Missouri Voters Decide on Amendment 5 Income Tax Overhaul Amid Dispute Over Sales Tax Scope

Missouri voters will decide the fate of Amendment 5, which would abolish state income tax by allowing lawmakers to impose new sales taxes on an undefined range of goods and services. The measure has sparked intense debate over whether the amendment's language provides adequate safeguards against expansive taxation, with supporters claiming it would return billions to households annually and opponents characterizing it as an open authorization for the state's largest tax increase.

The Amendment's Core Proposal

Amendment 5 would amend the Missouri Constitution to permit state legislators to "impose taxes on transactions involving any goods and services." The constitutional language contains no enumerated exceptions or limitations on what products or services could be taxed. Governor Mike Kehoe, a prominent supporter, has stated his intention to limit new sales taxes to digital goods such as streaming services, explicitly ruling out applications to agriculture, healthcare, or real estate transactions. However, these assurances remain outside the formal amendment text.

The Disagreement Over Protections

Scott Charton, spokesperson for Protect Majority Rule Missouri, rejected the governor's verbal commitments as insufficient. "Governor Kehoe may have had good intentions about wanting certain exceptions for certain things, but the legislature didn't give him that," Charton said. "The legislature sent to the ballot, and what the people are voting on, it's just total vagueness. It's a blank check for legislators." Missouri realtors joined opposition efforts, warning that real estate transactions—including home purchases—could face taxation under the amendment's expansive wording, potentially undermining homeownership affordability.

Kehoe countered that the measure would operate on a revenue-neutral basis, generating funds to replace lost income tax revenue without cutting essential services or expanding overall state funding. He estimated the plan would place approximately $9 billion annually back into household budgets, with the average Missouri family receiving roughly $3,000 in tax relief. The governor characterized opposition claims about education and healthcare impacts as "scare tactics," maintaining that the amendment protects those sectors by design, even if not by explicit language.

Electoral Significance

The amendment represents a significant test of Missouri's tax policy direction. Voters faced the question of whether to authorize constitutional reform on taxation based on gubernatorial assurances that lack codified legal force, or whether the amendment's open-ended language warranted rejection due to its potential for unintended or expanded application. The measure's outcome will determine whether Missouri proceeds with eliminating income tax through an alternative revenue structure.