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