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What is the Sales Internet Process (SIP)?

April 26, 2017internet process sales SIP

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What is the Sales Internet Process (SIP)?

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You can use the Sales Internet Process (SIP) to file your Wisconsin Sales and Use Tax Return (Form ST-12) via the Internet. SIP is a secure Internet process available 24 hours a day, 7 days a week, that combines the convenience of filing your sales and use tax return from your computer desktop with the speed and flexibility of making your tax payment by Electronic Funds Transfer (EFT).