Introduction
Ohio's Form IT 1040 is the state's individual income tax return for tax year 2025. It is not the federal Form 1040, and it does not cover local school district tax, which has its own return.
Ohio opened filing on January 26, 2026, with a return and payment deadline of April 15, 2026.
Many filers stumble on the same points: residency status, reciprocity rules, school district codes, and exemption figures. The Ohio return starts from federal adjusted gross income, then applies Ohio-specific changes.
This guide covers the full workflow: confirm you must file, gather records, use the final 2025 forms, complete the return, submit and pay, then keep your records and track your refund. VJM Global supports US Form 1040 filers, and a short section near the end covers when outside help makes sense.
Key Takeaways
- Use the final 2025 IT 1040 and instruction booklet, not a 2024 or draft form.
- Residency, part-year status, Ohio-source income and reciprocity decide who files.
- A school district return (SD 100) may be required in addition to the IT 1040.
- The federal $6,000 senior deduction is not an Ohio line item.
- Ohio's free OH|TAX eServices portal handles individual returns.
What Is Form IT 1040 and Who Must File It?
Residency and Ohio-source income
Form IT 1040 is Ohio's individual income tax return. You use it to report Ohio taxable income, claim credits and withholding, and calculate tax due or a refund.
Every Ohio resident and part-year resident is subject to Ohio income tax. A nonresident with Ohio-source income generally must file too.
Ohio treats "domicile" and "resident" as the same thing. Owning or renting an Ohio home generally creates a presumption of residency.
| Status | Meaning |
|---|---|
| Resident | Domiciled in Ohio |
| Part-year resident | Resident for part of the year, including a permanent move in or out |
| Nonresident | Resident of another state all year |
Ohio-source income that needs a closer look includes:
- Wages for work performed in Ohio
- Ohio lottery, casino and sports-gaming winnings
- Income or gain from Ohio real property
- Sole-proprietorship or pass-through income from Ohio business activity
Ohio lists exceptions to the filing requirement. You need not file if:
- Ohio AGI is zero or less
- Your exemption equals or exceeds Ohio AGI
- Credits wipe out the liability and you owe no school district tax
The instructions still recommend filing when federal AGI exceeds $28,450, so you avoid a delinquency notice. That figure is a recommendation, not a statutory threshold.
Reciprocity and filing exceptions
Residents of Indiana, Kentucky, Michigan, Pennsylvania and West Virginia who live there all year generally need not file in Ohio when their only Ohio income is wages. Other Ohio income, such as property or business income, still triggers a return.
For 2025, Ohio discontinued Form IT NRS. Eligible taxpayers claim the nonresident presumption by checking the statement on the IT 1040. Employees give their employer Form IT 4 so the home-state tax is withheld instead.
Related Ohio filings
Form SD 100 is the separate school district return. You generally file it if you lived in a taxing district, earned income there and owe district tax. You may owe SD tax even when you owe no Ohio income tax. In that case, file both returns.
Other 2025 forms include:
- Schedule of Adjustments
- Schedule of Business Income
- Schedule of Credits
- Schedule of Dependents
- Schedule of Ohio Withholding
- Payment coupon OUPC
- IT NRC and IT RC for credits tied to income taxed by other states
Prepare Before Completing Your 2025 Ohio IT 1040
Get the correct form and official instructions
Start at the Ohio Department of Taxation's forms page at tax.ohio.gov. Check the tax year and revision date. The IT 1040 is listed as tax year 2025, revised 12/25, and the instructions are revised 01/26.
Ohio released drafts in October 2025, so make sure you are not working from one.
The OUPC coupon replaces the older IT 40P and IT 40XP coupons. Do not use the old ones.
Gather records and account information
Collect:
- Your federal return or federal income figures
- W-2s and 1099s
- Records of Ohio withholding and estimated payments
- Social Security numbers and dependent details
- Your address and school district code
- Bank details for direct deposit
Add supporting records for self-employment, investments, retirement income, property income, gambling winnings or multi-state earnings. If no W-2 arrives by February 15, contact the employer. If none is issued, Ohio instructs you to submit year-end pay stubs.
