Chicago's Tax Increment Financing: Who Paid, Who Gained? (González, Wilson, Córdova & Campos, 2026)

Summary

"Chicago's Tax Increment Financing: Who Paid, Who Gained?" is a 108-page report by Juan D. González, Matthew D. Wilson, Teresa Córdova, and Jason "Jay" Campos of the University of Illinois Chicago Great Cities Institute, published August 26, 2026. It is a year-long audit of Chicago's Tax Increment Financing (TIF) program since its first district in 1984, built on a parcel-level panel of the city's property-tax base (roughly 750,000 parcels a year, 2010–2024, from Cook County Assessor data) matched against a sample of 346 city-tracked TIF-funded projects (2000–2020). The report's central finding is a distributional one: TIF has raised property-tax rates for every Chicago property owner, inside and outside TIF districts alike, while the great majority of the property-value growth TIF captures would have happened without it.

The Core Argument and Findings

TIF mechanics. A TIF district freezes the taxable (equalized) assessed value of every parcel inside it at the level in effect when the district is created. As property values rise, the tax revenue generated above that frozen base — the "increment" — is diverted into a dedicated TIF fund rather than added to the general tax base that other taxing bodies (the city, Chicago Public Schools, the county, parks, libraries) draw on. Because those taxing bodies' total levies are fixed independently of how much value sits in TIF funds, freezing a growing share of the city's tax base out of general use pushes up the rate applied to everyone else's property to raise the same levy.

The tax-rate shift, 2014–2023. Under the report's preferred set of assumptions (its "Point Estimates" scenario — see below), TIF raised Chicago property-tax rates for all city property owners by an average of 13.7 percent over the 2014–2023 study period, with the effect compounding from 7.8 percent in 2014 to 18.6 percent by 2023 as the frozen, diverted tax base grew (Executive Summary, p. III). That translates to roughly $721 million a year in additional property tax citywide on average, rising to about $1.1 billion in 2023 and totaling $7.21 billion over the decade (p. III). For a typical Chicago homeowner with a $300,000 house, the shift meant $878 in extra tax in 2023 alone and $6,616 over the ten years (p. III). By 2023 the report's counterfactual (no-TIF) tax base — $118.21 billion — was 18.6 percent larger than the actual $99.65 billion base actually taxed at general rates, a gap of $19.26 billion in property value shielded from general taxation that year (Section 2, p. 26). "This gap is the structural reason tax rates are higher under TIF than they would be otherwise: the same levy must be spread over a smaller base, raising rates for every property owner" (p. 26).

The but-for (attribution) finding. Separately from the tax-rate shift, the report asks how much of the value captured as increment TIF actually caused, versus how much was "organic growth" — appreciation from inflation and market trends that would have occurred regardless. Using a difference-in-differences design (a stacked Wooldridge estimator) that compares each parcel with its own value over time and tests for parallel pre-trends between TIF-adjacent parcels and comparison parcels a half-mile to a mile away, before attributing any divergence to TIF, the report's preferred point estimate is that only 1.8 percent of the increment captured inside TIF districts is attributable to TIF investment; the remaining 98.2 percent would have appeared without any TIF (Executive Summary, p. III). As the report puts it: "for every dollar of property value TIF investment actually generates, TIF captures $55 of appreciation it did not generate" (p. III). Section 2 restates the point more pointedly: "if only 1.8 percent of increment is TIF-caused, then TIF is not paying for itself — it is paying for itself with money it didn't earn" (p. 30).

Robustness across four scenarios. The 1.8 percent figure rests on a specific set of "spillover coefficients" (the estimated effect of a nearby TIF project on property values: +2.5 percent for commercial parcels, −2.0 percent for industrial, 0 percent for residential, the last set to zero because the residential pre-trend test failed and would not support a causal estimate). To test how much the findings depend on those specific numbers, the report reruns its full calculation under four scenarios spanning "Baseline" (TIF has zero effect on any property type) through "Conservative," the preferred "Point Estimates" scenario, to an "Implausibly Pro-TIF" stress test that assumes positive effects on every property type well beyond what the report's own data or prior research supports (Table 11, p. 28). Two things follow from that exercise (Table 12, p. 28): - The tax-rate shift is highly robust: for 2023, the rate increase stays within a 2.0-percentage-point band — 19.3 percent under the null-effect baseline, 19.0 percent conservative, 18.6 percent under the preferred point estimates, and 17.3 percent even under the implausibly pro-TIF stress test — and the added tax burden stays above $1 billion in every one of the four scenarios (p. 28). This is the basis for report co-author Matthew D. Wilson's own summary, published alongside the report in response to a methodological caution reported by the New York Times: "we estimate that Chicago property-tax rates in 2023 were 17 to 19 percent higher because of TIF, with more than $1 billion in additional taxes under every scenario." - The attribution share is not robust in the same way: the TIF-caused share of the increment ranges from 0.0 percent under the null baseline to 6.0 percent under the implausibly pro-TIF stress test, with the preferred 1.8 percent in between (Table 12, p. 28). Even at that generous 6 percent upper bound, "about 94 percent of the increment still is not attributable to TIF investment," in Wilson's words.

