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Ohio Final Tax Returns After You Sell a Business

Updated October 16, 2026 by the Columbus Business Brokers Desk

Selling a company starts a short clock on several Ohio tax filings. Miss one and you can owe penalties, or leave part of your price sitting in escrow.

Columbus Business Brokers Desk put this list together so you can see every return in one place, with the deadlines that matter.

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If you read nothing else

  1. Final Ohio sales tax and employer withholding returns are due within 15 days of the sale
  2. Unpaid amounts on both come due right away, and buyers hold back money until they are cleared
  3. The commercial activity tax only matters if your taxable receipts are above the state's exclusion, $6 million since 2025
  4. Workers' comp, unemployment and city income tax accounts each need their own wrap up
  5. Put every deadline on the closing calendar before you sign the purchase agreement

The Two 15 Day Deadlines

Ohio gives sellers very little time on the two state taxes most companies collect.

For sales tax, a sale of the business makes anything you owe due immediately, and the final return is due within 15 days of the sale.

For state income tax withheld from employee paychecks, the rule is the same: the amount owed is due right away and the final withholding return is due within 15 days.

Both rules also tell the buyer to hold back enough purchase money to cover what you owe until you show a receipt or a certificate from the Tax Commissioner. Our guide to sales tax successor liability explains the holdback in detail.

Fifteen days is about the time it takes to stop answering congratulations texts. Plan the returns before closing, not after.

Does the Commercial Activity Tax Still Apply to Me?

Maybe not. Ohio's commercial activity tax, the CAT, is a tax on gross receipts. Recent changes raised the amount of receipts that are excluded from it.

Since tax year 2025, companies with $6 million or less in taxable gross receipts for the year are not subject to the CAT. Many companies our partner sells fall below that line, and many have already cancelled their CAT accounts.

If yours is still open, you'll need to close it. The state lets you cancel through the Ohio Business Gateway or by checking the box on your final CAT return.

Larger companies that still owe the CAT face their own successor rule.

When a seller disposes of at least 75 percent of its assets outside the normal course of business, the tax comes due and the buyer has a similar duty to hold back purchase money, with a 45 day window instead of 15.

A Return by Return List

Here is what most Central Ohio sellers in an asset sale should expect to file or close. Your CPA may add more for your industry.

  • Final Ohio sales tax return, within 15 days, then close the vendor's license
  • Final Ohio employer withholding return, within 15 days, plus year end wage reporting
  • Final CAT return and account cancellation, only if the account is still open
  • School district income tax withholding, if your employees live in a taxing district
  • Final city income tax returns for withholding and net profit
  • Workers' comp payroll report and account wrap up with the BWC
  • Final unemployment contribution reports with ODJFS

The Accounts That Can Follow the Business

Two of those accounts behave differently from the tax returns. In many Ohio sales, your workers' comp experience and your unemployment experience move to the buyer instead of simply closing.

That affects the buyer's future premiums and contribution rates, so buyers ask about your claims history early. Read the guides to the BWC account transfer and the unemployment account transfer before you sit down with a buyer.

City Income Tax Has Its Own Rules

Almost every Ohio city and village collects its own income tax. Columbus, Dublin, Westerville, Hilliard and Grove City each have one.

Your company likely has a withholding account and a net profit account with each city where it operates. Each one needs a final return. Our guide to the Columbus income tax final return walks through the Columbus version.

Stock Sales Are Different

In a stock or membership interest sale, the entity doesn't stop doing business. The buyer takes it over with its tax accounts still open, so there are usually no final returns for the company itself.

The buyer will still want proof the accounts are current, and the purchase agreement will spell out who pays for any tax periods before closing.

Build the Closing Calendar Early

The simplest protection is a calendar. As soon as you sign a letter of intent, sit down with your CPA and list every account the company holds, its filing frequency, and the final return each one needs.

Then put the 15 day deadlines on the calendar from the expected closing date. If the closing moves, move them. Our guide on how to sell a business in Columbus shows where these filings fit in the overall timeline.

This guide is general information, not tax advice. Rates, thresholds and forms change, so confirm the current rules with your CPA or the Ohio Department of Taxation.

For a private estimate of what your company could sell for, use the value form or call (614) 555-0148.

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