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HSB 304

A bill for an act modifying property tax calculations, and including applicability provisions.

2025-2026 Regular Session

Iowa HSB 304 modifies property tax calculation methods, potentially shifting tax burdens across residential, commercial, and agricultural properties statewide.

Subcommittee: Kaufmann, Hermanson and Jacoby.
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Bill Summary · HSB 304

Legislative bill overview

HSB 304 modifies how property taxes are calculated in Iowa, though the specific calculation changes are not detailed in the available information. The bill includes applicability provisions that likely define when and how these modifications take effect. As of early March 2025, the bill has been referred to the House Ways and Means Committee for initial review.

Why is this important

Property tax calculation changes directly affect how much homeowners, agricultural landowners, and businesses pay annually in taxes. Even modest modifications to assessment formulas or valuation methods can shift significant tax burdens across different property classes or regions. This is one of the most visible and financially consequential policy areas for Iowa residents.

Potential points of contention

  • Tax burden redistribution: Changes to calculation methods may shift taxes from one property class (residential, commercial, agricultural) to another, creating winners and losers
  • Local revenue impact: Modified calculations could reduce or increase tax revenue for counties, schools, and municipalities that depend on property tax bases
  • Implementation timeline: The applicability provisions will be critical—retroactive application versus prospective-only implementation significantly affects affected parties

Compiled from official sources — confirm details with the bill’s official record.

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