Wisconsin Standard Deduction

Wisconsin uses a sliding-scale standard deduction, which means the amount you can deduct depends on both your filing status and your income level.

Unlike states with a flat standard deduction, Wisconsin’s deduction phases out as income increases.

As your income rises, the allowable standard deduction gradually decreases and may eventually be eliminated.

Because of this structure, Wisconsin taxpayers must pay close attention to income thresholds and deduction limits when preparing their returns.

Wisconsin Standard Deduction

The standard deduction starts at the following amounts for lower-income taxpayers and decreases as income increases:

• Single filers: Up to $14,260, subject to phaseout
• Married filing jointly: Up to $26,510, subject to phaseout

The exact amount you may claim depends on your Wisconsin income, not just your filing status. Higher-income taxpayers may receive a reduced deduction or no standard deduction at all.

Previous Maximum Standard Deduction Amounts (for Comparison)

To show how the phaseout works, here are some of the maximum standard deduction amounts and the income ranges where they begin to phase out for the 2024 tax year:

• Single:
  Maximum deduction of $9,930, phased out between incomes of $14,310 and $97,060
• Head of Household:
  Maximum deduction of $12,820, phased out between incomes of $14,310 and $97,060
• Married Filing Jointly:
  Maximum deduction of $17,880, phased out between incomes of $20,090 and $110,493
• Married Filing Separately:
  Maximum deduction of $8,490, phased out between incomes of $9,540 and $52,466

Once income exceeds the top of the phaseout range, the Wisconsin standard deduction is fully eliminated.

Standard Deduction vs. Wisconsin Itemized Deduction Credit

Wisconsin does not allow full itemized deductions in the same way the federal government does. Instead, taxpayers may choose between:

• The Wisconsin standard deduction, or
• The Wisconsin itemized deduction credit

How the Itemized Deduction Credit Works

The Wisconsin itemized deduction credit equals 5% of the difference between:

• Your eligible federal itemized deductions, and
• Your Wisconsin standard deduction

This credit can reduce your Wisconsin tax liability, but does not reduce taxable income. Whether the standard deduction or the itemized deduction credit is more beneficial depends on your income level and the size of your itemized deductions.

Why Electronic Filing Is Recommended

Because Wisconsin’s standard deduction depends on income-based phaseouts and involves a choice between a deduction and a credit, electronic filing (e-filing) is highly recommended.

E-filing:

• Automatically calculates standard deduction phaseouts
• Compares the standard deduction to the itemized deduction credit
• Applies the correct income thresholds for your filing status
• Reduces math and calculation errors
• Ensures you receive the maximum benefit allowed by law
• Speeds up processing and refunds

Most tax software is designed to handle Wisconsin’s unique deduction rules and will guide you step by step through the decision-making process.

Bottom Line

Wisconsin’s sliding-scale standard deduction can provide significant tax relief for lower- and moderate-income taxpayers, but it becomes less valuable as income rises.

Choosing between the standard deduction and the itemized deduction credit requires careful calculation. Filing electronically is the best way to ensure accuracy, maximize tax savings, and avoid errors when navigating Wisconsin’s complex deduction rules.