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I am not sure if the program is the issue or the way OH taxes is confusing you. When you go through the program, the first screen asks about allocations with the nonbusiness interest you mention. The second screen shows w2 wages total and you enter the portion of wages for just Ohio. There is a big difference between OH gross income and OH taxable income. Here are screen shots to show the difference in wages and how it shows on the OH return.
For the w2 causing issues, does it only list IL income in the state boxes? Ohio calculates tax as if you are a full year resident and then prorates it.
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