Ohio is one of the few states where school districts can levy their own income tax. Approximately 200 of Ohio’s 600+ school districts impose an income tax, with rates ranging from 0.25% to 3.0%. Employers must withhold school district income tax in addition to state and municipal taxes. This guide explains how the system works.
Use Ohio’s official “The Finder” tool to look up school district codes and tax rates by address
How Ohio School District Tax Works
Ohio school district income tax is a residence-based tax – meaning it’s based on where the employee lives, not where they work. If an employee lives in a taxing school district, the employer must withhold at that district’s rate regardless of where the employee’s workplace is located.
Two Types of School District Tax
Ohio school districts use one of two tax base methods. The method matters because it determines what income is subject to the tax:
Traditional Tax Base
Based on Ohio adjusted gross income (same as state return). Includes wages, salaries, tips, business income, retirement income, and other income sources. Most school districts use this method. Employers withhold based on ALL compensation.
Earned Income Tax Base
Based on earned income only – wages, salaries, tips, and net self-employment income. Does NOT include retirement income, investment income, or other unearned income. Employers withhold based on wages/salary only (same treatment either way for W-2 income).
School District Codes
Each taxing school district has a unique 4-digit code. Employers need this code for withholding registration and quarterly reporting. The code appears on Form SD-100 (school district income tax return) and the employee’s IT-4 withholding form.
Employer Withholding Requirements
| Requirement | Details |
|---|---|
| Registration | Employers must register for school district withholding through the Ohio Business Gateway (OBG) – separate from state withholding registration |
| Employee Form | Employees complete Form IT-4 to declare their school district of residence. If the district levies a tax, the employer must withhold. |
| Filing Frequency | Same schedule as state withholding (quarterly, monthly, or semi-weekly depending on liability amount) |
| Reporting Form | Form SD-141 (employer school district withholding quarterly return) |
| Annual Reconciliation | Form SD W-2 – filed with SD-141 for Q4, reconciling annual withholding |
| Rate Changes | School districts can enact or change rates via voter levy. Changes typically take effect January 1. Check rates annually. |
Ohio Municipal Tax vs. School District Tax
Employers operating in Ohio often need to manage both systems simultaneously. Here’s how they differ:
| Feature | Municipal Income Tax | School District Income Tax |
|---|---|---|
| Based On | Work location | Residence |
| Number of Jurisdictions | ~600 municipalities | ~200 taxing school districts |
| Rate Range | 0.5% – 3.0% | 0.25% – 3.0% |
| Administered By | RITA, CCA, or individual cities | Ohio Dept of Taxation |
| Lookup Tool | The Finder (Municipal) | The Finder (School District) |
| Credit for Other Taxes | Many cities allow credit for taxes paid to other cities | No credit system between districts |
Quick Reference Links
Information reflects 2026 tax year. School district rates can change annually via voter-approved levies. Always verify current rates using Ohio’s “The Finder” tool. This guide is for informational purposes only and does not constitute tax or legal advice.