Ohio Tax Extension Requirements and Deadlines: Your Guide

Hey, Ohio taxpayers!

Tax extensions can be tough, but we’re here to help. Whether you’re waiting on documents or need more time to get your taxes in order, understanding Ohio’s extension process can save you from stress and penalties.

In this post, we’ll cover everything you need to know about Ohio extensions.

We’ll talk about whether you need a state extension if you’ve already filed for a federal one, the deadlines to keep in mind, the forms to fill out, and the penalties for late filing and payment. 

Grab a cup of coffee, and let’s get into the nitty gritty of extending your filing deadline in Ohio. 

By the end, you’ll be an extension master on top of your game. 

Let’s get started!

Do I Need to File a Separate Tax Extension for Ohio If I Already Filed a Federal Tax Extension?

No, Ohio will honor your federal extension (IRS Form 4868).  No separate extension will be needed for the state. 

When you complete your Ohio IT 1040, you will simply need to check the box indicating you filed for a federal extension and include a copy of FORM 4868 or IRS acknowledgment and/or your extension confirmation number with your Ohio return. 

This will also extend the filing deadline for your school district as well (SD 100), if applicable.

When is the Deadline to File a Tax Extension for Ohio?

The deadline will align with your federal six-month extension of October 15th. Ohio will honor your federal tax extension deadline, and no further forms will need to be submitted. Remember that states have varying rules.

How Do I File an Ohio Tax Extension?

Ohio will grant you an Ohio state tax extension only if you have a federal tax extension. You must include a copy of IRS Form 4868 or IRS acknowledgment and/or your extension confirmation number, and check the box on your Ohio IT 1040 indicating you filed for a federal extension. No additional forms will be required at the state level. 

Link to all Ohio Forms.

For electronic filing, go to Ohio Tax eServices

Do I Need to Pay My State Taxes When I File a Tax Extension for Ohio?

Yes, you must pay any estimated state taxes due by April 15th to avoid penalties and interest. You can pay online using Ohio Tax eService. If mailing a check, us the Ohio Universal Payment Coupon (OUPC) and include your SSN or FEIN with the tax year written in the memo line.

What Are the Penalties for Filing My Taxes Late in Ohio?

The penalty for filing your Ohio state taxes late is typically 5% of the tax due for the first two months and an additional 5% for each subsequent month, up to a maximum of 25%. Filing an extension can help you avoid these penalties.

Example: If you owe $1,000 in Ohio state taxes and file your return three months late without an extension:

• First two months: 5% of $1,000 = $50 per month
• 2 months x $50 = $100
• Third month: Additional 5% of $1,000 = $50

The penalty for three months late is $100 + $50 = $150. So, after three months, your total penalty would be $150 on top of the $1,000 tax due, making your total amount owed $1,150.

What Are the Penalties for Paying My Taxes Late in Ohio?

The penalty for paying your Ohio state taxes late is 0.5% of the unpaid tax per month, up to a maximum of 25% of the tax due. Interest will also accrue on any unpaid taxes from the original due date of April 15th until you submit your payment.

Example: If you owe $1,000 in Ohio state taxes and pay your taxes five months late, the penalties and interest would be calculated as follows:

• Monthly penalty: 0.5% of $1,000 = $5 per month
• 5 months x $5 = $25. Additionally, interest will accrue on the unpaid taxes.
• The interest rate for late payments is set annually by the Ohio tax Commissioner. For tax year 2024, the rate is 8% per annum. This rate may change for 2025. Please refer to the Ohio Interest Rates Page for the most current late payment interest rate.
• Monthly interest: 8/12 = 0.6667% per month;┬а 0.6667% of $1,000 = $6.67 per month
• 5 months x $6.67 = $33.35

Total penalty for five months late = $25 Total interest for five months late = $33.35 Total additional cost for five months late = $25 (penalty) + $33.35 (interest) = $58.35 So, after five months, your total additional cost would be $58.35 on top of the $1,000 tax due, making your total amount owed $1,058.35.

Check out the Ohio Interest Calculator, which will provide you with the most accurate information.

How Do I Know Whether I Should File a Tax Extension for Ohio?

Consider filing a tax extension if you need more time to gather documentation or complete your return accurately. To minimize penalties, make your estimated tax payment by the original deadline. Consulting with a tax professional can also provide guidance.

Is There Anything Else I Need to Know About Filing a Tax Extension for Ohio?

Stay informed about any changes in Ohio tax laws or deadlines. Always verify information with the Ohio Department of Taxation and consider setting reminders for important deadlines.

Work with Our Experts!

You may not need to file a tax extension for Ohio, but if you want extra time to file taxes, you'll need to request a federal tax extension. We can help. Click here to get started. 

Ohio Tax Revenue Overview

Revenue Sources Breakdown

In the latest fiscal year, Ohio's tax revenue totaled approximately $29.58 billion, derived from various sources:

• Sales & Tax: $13,483 million - The largest contributor, accounting for nearly 46% of the total revenue.
• Individual Income Tax: $10,797 million - The second largest source, contributing around 36%.
• Commercial Activity Tax: $2,152 million - Approximately 7% of the total.
• Cigarette & Other Tobacco Tax: $827 million - Making up about 3%.
• Non-Tax Revenue: $668 million - Around 2%.
• Other Taxes: $1,656 million - Roughly 6%.

This distribution shows the reliance on sales and individual income taxes as primary revenue sources, with commercial activity and other specific taxes playing smaller roles.

General Revenue Fund Tax Revenue (2015-2023)

The General Revenue Fund Tax Revenue data from 2015 to 2023 shows notable trends:

• 2015-2019: Gradual increases, with an average annual growth rate of approximately 3.2%.
• 2020: A decline of 3.7%, likely influenced by economic disruptions.
• 2021: A significant rebound with a 17% increase, reflecting recovery efforts.
• 2022-2023: Continued growth, though at a slower rate (6.4% in 2022 and 2.7% in 2023).

This trend highlights the resilience and gradual recovery of Ohio's revenue system, which has adapted to economic fluctuations and external challenges.

Summary

Understanding Ohio’s tax extension requirements can help you avoid penalties and ensure compliance. Always check the Ohio Department of Taxation for the most accurate and up-to-date information.

Don’t Let Deadlines or Penalties Catch You Off Guard

Start your Ohio tax extension today—file confidently and stay compliant. Get started now!