These are two different measurements and should not be read as competing figures for the same thing. The 13.7 percent (average) / 18.6 percent (2023) pair tracks a single scenario — the report's preferred spillover-coefficient assumptions — across the ten years of the study period, showing the tax-rate effect growing as diverted increment accumulates. The 17-to-19-percent figure holds the year constant at 2023 and instead varies the causal-attribution assumption across all four scenarios, showing that the rate-shift finding barely moves no matter how much or how little credit TIF is given for the value it captures. What is genuinely robust across every scenario tested is the size of the tax shift; what is not robust — and is explicitly the report's most conservative, hedged number — is the exact share of that shift TIF itself caused.

Where the money went. Since 1986, an estimated 51 percent of tracked TIF project spending — across private development, housing subsidies, school construction, streets, roads, bridges, and parks — went to downtown Chicago or the neighborhoods immediately around it (Executive Summary, p. III). The city's "Central Area/Downtown" planning district held 45 percent of the city's tax base and under 7 percent of its residents (about 184,000 people, 84 percent college-educated) in 2025, and it is these same neighborhoods that have drawn the bulk of TIF investment for more than forty years (p. III). The unevenness holds within the downtown core too: the LaSalle Central TIF, covering much of the Loop, collects roughly $180 million a year, while the 79th Street Corridor TIF on the South Side collects about $1.6 million — a hundredfold gap in funding capacity within the same city (p. 24). In some of the city's wealthiest downtown districts — the report names the Google headquarters, the Bank of America Tower, and the former Commonwealth Edison Building among the properties it reviewed — as little as 1 to 3 percent of the taxes those properties paid went to schools, libraries, parks, and other city services, with the remaining 97 to 99 percent retained in the local TIF fund (Executive Summary, p. III).

Recommendations. The report does not call for eliminating TIF (p. 70). It recommends: amending state TIF law to reduce diversions from overlapping taxing bodies, especially school districts — for example, requiring annual inflation-adjustment of a district's frozen assessed value, or extending the revenue-sharing structure used for transit TIFs to all new districts; more aggressively phasing out downtown TIFs that have achieved their original goals, naming the LaSalle Central TIF specifically (more than $1.4 billion captured since its 2006 creation, scheduled to expire in 2030, which the report argues should not be extended); substantially increasing the under-2-percent share of four decades of TIF spending that has gone to small business, neighborhood, and workforce development; overhauling a TIF data-reporting system the report calls "a confusing hodgepodge of some 200 separate on-line data sets"; creating independent oversight, through an expanded City Council Office of Financial Analysis or an independent budget office on the model of New York City's; and expanding affordable-housing TIF subsidies while controlling the rising per-unit "soft costs" of TIF-subsidized housing projects (p. 70).

Relation to the Georgist Case

TIF is counted among the land value capture instruments: it is sold as a way to fund public investment from the resulting rise in land and property value. This report's own attribution finding complicates that framing rather than confirming it. If, on the report's preferred estimate, roughly 98 percent of the value growth captured inside Chicago's TIF districts would have appeared without any TIF-funded project at all, then most of what TIF actually captures is not value the program created — it is location value the city's tax base would have received anyway, through the same inflation, market appreciation, and neighborhood dynamics driving property values citywide. TIF's freeze mechanism diverts that ordinary appreciation from the general levy into a geographically bounded fund and, because the levies of other taxing bodies do not shrink to match, makes up the difference with a higher rate on every other property owner in the city — a redistribution the report's downtown-concentration finding (51 percent of tracked spending, a hundredfold gap between the LaSalle Central and 79th Street Corridor TIFs) shows running from the whole city toward its already-wealthiest neighborhoods.

That is a specific, zone-bound version of the distributional failure mode a broad-based land value tax is designed to avoid: an LVT captures location value as it accrues, citywide, at one rate, rather than freezing a district's tax base and routing its organic appreciation into a fund walled off from the neighborhoods, schools, and services that did not happen to fall inside its boundary. The comparison should not be overstated — this report evaluates TIF as currently designed and administered in Chicago, not land value taxation, and its authors recommend reforming TIF rather than replacing it with anything Georgist. But the mechanism it documents — publicly created, broadly shared land value diverted into geographically narrow capture zones, with the shortfall made up by raising rates on everyone else — is exactly the concern the betterment levy and land value capture pages already raise about event- and zone-based value capture relative to a continuous, citywide levy.

