St 12 wisconsin 2026

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The document provides detailed instructions for filing the Wisconsin Sales and Use Tax Return (Form ST-12) and the County Sales and Use Tax Schedule (Schedule CT). It outlines the requirements for electronic filing, payment methods, and necessary information to report sales and use taxes accurately. The document includes step-by-step guidance on verifying account details, entering sales data, submitting returns, maintaining records, and handling amended returns. It emphasizes compliance with tax regulations and offers contact information for assistance.

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Click ‘Get Form’ to open the ST-12 Wisconsin form in the editor.
Verify that your tax account number, name, address, and reporting period are correct. If there are any changes, notify the Department of Revenue.
Enter the total sales amount on Line 1. This includes all cash, credit, and conditional sales without reducing for returns.
For Line 2, input any sales for which you received exemption certificates. Ensure you have valid documentation for these exemptions.
Complete Lines 9 through 12 if you had taxable sales in four or fewer counties. Use the county codes provided in the instructions.
Review all entries carefully before submitting your return to ensure accuracy and compliance with state regulations.

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