Iowa Voters to Decide on Amendment 1 Tax Increase Threshold
Voters in Iowa, including the Cedar Rapids-Waterloo-Iowa City & Dubuque region, will decide on Election Day on Amendment 1. If approved, the amendment would require a two-thirds supermajority vote in both legislative bodies to increase the state's individual or corporate…

Cedar Rapids Waterloo Iowa City & Dubuque, IA, October 18, 2026 —
Iowa voters, including those in the Cedar Rapids-Waterloo-Iowa City and Dubuque region, will decide on Election Day whether to approve Amendment 1. The proposal would change the vote required for the state to increase individual or corporate income taxes.
If approved, Amendment 1 would require a two-thirds supermajority vote in each of the state’s two legislative bodies for an increase in either type of income tax. The measure concerns the approval threshold for tax increases; the summary provided does not specify any proposed tax-rate change.
The available information does not identify the date of Election Day, provide the amendment’s full text, or describe how the proposal would affect other taxes or state budget decisions. It also does not include arguments from supporters or opponents, or details about the amendment’s legislative history. Those details were not provided.
The outcome will determine whether the two-thirds requirement becomes part of the process for increasing Iowa’s individual or corporate income tax. Until voters decide, the proposal remains subject to the Election Day vote.
Story summarized from the original created by Jocelyn Peshia on www.kcrg.com, see more information here.
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