Review 2025-specific rules before entering figures
Ohio's top nonbusiness rate for 2025 is 3.125%, following HB 96. Business income is taxed at 3%, with a deduction capped at $250,000 for single and joint filers or $125,000 for married filing separately.
| Taxable nonbusiness income | 2025 tax |
|---|---|
| $26,050 or less | $0 |
| Over $26,050 to $100,000 | $342.00 plus 2.75% of the excess over $26,050 |
| Over $100,000 | $2,394.32 plus 3.125% of the excess over $100,000 |
The printed formulas do not join arithmetically at $100,000. Follow the form's own instructions rather than adjusting either figure.
The $6,000 senior deduction. That benefit is federal. It appears on Schedule 1-A and Form 1040 line 13b. Ohio's schedule has no separate $6,000 senior entry.
Ohio offers a distinct $50 senior citizen credit for eligible filers 65 or older, subject to an income condition in the instructions. Other credits worth checking include:
- Retirement income credit of up to $200
- Homeschool expense credit of up to $250 per qualifying student
Complete the 2025 Ohio IT 1040 Step by Step
Enter taxpayer information and filing status
Use the same filing status as your federal return. A joint federal return generally means a joint Ohio return. On a married-filing-separately return, enter your spouse's SSN. Joint returns have separate residency selections for each spouse.
For the school district code, enter the district where you lived most of the year. Full-year nonresidents enter 9999. Ohio's school district finder tool gives the number.
Report income and determine Ohio income
The return begins with federal AGI, then applies Ohio additions and deductions through the Schedule of Adjustments. Federal and Ohio taxable income are not identical. Two examples:
- Interest and dividends from other states' governments are an Ohio addition.
- Taxable Social Security benefits are an Ohio deduction.
Self-employment and pass-through income flow through the Schedule of Business Income. Part-year residents and full-year nonresidents use IT NRC. Ohio residents taxed elsewhere use IT RC for the lesser of the tax paid or the Ohio tax on that income.
Claim exemptions, adjustments and credits
Personal, spousal and dependent exemptions depend on Ohio modified AGI. The final booklet lists these amounts:
| Ohio MAGI | Booklet exemption |
|---|---|
| $40,000 or less | $2,400 |
| $40,001 to $80,000 | $2,150 |
| $80,001 to $749,999 | $1,900 |
| $750,000 or more | $0 |
ORC 5747.025 lists amounts $50 lower in the first three bands than the booklet figures above. That difference between official sources is unresolved. Confirm the figure against the instructions Ohio publishes when you file, and ask the Department of Taxation if it matters to your result.
Other 2025 items include the educator expense deduction ($300), an expanded military pay deduction, a medical savings account deduction capped at $6,003, and Ohio 529 contributions up to $4,000 per beneficiary.
Calculate tax, withholding and the final result
The line order runs from federal AGI to Ohio AGI, exemptions, tax base, tax, credits, withholding, payments, and finally refund or amount due. Use whole dollars.
Report only Ohio state withholding on the Schedule of Ohio Withholding. Other-state box 17 amounts do not count. W-2 boxes 19 and 20 (sometimes box 14) show school district withholding, which belongs on SD 100. If your W-2 does not match your records, resolve it with your employer before filing.
Review all schedules and supporting documents
Before submitting, check:
- Signatures for you and your spouse
- Dependent and spouse details
- All required schedules
- Legible W-2/1099 copies for paper returns claiming withholding
- Payment information
- Whether SD 100 is also needed
Submit, Pay, Extend, or Amend Your Return
File electronically
Ohio's free OH|TAX eServices portal accepts IT 1040 and SD 100 returns. Eligibility conditions include an SSN or ITIN, an OHID, and prior Ohio return history or a qualifying Ohio ID. Approved commercial software is also available, but fees may apply.
