Dubuque staff warn Senate File 2472 could squeeze city property‑tax revenue and reshape TIF

Jennifer Larson, the City of Dubuque’s chief financial officer, told the City Council during a work session that Iowa Senate File 2472 will “make significant changes to the Iowa’s property tax system and to the financial rules that govern cities.” Larson said the new law imposes a 2%‑style cap on general‑fund levy growth beginning in fiscal year 2028 and adds a second test after 2031 tied to the statutory $8.10 levy rate.

Larson listed multiple provisions that will affect local budgets: the phaseout of state replacement payments to commercial and industrial property; a change of the homestead benefit from a state‑paid credit to a locally applied exemption (estimated to reduce Dubuque’s taxable assessed value by roughly $223 million); new limits on unassigned general‑fund reserves (35% of current‑year expenditures unless an exception applies); tighter rules on property‑tax‑supported debt for operating expenses; and narrower TIF collection and capture rules. Larson said those items “interact” and that staff are awaiting an implementation guide from the Iowa Department of Management to resolve outstanding questions about measurement and application.

City Manager Mike Van Milligen and Larson both told the council the most urgent open questions include whether the trust‑and‑agency levy (used for employee benefit costs) will be excluded from the 2% cap and how the state will treat releases of value from TIF districts. Van Milligen said the trust‑and‑agency question is “key for us” because some cities rely on that levy as a safety valve and because its treatment will materially affect how the city balances operating and benefit costs.

Larson gave two concrete local figures: an estimated gross revenue loss of about $2,240,000 from the homestead exemption when calculated using Dubuque’s fiscal‑year‑27 tax rate, and the roughly $223,000,000 reduction in taxable assessed value tied to the homestead exemption. She warned the full fiscal impact will unfold over several years and depend on the Department of Management’s implementation guidance.

Why it matters: Councilors said the changes will complicate budget assumptions as departments prepare FY28 budgets this fall. Staff recommended continued collaboration with bond counsel, municipal finance professionals and state agencies, and flagged that some policy choices—particularly how the city uses TIF and whether it shifts benefit costs into trust and agency levies—may require explicit council direction.

What happens next: Staff will wait for the Department of Management guidance, refine Dubuque‑specific projections, and return to council with more detailed budget and policy options once the state clarifies calculations and exceptions.