Recent Changes to Iowa’s Property Tax

Even with the extensive reforms as of late and the elimination of the county health levy, property taxes still remain a top concern of taxpayers with much work left to be done.


In 2013, the legislature enacted a comprehensive property tax reform measure directed at providing commercial property tax relief. Some of the major reforms of the legislation included: 

  • Establishing a new property tax credit for commercial, industrial, and railroad property classifications and creating a new multi-residential classification. 
  • Reforming the property tax rollback for residential and agricultural property from 4 percent to 3 percent, while reforming the rollback for commercial, industrial, and railroad property (95 percent for assessment year 2013 and 90 percent for 2014 and after). 
  • In fiscal year 2015 (FY15), the General Fund would “backfill” lost revenue from commercial property tax. Since FY17, this has been limited to $152 million directed back to cities and counties. 


While the 2013 property tax reform was extensive, it failed to address local government spending or property taxes associated with public education, the largest component of property tax bills. Furthermore, local governments engaged in “revisionist history” regarding the backfill, which was never intended to be permanent, arguing that it was an obligation of the state that could not repealed or phased out. The legislature in 2021 enacted a phase-out, but analysis demonstrated that many cities and counties did not even need the money because property tax revenue was escalating. 

The second-most-significant property tax reform legislation arrived in 2019. Responding to concerns over rising and complicated property taxes, the legislature passed a property tax accountability and transparency measure. Unlike the 2013 reform, this law attempted to deal with local government spending, creating a 2 percent “soft cap” that would apply to city and county budgets. 

The other pillars of the law included measures to increase accountability and transparency by: 

  • Requiring cities and counties (not school districts) to pass resolutions identifying the maximum amount of property tax dollars they would collect in the next fiscal year and holding a public hearing on that resolution. 
  • Calling for local elected officials to justify property tax increases with a specific explanation of their need for more funding. 
  • Giving local taxpayers the opportunity to submit objections to proposals at the public hearing. 


The law also required local governments to publish their budget notices. However, these notices often were not only difficult to find on city or county websites, but also very complicated. Similarly, although local governments were required to provide notice of their budget hearings, very few taxpayers attended them.  

 While the property tax accountability and transparency law was well intentioned, it failed to provide property tax relief. The 2 percent “soft cap” only takes a two-thirds majority vote of a city council or county supervisor board to override. In addition, the failure to include school districts made the reform ineffective. In terms of transparency, it failed to simplify the complexity of the property tax system, and the budget notices are too complex for most taxpayers to understand.  

Finally, the law failed to address local governments’ ability to take advantage of assessment windfalls. Too often taxpayers are told that the rates are going down, only to find that they are paying more in property taxes. This creates an “honesty gap” between local governments and the taxpayer.  

 The most recent reform of property taxes occurred in 2021. As part of a larger tax reform measure, the legislature not only phased out the backfill, but also eliminated the county mental health property tax levy. Iowa was the only state funding mental health through property taxes. Although some proponents assumed taxpayers would see relief with the elimination of this levy, 49 out of the 99 counties failed to pass along the savings to taxpayers.

When considering future property tax reforms, policymakers must address the total spending of local governments and increase transparency. Any reform that fails to address both problems will be a lost opportunity. The chart below gives a snapshot of the last half-century of local taxing entities’ property tax collections in Iowa. In total, the amount of property tax dollars collected from citizens has increased 523%, while inflation has only increased 416% over the same period, meaning total collections are $1.1 billion more today than they would have been if property taxes had only increased in line with inflation.

Source: Iowa Department of Management, Minneapolis Federal Reserve Bank

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