Photo of Mike Zimmer
D Iowa Senate · District 35 On the 2026 ballot

Sen. Mike Zimmer

Compare
Total votes
586
all sessions
Attendance
98%
12 missed
Near the chamber average
With party
94%
of cast votes
Lower than 96% of chamber peers
Bipartisan score
3%
crosses aisle rarely
Higher than 90% of chamber peers
Sponsored
53
bills & resolutions
Near the chamber average
Committees
5
assignments
53 bills and resolutions

Sponsored bills

Total
53
Primary
53
Co-sponsor
0
This page
53
matching current filters
Primary SF 2360
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to partial payments of property taxes and including applicability provisions.

Maddy summaryThis bill requires Iowa county treasurers to accept partial payments for property taxes as an alternative to annual or semiannual payments, rather than having the option to do so. It specifies that partial payments must be applied to each semiannual tax installment before due dates, with unpaid balances accruing interest and remaining balances carried forward. Taxpayers must request this option, and any interest earned on partial payments funds county administrative costs. The change applies to property taxes due in fiscal years starting July 1, 2026.

In committee Feb 24, 2026 0 co-sponsors
Primary SF 2244
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to the education savings account program, including the establishment and requirements of qualified nonpublic schools.

Maddy summarySF 2244 amends Iowa's education savings account program to establish clearer rules for qualified nonpublic schools and increase transparency. It requires these schools to meet accreditation standards, adhere to teacher licensing rules, and report student admissions/denials confidentially. The bill also mandates third-party administrators to submit detailed annual reports on fund spending (including educational materials and services) and undergo annual audits. School districts must notify families of approved students and report enrollment data, while contracts with vendors must include competitive bidding and limit fees to 3% of funds. These changes directly affect families using savings accounts, participating nonpublic schools, and third-party program administrators.

In committee Feb 16, 2026 0 co-sponsors
Primary SF 2241
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to charter school requirements, including reporting requirements, governance standards, financial accountability, and oversight by the state board of education.

Maddy summaryThis bill (SF 2241) sets new requirements for Iowa charter schools, directly affecting charter schools and their relationships with school districts. Key provisions include limiting charter schools to one per 10,000 students statewide per grade level (elementary/middle/high), mandating that governing boards include at least 50% parents of enrolled students and a school district representative, and requiring detailed annual reports on student enrollment, withdrawals, finances (including management fees), and academic performance. Charter schools must also comply with public fund restrictions and assessment reporting similar to traditional public schools. The state board of education will develop oversight standards to monitor academic, financial, and operational performance, with enhanced monitoring for underperforming schools.

In committee Feb 16, 2026 0 co-sponsors
Primary SF 2243
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to the operation of state government, including the commencement of audits, information made available to the auditor of state, and disputes between governmental agencies.

Maddy summarySF 2243 modifies Iowa's audit and transparency rules for state government. It clarifies that the auditor of state may access confidential agency information (like health records or tax data) but must maintain confidentiality and cannot access individual tax returns or disease reports identifying specific people. The bill requires audit reports to be public unless they contain protected information (like personal health data), and replaces previous dispute resolution rules between agencies with a new arbitration process requiring a 3-member board appointed by the involved agencies. It also repeals outdated provisions about when audits begin and removes a 60-day deadline for arbitration decisions. The changes primarily affect state agencies, the auditor's office, and the public's access to government financial information.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2266
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to clean water monitoring by requiring agencies to publish disaggregated data, including data associated with contributions by nonpoint sources.

Maddy summarySF 2266 requires Iowa's Department of Natural Resources and the Division of Soil Conservation and Water Quality to publish disaggregated water quality data online, specifically showing contributions from nonpoint sources like agricultural runoff to designated water bodies. This affects agricultural landowners and operators near water sources, as the bill removes confidentiality protections for data identifying their operations that contribute to water quality issues. The key mechanism mandates agencies to break down aggregated monitoring data into detailed reports by water classification, updating these publicly on a shared website. This change makes previously confidential data about farm-related water pollution contributions publicly accessible.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2245
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to audits of governmental subdivisions by the state auditor concerning suspected embezzlement, theft, or other significant financial irregularities.

Maddy summarySF 2245 requires Iowa governmental subdivisions (like cities, counties, school districts, and hospitals) to cooperate with the state auditor when suspected embezzlement, theft, or major financial irregularities involving public funds are reported. It mandates that the subdivision reimburse the state auditor for investigation costs, but only up to the amount of misused public funds as determined by the auditor. The bill establishes a clear process where the auditor decides whether to conduct further investigations after initial notification. This directly affects local government entities handling public funds by creating a defined reimbursement mechanism for financial misconduct probes.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2272
In committee · Iowa Senate · Lead sponsor
A bill for an act providing for a veterans’ benefits and services poster for employers to display in the workplace.

Maddy summarySF 2272 requires Iowa employers with 50+ full-time employees to display a veterans' benefits poster in the workplace. The poster, created by the Department of Inspections, Appeals, and Licensing in coordination with the Department of Veterans Affairs, must include key resources like mental health services, education/training programs, tax benefits, driver’s license assistance, unemployment insurance eligibility, and legal services. Employers must display the poster prominently where employees can easily see it. This bill directly affects businesses meeting the 50-employee threshold and aims to make veterans' support resources more accessible.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2267
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to clean water projects and programs by requiring agencies to publish data regarding progress in meeting certain benchmarks.

Maddy summarySF 2267 requires Iowa's Department of Natural Resources and the Division of Soil Conservation and Water Quality (within the Department of Agriculture) to publish online, regularly updated reports tracking progress on state-funded clean water projects. These reports must include water quality data collected before, during, and after projects, specifically for initiatives monitoring surface water to establish benchmarks for goals like reducing pollutants or runoff. The bill applies to any state-funded program measuring nutrient levels, stormwater, or runoff, making the data publicly accessible via a joint agency website. This focuses on transparency for projects already authorized under existing water quality laws, without creating new programs or mandates.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2249
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to customer classes for large energy use facilities, and including applicability provisions.

Maddy summaryThis bill creates a separate billing class for large energy use facilities in Iowa that consume 20 megawatts or more (primarily industrial facilities under NAICS code 518210). It requires utilities to establish distinct rates for these facilities that directly assign their service costs and prevent shifting those costs to other customers. The utilities commission must review proposed rates to ensure they don’t unfairly increase costs for other customers or undermine grid reliability. The rules apply only to facilities built or expanded on or after January 1, 2027.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2239
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to a family leave and medical leave insurance program that provides for paid, job-protected leave for certain family leave and medical leave reasons for eligible employees of specified employers.

Maddy summarySF 2239 establishes Iowa's first state-run paid family and medical leave insurance program. It requires private employers with 10+ employees and all public employers to provide eligible workers with up to 12 weeks of paid leave for family reasons (like bonding with a newborn or caring for a sick family member) and up to 12 weeks for medical reasons (an employee's own serious health condition). To qualify, employees must have worked 1,250 hours over the past 12 months for their employer. The program, administered by the Iowa Department of Workforce Development, allows a combined maximum of 16 weeks of paid leave for both family and medical needs within any 12-month period.

In committee Feb 12, 2026 0 co-sponsors
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