The investment seeks total return that is exempt from federal and Wisconsin personal income taxes. The fund invests at least 80% of assets in municipal securities that pay interest exempt from federal income tax, including federal alternative minimum tax (AMT), and Wisconsin individual income tax. It invests up to 20% of assets in securities that pay interest subject to federal income tax, including federal AMT. The fund invests up to 10% of assets in below investment-grade municipal securities.