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

Missouri 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 Missouri RSU tax rate before a large vest — and need a realistic combined number that accounts for progressive state brackets, possible St. Louis earnings tax, and the KC metro's Missouri–Kansas border.

In plain terms

There is no flat Missouri -only tax rate. Effective tax combines progressive Missouri state income tax on wages per MO DOR rules for your filing year, plus federal income tax and FICA. St. Louis city residents and city workers may also owe the 1% St. Louis earnings tax on wages. Employers may MO tax on vests using supplemental methods that can under- when a large stacks on high salary. Verify current MO brackets on Missouri Department of Revenue publications.

Gather before you start

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

How the tax works

Missouri does not publish a separate rate because is ordinary wage income taxed under progressive state brackets. Your effective Missouri state rate on a depends on total taxable income for the year, not the alone. Searches for an tax rate in Missouri usually mean combined Missouri state plus federal plus FICA planning.

St. Louis adds a 1% earnings tax on wages for city residents and people who work in the city — counts as wages when those rules apply. That local layer sits on top of Missouri state income tax and is easy to omit from a rate estimate sourced from state-only tables.

The Kansas City metro spans Missouri and Kansas, and cross-border residency affects which state taxes your wages — but the rate question for a Missouri resident still resolves to Missouri marginal state rate plus federal plus FICA, with St. Louis earnings tax added when applicable. Employer supplemental on equity often uses flat methods that under- on stacked income.

Federal progressive tax and FICA apply nationwide on wages. Moving from Missouri to a no-tax state mid-year means part-year Missouri tax on pre-move connected vests. Remote Missouri residents working for out-of-state employers still typically owe Missouri tax on wages.

Plan with stacked income and local layers, not a single percentage. Use the Missouri tax guide for KC metro, St. Louis earnings tax, and residency detail, and the tax calculator with Missouri selected plus the gap calculator for a combined estimate.

What to check on your end

  • MO state on pay stub.
  • MO wage and tax boxes.
  • Federal Box 1 and .
  • MO with total income for filing year.
  • St. Louis earnings tax if city resident or worker.
  • Federal gap vs .
  • Move date if part-year MO.
1 more checklist item
  • Calculator output vs pay stub.

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

Missouri uses progressive brackets. planning should use current DOR guidance and your full-year income, not a stale flat estimate — and add St. Louis earnings tax if applicable.

What to pull from your files

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

Kansas City employee with $29,000 quarterly vest

Illustration only, not your tax situation.

Drew, MO resident, vests $29,000 on $185,000 salary. MO and federal supplemental apply on the . Drew's combined MO and federal marginal rates on stacked income exceed flat supplemental . Drew uses tax calculator with Missouri and gap calculator.

Questions people ask

What is the RSU tax rate in Missouri?
No flat rate — MO progressive state tax plus federal plus FICA on , based on total income. St. Louis earnings tax may add 1% for city residents and workers.
Missouri vs Texas RSU tax rate?
Missouri taxes wages. Texas has no state wage income tax for typical residents.
KC metro — Missouri or Kansas rate on my RSU?
Depends on residency and where you work, not metro name. Missouri residents on MO-sourced wages use Missouri rates.
MO RSU supplemental withholding — is that my final rate?
No. Supplemental methods are only and may not match on stacked income.
Moved from Missouri to Florida?
MO 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 MO resident with large equity income.
  • KC metro cross-border with conflicting state boxes.
  • Employer withheld wrong state on MO 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.

Missouri progressive income tax on vest wages; confirm current MO 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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