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RSU tax rate in Wisconsin: state, federal, and FICA on vest income

Wisconsin applies progressive state income tax to RSU vest wages — federal marginal tax and FICA still apply on top.

Rates and rules change. Content is reviewed for tax year 2026. Check the last-reviewed date and methodology on each page, then confirm against IRS or state guidance before you file.

State sourcing rules may depend on facts and timing

Which state taxes RSU income depends on residency, work location, grant terms, and vest date, not just where you live on December 31. Day-count splits and flat-rate estimates on this site are planning tools only, not legal sourcing determinations.

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You searched for a Wisconsin RSU tax rate and found conflicting percentages — you want the real combined hit on vest FMV including Wisconsin state tax, federal income tax, and FICA, not a single number from an old blog post.

In plain terms

There is no flat Wisconsin -only tax rate. Effective tax combines progressive Wisconsin state income tax on wages per WI DOR rules for your filing year, plus federal income tax and FICA. Employers may WI tax on vests using supplemental methods that can under- when a large stacks on high salary. Verify current WI brackets on Wisconsin Department of Revenue publications.

Gather before you start

  • WI residency for year.
  • confirmation and WI on pay stub.
  • WI wage boxes.
  • Wisconsin DOR rate guidance for filing year.
  • tax calculator with Wisconsin selected.

How the tax works

Searches for an tax rate in Wisconsin usually mean you want one percentage to plan cash for a — but Wisconsin does not publish a separate equity rate. is taxed as ordinary wages under progressive state brackets, and your effective rate depends on total taxable income for the year, not the alone.

Federal progressive income tax and FICA apply on top of Wisconsin state tax. FICA runs nationwide on wages with Social Security stopping at the annual wage base and Medicare applying to the full amount. Employer supplemental on equity often uses flat methods that can under- compared with your true stacked on salary plus .

Milwaukee and Madison employees planning a large should model Wisconsin with all income, not a single bracket snippet from a rate table. Wisconsin does not add a municipal wage tax on income the way Philadelphia does — state income tax is the primary Wisconsin layer for most workers outside special local situations.

If you commute across the Wisconsin–Illinois border, reciprocal rules may change which state withholds on wages — that affects your pay stub but not the underlying fact that Wisconsin taxes WI-sourced income for residents. Moving from Wisconsin to a no-tax state mid-year means a part-year Wisconsin return on pre-move connected income; post-move vests follow your new state's rules.

The practical planning number is a combined estimate: Wisconsin marginal state rate plus federal plus remaining FICA on the . Use the Wisconsin tax guide for mechanism detail and the tax calculator with Wisconsin selected for a stacked-income estimate rather than a single flat percentage.

What to check on your end

  • WI state on pay stub.
  • WI wage and tax boxes.
  • Federal Box 1 and .
  • WI with total income for filing year.
  • Federal gap vs .
  • Move date if part-year WI.
  • Calculator output vs pay stub.
1 more checklist item
  • Wisconsin DOR pub for current year.

Using a single Wisconsin percentage from an old blog for RSU planning

Wisconsin uses progressive brackets. planning should use current DOR guidance and your full-year income, not a stale flat estimate.

What to pull from your files

  • WI pay stub.
  • WI boxes.
  • confirmation.
  • WI estimated tax if made.
  • Move docs if part-year.

Milwaukee employee with $26,000 quarterly vest

Illustration only, not your tax situation.

Jordan, WI resident, vests $26,000 on $175,000 salary. WI and federal supplemental apply on the . Jordan's combined WI and federal marginal rates on stacked income exceed flat supplemental . Jordan uses tax calculator with Wisconsin and gap calculator.

Questions people ask

What is the RSU tax rate in Wisconsin?
No flat rate — WI progressive state tax plus federal plus FICA on , based on total income.
Are RSUs taxed in Wisconsin?
Yes for typical WI residents on WI-sourced wages.
Wisconsin vs Texas RSU tax rate?
Wisconsin taxes wages. Texas has no state wage income tax for typical residents.
Why doesn't my pay stub match a Wisconsin rate I found online?
Supplemental uses flat methods that may not match your final when income stacks.
Moved from Wisconsin to Florida — what rate applies?
WI may tax pre-move connected income. Post-move FL vests avoid FL state income tax for typical residents.

When a CPA is worth it

  • Part-year WI resident with large equity income.
  • WI-IL border commuter with conflicting state boxes.
  • Employer withheld wrong state on WI resident .
  • Multi-state remote work allocation.

Sources and notes

Primary tax claims on this page are supported by the official and secondary sources below. Broker and software links describe reporting mechanics — confirm rules against IRS or state guidance.

Wisconsin progressive income tax on vest wages; confirm current WI DOR rates.

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For learning, not filing

VestingTax.com is not a CPA firm or tax preparer. Grants, employers, and states all differ. Use the cited IRS and state sources above, your own documents, and a qualified tax professional before you make decisions from this guide.

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