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Wisconsin Income Tax Guide

3.5% to 7.65% bracketsWisconsin publishes separate 2026 schedules for joint and separate returns; single and head filers share a schedule.
Deduction shrinks with incomeThe 2026 standard deduction varies by filing status and phases down to zero at higher Wisconsin income.
$700 regular exemptionsThe estimate includes regular taxpayer, joint-spouse, and supported-dependent exemptions.
Official Sources2026 Form 1-ES instructionsWisconsin tax rates2026 individual formsIRS
2026 Form 1-ES instructionsWisconsin tax rates2026 individual formsIRS
Calculate for Wisconsin

How Wisconsin taxes work

Wisconsin income is simplifiedSupported income is treated as Wisconsin income before the official standard-deduction schedule and regular exemptions.
The sliding deduction is modeledSingle, joint, head, and separate formulas use their official 2026 maximums, phaseout rates, and income endpoints.
Regular exemptions are includedThe estimate subtracts $700 for the taxpayer, a joint spouse, and each supported qualifying child.
All filing schedules are appliedSingle and head filers share one bracket schedule, while joint and separate returns use their published thresholds.
Retirement subtraction is outsideThe age-67 retirement subtraction requires age and qualifying-income details the current form does not collect.

Common Wisconsin tax questions

Does Wisconsin have one fixed deduction?No. The deduction changes with filing status and declines as Wisconsin income rises.
Does 7.65% apply to all income?No. It is only the top marginal rate after the lower bands.
Are exemptions included?Yes, using $700 per supported taxpayer, joint spouse, and qualifying child.
Is the retirement subtraction included?No. The calculator does not collect the age and income-source details it requires.
Are nonresident rules included?No. Wisconsin prorates deductions, exemptions, and brackets for nonresidents and part-year residents.
Is this Wisconsin Form 1?No. It is a resident planning estimate without every state adjustment or credit.