Under the Income section of the Wisconsin state form, TurboTax has this option: "WI Interest from State and Municipal Obligations". This option listed the correct dollar amount in the margin, but did not apply it by reducing the income by that amount. I discovered that one has to click on the Edit button for that option and then type in the amount that is deductible. By default, TurboTax assumes $0 is deductible. Once I entered the correct amount, the income total reduced by that amount.
