To change the Michigan use tax in TurboTax for Windows:
Open your tax return and click State Taxes (top center of your screen in TurboTax for Windows), then click Continue.
Click Edit to the far right of Michigan.
Continue through the interview. When you reach the screen that says Your Michigan taxes are ready for us to check, click Edit after Credits and taxes. (Click the first screenshot below.)
On the Take a look at Michigan credits and taxes screen, scroll down and click Revisit next to Michigan use tax. (Click the second screenshot below.)
Choose the items that apply when asked Any untaxed out-of-state purchases? Then click Continue and follow the onscreen instructions. (Click the third screenshot below.)
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.