St-12 Form Wisconsin - Provide an explanation of changes and supporting documents or a letter requesting a refund will be accepted. Web wisconsin sales & use tax telefile. Milwaukee county sales and use tax increases from 0.5% to 0.9%. Read the wisconsin tax bulletin for timely sales and use tax return filing news. Agreement extending time to file claim for refund: Web sales and use tax. Telefile is fast, free, and available anytime except sundays from 5 a.m.
Read the wisconsin tax bulletin for timely sales and use tax return filing news. Milwaukee county sales and use tax increases from 0.5% to 0.9%. Agreement extending time to file claim for refund: Provide an explanation of changes and supporting documents or a letter requesting a refund will be accepted. Web sales and use tax. Telefile is fast, free, and available anytime except sundays from 5 a.m. Web wisconsin sales & use tax telefile.