Nuances and Limits

• The report is Tier 1 institutionally but was written amid live political controversy. It was produced against the backdrop of Mayor Brandon Johnson's TIF reforms and drew immediate pushback; its authors are explicit that they do not recommend eliminating TIF, and the recommendations section credits the Johnson administration's reforms as "needed brakes" while arguing they have not addressed TIF's structural design (p. 70).
• A university economist's methodological caution, and the authors' response, are both on the public record. The New York Times' coverage of the report included a caution from William Fulton (UC San Diego) that the study's design assumed TIF-adjacent and comparison parcels were "exactly the same." Report co-author Matthew D. Wilson responded directly: the design instead follows each property against its own earlier values and tests whether TIF-adjacent and comparison parcels were moving on parallel trends before a TIF project, for every property type, rather than assuming the two groups were equivalent outright. Wilson also notes that the direction of the bias Fulton describes is not obvious either way: if TIF projects tend to be sited where values were already poised to rise, the report's estimates could overstate TIF's effect; if TIF tends to go into declining areas, the bias could run the other way — which is precisely why the pre-trend test, not an assumption, does the work.
• A journalist's rebuttal has been published and should be read as part of the public debate. Crain's Chicago Business columnist Greg Hinz published a piece headlined "The case against Chicago TIFs leaves out one inconvenient fact. They worked," arguing — per its own published summary — that TIF "has flaws" but "can and has done the job of growing Chicago's economy and neighborhoods, of which downtown is one," and calling to fix rather than eliminate the program. The column's supporting argument and evidence sit behind a subscription paywall; only its headline, summary line, and opening paragraph are accessible, so this is a description of the existence and stated position of a published counter-view, not an independent evaluation of its evidence.
• The residential spillover coefficient is a null assumption, not a measured zero. The report could not identify a causal residential effect because the residential pre-trend test failed (p ≤ 0.001); it sets that coefficient to zero as an agnostic choice rather than a finding that TIF has no residential effect, and tests the sensitivity of that choice through the four-scenario analysis above.
• The report evaluates Chicago's specific TIF design and implementation record, not TIF as a legal instrument everywhere; its authors attribute much of what they document — the downtown concentration, the weak oversight, the scale of the program relative to other major US cities — to choices made over four decades of Chicago administration rather than to TIF as such, and their recommendations are aimed at reforming those choices.

Bears On

• Concept: Land Value Capture — a large-scale, parcel-panel case study of a TIF program finding the value captured is overwhelmingly value the general tax base would have received anyway, joining the San Antonio and Wisconsin TIF material with a stronger causal design and a far larger dollar scale.
• Concept: Betterment Levy — a documented instance of the zone-bound, event-triggered capture problem the betterment-levy literature already flags: value captured within a district's boundary is unavailable to neighborhoods and public services outside it.
• Place: Chicago — a new, dated empirical layer on the city's land- and property-value history, distinct from the Hoyt land-cycle and Gaffney growth-spurt material already on that page.

See Also

• Land Value Capture
• Betterment Levy
• Chicago
• Land Value Tax
• Unearned Increment

Sources

1. Juan D. González, Matthew D. Wilson, Teresa Córdova & Jason "Jay" Campos, Chicago's Tax Increment Financing: Who Paid, Who Gained?, University of Illinois Chicago Great Cities Institute, August 26, 2026 (108 pp., linked as a PDF from the news-story page below). Full text read in full — used for the $16.6 billion/1984–2025 revenue figure, district counts, and 2024 fund balance (Executive Summary, p. I); the 13.7%/7.8%/18.6% tax-rate-shift figures, the $721M/$1.1B/$7.21B and $878/$6,616 dollar figures, the 1.8%/98.2% but-for/attribution figures, and the 51% downtown-spending and school/service-funding figures (Executive Summary, p. III); the $19.26 billion 2023 counterfactual gap and the structural explanation of the rate effect (Section 2, p. 26); the LaSalle Central/79th Street Corridor TIF comparison (Section 2, p. 24); the four-scenario sensitivity analysis, Tables 11–12, and the 17.3–19.3% 2023 robustness band (Section 2, p. 28); the "$55 of appreciation" and "paying for itself with money it didn't earn" quotations (Section 2, p. 30); the parcel-panel and pre-trend-testing methodology (Appendix B, p. 74); and the policy recommendations, including the LaSalle Central TIF non-extension recommendation (p. 70). B-claim (peer-institutional empirical report with a disclosed quasi-experimental method); Tier 1 per EDITORIAL §4c (university research institute).
2. UIC Great Cities Institute, "Chicago's Tax Increment Financing: Who Paid, Who Gained?" (news-story page, including Executive Summary reproduction, media-coverage links, and "A note on the research design" — report co-author Matthew D. Wilson's direct response to a methodological caution attributed to William Fulton, UC San Diego, in the New York Times' coverage). greatcities.uic.edu — read in full, last reviewed 2026-09-25 — used for the Wilson quotations on the pre-trend-testing design, the four published scenarios, and the 17-to-19-percent every-scenario tax-rate figure. B-claim, Tier 1 (report co-author's own statement, published by the institute).
3. Greg Hinz, "The case against Chicago TIFs leaves out one inconvenient fact. They worked.," Crain's Chicago Business, September 9, 2026. chicagobusiness.com — used only for the existence and headline framing of a published counter-view (the article's headline, dek, and opening paragraph). Full text not accessible at last review (2026-09-25; subscription paywall beyond the opening paragraph). Tier 2 per EDITORIAL §4c (journalist), cited as the origin of a published rebuttal, not as evidence on TIF's effects.