I amended fed return to add schedule k-1. my WI 2k-1 states no WI taxable income but turbo tax amendment shows I owe $. How do I amend state return?

First, fill out an amended federal income tax return, Form 1040X. Then, get the proper form from your state and use the information from Form 1040X to help you fill it out. Like the IRS, your state uses a special form for an amended return. Many states also use the X suffix for the form number.