Wisconsin

General Instructions

The Wisconsin Department of Revenue does not require that you file for an extension. Wisconsin automatically grants a four month extension of time to file until August 15, 2008. However, to avoid penalties, Wisconsin requires that at least 90% of the total tax liability be paid by April 15, 2008. Be sure to attach a copy of your Federal Extension form or a brief note explaining that you wish to apply the Federal Automatic 4-month Extension Provision to your Wisconsin return.

Penalty and Interest Charges on Tax Owed:

In all cases, interest will be charged at a rate of 1% per month from the date the tax should have been paid (April 15, 2008) until the date of payment. In addition, the state may assess the following penalties:

• Late Payment Penalty. Wisconsin may also assess additional late payment penalties at a rate of 18% per year on the outstanding balance if you do not pay the total tax due by August 15, 2008.

If You Owe...

If you owe additional Wisconsin Income Taxes you may pay your estimated balance due in the following ways:

1. Prepare an Wisconsin Form ES (click here to download PDF )
2. Enclose a check or money order along with the completed form.
3. Mail to:
   Wisconsin Department of Revenue
   PO Box 2942
   Milwaukee, WI 53201-2942

Wisconsin accepts payment by credit card through Official Payments Corporation. Making your payment in this way automatically qualifies you for an extension of time to file your tax return until August 15, 2008. You will not need to file any other forms at this time. You can do this either on the web or by telephone.

Official Payments Corporation will accept Discover/NOVUS, MasterCard, Visa or American Express card to pay your personal income taxes. There is a convenience fee for this service equal to 2.5% of the tax amount being charged. The minimum fee is $1.00.

To make your payment and receive an automatic extension of time to file, have the following information ready:

• The amount you are paying in dollars and cents
• Your social security number
• Your spouse's social security number (if applicable)
• The first four letters of your last name
• The first four letters of your spouse's last name, if different from yours
• Tax year 2007
• Your home telephone number (including area code)
• Credit card number
• Credit card expiration date (MM/YYYY)
• ZIP Code for the address where your credit card bills are sent

Make your payment at the Official Payments Corp. website.

Use your touch-tone phone to call toll-free (800) 272-9829. At the end of your call you will be given a confirmation number. Write down and save this confirmation number for your records

If You Do Not Owe...

The Wisconsin Department of Revenue does not require that you request an extension if you do not owe or are expecting a tax refund. There is nothing to be filed at this time.

Download Extension Form(s)

Wisconsin

Wisconsin Form ES