File a return if you owe tax, are due a refund, or your AGI exceeds your exemption allowance. You should also file a Michigan return if you file a federal return, even if you do not owe Michigan tax. This will eliminate unnecessary correspondence from Treasury.
If your parents (or someone else) can claim you as a dependent on their return and your AGI is $1,500 or less if single or married filing separately or $3,000 or less if filing a joint return, you do not need to file a return unless you are claiming a refund of withholding.
Important: If your income subject to tax (MI-1040, line 14) is less than your personal exemption allowance (line 15) and Michigan income tax was withheld from your earnings, you must file a return to claim a refund of the tax withheld.