There is a minimum amount of income under which you are not required to file a federal or Illinois income tax return. For the federal return, you should use this tool provided by the IRS to determine if you need to file, as the minimum income may be only one factor that you need to consider: Do I need to file a tax return
For 2023, if you are filing single as a non-dependent, you must file a return if your income is over $2,425.
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