File Wisconsin Form 1X
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Yearly versions of this Tax Form
Wisconsin Form 1X is a tax return document for residents who need to amend their previous return. Also known as the amended individual tax return form, it is used to correct any errors in income, reimbursements or tax credits on a number of other Wisconsin 1 tax documents. When filling out your 1X form, you will be given the chance to explain why you are making an amendment in your tax return.