Illinois pensions are 47% funded, and $1 of every $5 the state spends goes to catching up

Unlike Social Security's federal trust funds, Illinois' pension crisis has no separate financing mechanism to fall back on — it's paid straight out of the same general fund that covers schools, health care, and everything else the state does.▸ That fund has been sending an ever-larger share of every tax dollar to a hole that's taken decades to dig, and the state's own numbers say it will take another two decades to climb out.

Illinois' five state retirement systems track what they owe (liabilities) against what they actually have on hand (assets).▸ The gap between them is the unfunded liability that shows up in every credit-rating report and budget fight.

The state has promised $257 billion in future benefits and has $115 billion set aside to pay for it — a $142 billion gap, per CGFA's FY 2024 Financial Condition of the State Retirement Systems report, and one of the largest of any state in the country on a per-capita basis.▸ Closing it isn't optional: Illinois' constitution treats pension benefits as a contractual right that can't be diminished, so the state's only lever is how fast it pays the gap down, not whether it owes the money. In FY2026, that payment is $11.7 billion, per CGFA's 2024 Special Pension Briefing — part of $15.9 billion in "hard costs" inside a $55.2 billion general fund, per the Center for Tax and Budget Accountability's analysis of the enacted budget — meaning pension contributions alone consume roughly a fifth of everything the state spends.

Illinois isn't trying to close the gap overnight — it's on a statutory payment schedule that stretches two more decades, and the state's own actuaries say it's working, just slowly.

At 47.4%, Illinois is about 35 percentage points below the 80% funded ratio the GAO treats as the standard for a healthy public pension system.▸ The state's own projections, in the same CGFA briefing, show that ratio climbing to 90% — but not until FY2045, two decades away, and only if lawmakers keep making the full scheduled payments every year between now and then. Real spending on core state services, adjusted for inflation, is already about 14.3% lower than it was in FY2000, a gap CTBA's budget analysts attribute in large part to pension costs crowding out everything else.

The politics are getting harder, not easier.▸ Illinois has earned 10 credit rating upgrades in recent years — more than any state in the last 25, per the governor's office — after spending years near junk status, and Governor Pritzker has said he won't sign any pension change that risks reversing that progress. That puts him at odds with a "Tier 2" reform bill moving through the legislature that would improve retirement benefits for workers hired after 2011, whose pensions were cut to help control costs; budget watchdogs like the Civic Federation warn the reform could add tens of billions in new long-term costs unless it's paired with new revenue.

Figures reflect the state's own actuarial and budget reporting as of the most recent published fiscal year; year-to-year figures (FY2023 assets/ liabilities, FY2025 funded ratio, FY2026 contribution) come from different reporting cycles and are not all as of the same date.