A joint resolution proposing an amendment to the Constitution of the State of Iowa relating to requirements for certain state tax law changes.

SJR 11 proposes an amendment to the Iowa Constitution that would change the requirements for passing certain state tax laws. It mandates that any bill increasing state individual or corporate income tax rates, or establishing a new state tax on income or reserves, must receive a two-thirds majority vote in both the House and Senate. This requirement does not apply to taxes imposed by local governments. The amendment also sets a one-year limit for legal challenges to the enactment of such tax bills. If passed by two consecutive General Assemblies, Iowa voters would consider this amendment in the November 2026 general election.