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DOR Make a Payment - Wisconsin Department of Revenue
If you cannot pay the full amount due with your tax return, file the completed Wisconsin tax form on time and pay as much as possible.
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Instructions for Form 7004 (Rev. December 2017)
Feb 1, 2018 The IRS will no longer send a notification that your extension has been approved. Form 7004 does not extend the time to pay any tax due.
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Wisconsin Tax Return Due Dates and Payments
Apr 20, 2020 Yes, unpaid income and franchise taxes due on or after April 1, 2020, and before July 15, 2020, will not accrue interest or penalties until July
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