Review the summary before signing, save the acknowledgment, and only use tax.ohio.gov. E-filed returns do not send W-2s at submission.
Mail a paper return
Mail addresses depend on whether you owe:
- Return with payment: Ohio Department of Taxation, P.O. Box 2057, Columbus, OH 43270-2057
- Refund or no payment: P.O. Box 2679, Columbus, OH 43270-2679
- Coupon-only payment: P.O. Box 182131, Columbus, OH 43218-2131
Confirm these against the final booklet.
Pay any balance due
OH|TAX electronic check from a bank account has no fee. Cards carry a third-party convenience fee. For checks or money orders, make them payable to Ohio Treasurer of State and send them with the OUPC coupon. Payment is due April 15, 2026.
Extensions and amended returns
Ohio honors a qualifying federal Form 4868, with no separate Ohio request. Check the extension box and provide your federal confirmation.
The extended filing date is October 15, 2026, but payment is still due April 15, 2026, and interest runs from the unextended date. Ohio's 2026 interest rate is 7%.
To amend, file a new IT 1040, check "Amended Return," and attach Ohio IT RE (not an IT 1040X) with supporting records. If an IRS adjustment affects Ohio, file within 90 days after the IRS finishes its review.
Track the refund and retain records
Use Ohio's Check My Refund Status tool. You need your SSN, account type, requested refund amount and tax year. E-filed returns may appear after 2 to 3 days.
Most refunds issue within 60 days, and Ohio asks you to wait 120 days before contacting it. Debts can trigger an offset.
Ohio recommends keeping returns, schedules, income statements and payment records for at least four years. The IRS's general guidance is three years, longer in some cases.
Avoid Common Errors and Know What Happens After Filing
Final accuracy checks
Common slips include:
- Using the wrong tax year
- Confusing IT 1040 with federal 1040
- Entering non-Ohio withholding
- Leaving out a schedule
- Using the wrong school district number
- Forgetting a signature
Errors delay processing, and e-filed returns may be rejected. Compare your Ohio return against the federal return and source documents, but do not copy federal figures into lines that need an Ohio adjustment.
Be alert to scams too. In an April 2026 notice, Ohio warned of fake refund-pending messages and lookalike websites. The Department says it does not use text or social media to request personal or financial data.
When professional assistance may be appropriate
Consider a preparer if you have:
- Multi-state income
- Nonresident filing
- Business or pass-through income
- Amended returns
- Complex credits or large withholding discrepancies
Ohio can answer some tax questions but cannot prepare returns or recommend a preparer.
VJM Global prepares US Form 1040 returns along with federal and state business filings, following IRS protocols. It is a private professional services firm, not an Ohio agency or free-filing portal.
Frequently Asked Questions
What is the Ohio IT 1040 form?
It is Ohio's 2025 individual income tax return for residents, part-year residents and nonresidents with Ohio-source income. It is separate from the federal Form 1040.
Do I need to file a state tax return for Ohio?
Residents and part-year residents are generally subject to Ohio tax, and nonresidents file for Ohio-source income. Exceptions include reciprocity for wage-only income. School district tax can require filing separately.
What are the instructions for submitting the Ohio IT 1040 form?
Gather records, use the final 2025 forms, complete the schedules, then e-file or mail the return with your signature and payment. Keep records at least four years. Find the booklet at tax.ohio.gov.
Can I file my Ohio state taxes for free?
Yes. Ohio's OH|TAX eServices is free for eligible individual filers. Approved commercial software may charge, so confirm fees first.
What is the exemption amount on the Ohio IT 1040 form?
The final booklet lists $2,400, $2,150 or $1,900 depending on Ohio MAGI, and $0 at $750,000 or more. The statute text differs by $50 in three bands, so verify with the Department.
What is the official website for Ohio state taxes?
The Ohio Department of Taxation at tax.ohio.gov. It carries forms, payments, refund status and contact details. Confirm the address is an official Ohio government domain.
