Wisconsin Income Tax Rate 2018 - 2019

Wisconsin state income tax rate table for the 2018 - 2019 filing season has four income tax brackets with WI tax rates of 4%, 5.84%, 6.27% and 7.65% for Single, Married Filing Jointly, Married Filing Separately, and Head of Household statuses. The Wisconsin tax rate is unchanged from last year, however, the income tax brackets increased due to the annual inflation adjustment.

Wisconsin income tax rate and tax brackets shown in the table below are based on income earned between January 1, 2018 through December 31, 2018. Outlook for the 2019 Wisconsin income tax rate is to remain unchanged with income tax brackets increasing due to an annual inflation adjustment.

Wisconsin Single Income Tax Brackets
Income Tax BracketTax Rate 2018
$0to$11,4504%
$11,451to$22,9005.84%
$22,901to$252,1506.27%
$252,151to7.65%
Wisconsin Married Filing Jointly Tax Brackets
Income Tax BracketTax Rate 2018
$0to$15,2704%
$15,271to$30,5405.84%
$30,541to$336,2006.27%
$336,201to7.65%
Wisconsin Married Filing Separately Tax Brackets
Income Tax BracketTax Rate 2018
$0to$7,6304%
$7,631to$15,2705.84%
$15,271to$168,1006.27%
$168,101to7.65%
Wisconsin Head of Household Tax Brackets
Income Tax BracketTax Rate 2018
$0to$11,4504%
$11,451to$22,9005.84%
$22,901to$252,1506.27%
$252,151to7.65%

Source: 2018 Wisconsin Individual Income Tax Rates, published by the Wisconsin Department of Revenue.

Please reference the Wisconsin tax forms and instructions booklet published by the Wisconsin Department of Revenue to determine if you owe state income tax or are due a state income tax refund. Wisconsin income tax forms are generally published at the end of each calendar year, which will include any last minute 2018 - 2019 legislative changes to the WI tax rate or tax brackets. The Wisconsin income tax rate tables and tax brackets shown on this web page are for illustration purposes only.

Wisconsin Tax Brackets 2018 - 2019

Looking at the tax rate and tax brackets shown in the tables above for Wisconsin, we can see that Wisconsin collects individual income taxes differently for Single versus Married filing statuses, for example. We can also see the progressive nature of Wisconsin state income tax rates from the lowest WI tax rate bracket of 4% to the highest WI tax rate bracket of 7.65%.

For single taxpayers living and working in the state of Wisconsin:

  • Tax rate of 4% on the first $11,450 of taxable income.
  • Tax rate of 5.84% on taxable income between $11,451 and $22,900.
  • Tax rate of 6.27% on taxable income between $22,901 and $252,150.
  • Tax rate of 7.65% on taxable income over $252,150.

For married taxpayers living and working in the state of Wisconsin:

  • Tax rate of 4% on the first $15,270 of taxable income.
  • Tax rate of 5.84% on taxable income between $15,271 and $30,540.
  • Tax rate of 6.27% on taxable income between $30,541 and $336,200.
  • Tax rate of 7.65% on taxable income over $336,200.

For the Single, Married Filing Jointly, Married Filing Separately, and Head of Household filing statuses, the WI tax rates and the number of tax brackets remain the same. Notice, however, the Wisconsin income tax brackets for Married Filing Jointly increase from $11,450 to $15,270 (not double) at 5.84%, and increase from $252,150 to $336,200 (not double) at 7.65% the highest tax bracket. Married Filing Separately income tax brackets are approximately one half that of the Married Filing Jointly income tax brackets in the state of Wisconsin.

Last updated: January 15, 2019