Comprehensive statutory analysis of Wisconsin individual income tax rates, Department of Revenue filing forms, extension guidelines, telecommuting sourcing rules, and pass-through entity tax provisions.
Primary Resident FormForm 1 (Individual Income Tax Return)
Nonresident FormForm 1NPR (Nonresident and Part-Year Resident Return)
Convenience of Employer RuleNo
Reciprocity AgreementsNone
Community Property StateCommon Law
State Estate/Inheritance TaxNone (Federal Only)
QSBS IRC § 1202 ConformityState Specific / Under Review
Marginal Rate Ladder: Wisconsin
Source: Tax Foundation — State Individual Income Tax Rates and Brackets, 2026 (retrieved 2026-08-09). Ranks Wisconsin against all 51 jurisdictions.
2026 Legislative & Statutory Highlights
Wisconsin operates a 4-bracket graduated income tax system with rates of 3.50%, 4.40%, 5.30%, and a top rate of 7.65% applying to high earners. Wisconsin provides a unique sliding scale standard deduction that phases down as income rises.
Wisconsin operates a graduated personal income tax schedule with marginal brackets reaching up to 7.6%. Tax parameters are indexed annually or enacted through state legislative sessions. Taxpayers should ensure that adjustments for federal bonus depreciation, Section 179 expensing, and Net Operating Loss (NOL) carryforwards follow Wisconsin's specific rolling or static Internal Revenue Code conformity date.
Filing Forms, Deadlines & Extension Guidelines
Full-Year Resident ReturnForm 1 (Individual Income Tax Return)
Nonresident / Part-Year ReturnForm 1NPR (Nonresident and Part-Year Resident Return)
Statutory Filing Calendar & Extension Provisions:Automatic 6-month extension to October 15 matching federal Form 4868, with payment due April 15.
Wisconsin taxes residents on all income. Wisconsin maintains a reciprocal income tax agreement with Illinois, Indiana, Kentucky, and Michigan.
Cross-Border Tax Credits:If you are an Wisconsin resident earning wages in another state that also levies income tax, Wisconsin generally permits a resident credit for taxes paid to other jurisdictions (subject to statutory percentage limitations) to avoid unconstitutional double taxation.
Pass-Through Entity (PTE) Tax & Small Business Rules
Wisconsin enacted an elective Pass-Through Entity Tax (Act 368) allowing S-corps and partnerships to pay tax at 7.9% at the entity level to provide full federal deduction recovery.
Estate & Inheritance Tax
Wisconsin has no state estate tax and no inheritance tax. Wisconsin is a marital property state (community property principles).
Local & County Taxes
Wisconsin municipalities do not levy local personal income taxes on wages.
Worked Tax Example: $120,000 W-2 Earner in Wisconsin
A single filer in Milwaukee or Madison earning $120,000 pays approximately $6,220 in Wisconsin state income tax across the graduated brackets, an effective rate of 5.18%.
Gross W-2 Wages$120,000
Est. State Tax$6,220
Effective State Rate5.18%
Calculate Your 2026 Wisconsin Tax Liability
Enter your taxable income, filing status, and municipal details below to calculate your customized state tax liability and print your executive summary.
Structure
graduated
Top rate
7.6%
State tax
$3,853
Eff. rate (state+local)
4.8%
Graduated system, top rate 7.65%. 2026 brackets inflation-indexed — verify against WI DOR. Not a community property state.
⚠ Some figures for this state are not yet fully verified — confirm with the state Department of Revenue before relying on them.
Official Executive Tax Dossier · Form 1040 Statutory Mapping
2026 Executive Wisconsin State Tax Audit Summary
STATUTORY SEAL:FT-2026-IRS-3CE8ABB9IRS Rev. Proc. 2025-32 Verified
Gross Income$80,000
Taxable Income$80,000
Total Combined Tax$3,853
Effective Total Rate4.8%
Statutory Governing Authority: Wisconsin Department of Revenue Statutory Tax Code · Top Marginal Rate: 7.6% · Tax Foundation 2026 State Tax Rates & Brackets Report
Not tax, legal, or financial advice
FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift yearly. Before filing or making decisions, consult a licensed CPA, EA, or attorney. FiscTalk is not a fiduciary and is not affiliated with the IRS or any state agency.
Does Wisconsin have a state personal income tax in 2026?
Yes. Wisconsin operates a graduated personal income tax schedule with marginal brackets reaching up to 7.6%. Taxpayers must file an annual return if gross income exceeds statutory filing thresholds.
What is the 2026 individual income tax filing deadline for Wisconsin?
The regular filing deadline for Wisconsin individual income tax returns is April 15, 2026. Taxpayers seeking an extension may receive up to 6 additional months to file, but any tentative tax due must be paid by the original deadline to prevent late-payment interest and statutory penalties.
How does Wisconsin treat remote workers and telecommuters?
Wisconsin taxes residents on all income. Wisconsin maintains a reciprocal income tax agreement with Illinois, Indiana, Kentucky, and Michigan.
Can small business owners in Wisconsin bypass the federal $10,000 SALT cap?
Wisconsin enacted an elective Pass-Through Entity Tax (Act 368) allowing S-corps and partnerships to pay tax at 7.9% at the entity level to provide full federal deduction recovery.
Does Wisconsin impose a separate estate or inheritance tax?
Wisconsin has no state estate tax and no inheritance tax. Wisconsin is a marital property state (community property principles).
Source-verified — not professional advice
Every figure on this page is checked in-house against its primary source — IRS revenue procedures and publications, state Departments of Revenue, and the text of the underlying statute — before publication. Last reviewed 2026-10-20. The full source list is at the bottom of this page. If you spot an error, see our corrections & standards policy.
Not tax, legal, or financial advice
FiscTalk provides general educational information from public sources. Your tax results depend on the full set of facts, your filing history, and the jurisdiction-specific rules that shift yearly. Before filing or making decisions, consult a licensed CPA, EA, or attorney. FiscTalk is not a fiduciary and is not affiliated with the IRS or any state agency.