When you allocate income for part-year returns, you have to allocate each segment of income such as Wages, Business Income, Rental Income, Gambling Income, etc. You might not have all of these categories. The screen should show you the total for each category and then you can tell TurboTax how much of that income should be allocated to IL. If you have total wages of 30K, you might indicate 20K of that belongs to IL. But if you have no business income or rental income, you can only allocate $0.
Did you receive any income from rental property or on Form 1099? Form 1099 income is usually business income on Schedule C. Your state return would ask you how much of this business income belongs to IL. If you don't have business income or your business income was earned in another state, you should allocate $0 to IL.
How to allocate income?
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