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Taxes due today
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The income tax filing deadline is today. Income tax returns must be received or postmarked by midnight. The deadline, usually on April 15, was extended this year because April 15 was a Sunday and April 16 was Emancipation Day, a holiday in Washington, D.C.

Income tax forms and instructions are available at The Wisconsin Department of Revenue offers online payment of taxes on its website.

The DOR recommends taxpayers file an extension request with the IRS if they won't make the deadline. Extensions must be requested by today to avoid late filing penalties. Go to the IRS website,, and search "extension" for more information. Taxpayers who file an extension request with the IRS automatically receive an extension from the state.

Even with an extension, taxpayers will owe interest on any tax not paid by today. To avoid interest charges during the extension period, they can pay any estimated amount owed by today using a 2017 Wisconsin Estimated Tax Voucher.