the stated fiscal year. Its interpretation depends on the plan's assumptions, valuation date, and contribution history.
What happens if Illinois Municipal Retirement Fund runs out of money?
A public plan's reported ratio is only one part of its financial picture. PlainPension does not predict actions by Illinois Municipal Retirement Fund, Illinois, or any public body.
What does a funded ratio of 62.2% mean?
A funded ratio of 62.2% means that Illinois Municipal Retirement Fund currently has assets equal to 62.2% of its projected benefit obligations. The unfunded liability, the gap between assets and liabilities, stands at $32.05B. This represents a moderate funding gap that requires ongoing monitoring.
How does Illinois Municipal Retirement Fund compare to other public pensions?
Illinois Municipal Retirement Fund is a Municipal plan in Illinois serving 519,512 members. Nationally, the average funded ratio for public pension plans tracked by the Public Plans Database is approximately 75.5%. Illinois Municipal Retirement Fund's funded ratio of 62.2% places it below the national average, indicating elevated fiscal pressure.
How many members does Illinois Municipal Retirement Fund have?
Illinois Municipal Retirement Fund covers 519,512 total members, including 181,357 active employees and 153,479 retirees currently receiving benefits. The ratio of active members to retirees is a key indicator of plan sustainability, when the number of retirees grows relative to active contributors, funding pressure increases.
Related
Data sourced from official Public Plans Database and actuarial valuations from federal and state pension systems. See our methodology for details. Retrieved and formatted by PlainPension
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the Public Plans Database (PPD). Consult a qualified professional before making decisions based on this data.
Read our methodology - how this data is sourced, computed, and verified.
Data sources used on this page
- Public Plans Database (PPD) - funded ratios, assets, liabilities, and member counts for US state and local public pension plans, maintained by the Boston College Center for Retirement Research with MissionSquare Research Institute and NASRA. publicplansdata.org
- NASRA - National Association of State Retirement Administrators public-pension actuarial and policy references. nasra.org
Every figure on PlainPension is rendered directly from the Public Plans Database (Boston College Center for Retirement Research), no number is typed in by an editor. This page aggregates this plan's funded ratio, unfunded liability, and multi-year financial history, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.