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How RSUs are taxed for Illinois residents

Illinois taxes RSU vest income as wages; part-year residency applies if you move in or out.

Rates and rules change. Check the tax year and last-reviewed date 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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Illinois taxes income as wages with a flat state income tax. If you move into or out of Illinois during the year, a part-year return generally applies, splitting income between your Illinois and non-Illinois periods.

Why this happens

Illinois treats value as taxable wage income at the state level.

Illinois uses a flat income tax rate on wages.

Part-year residents generally file to report income for the portion of the year they lived in Illinois.

Equity earned while you worked in Illinois may be Illinois-connected even if it vests later.

What to check

  • Illinois state wages on your .
  • The current Illinois flat rate from official sources.
  • Whether a part-year return applies after a move.
  • How timing lines up with your residency.
  • State guidance or a professional for part-year allocation.

Common mistake

Skipping a part-year return after moving: If you lived in Illinois for part of the year, that period's income generally still needs to be reported to Illinois.

Example scenario (hypothetical)

Illustration only, not your tax situation.

Example: A taxpayer moves out of Illinois in August. Vests during the Illinois period are generally Illinois-connected, and a part-year return splits the year. Later vests depend on the new state's rules.

When to get help from a tax pro

  • You moved into or out of Illinois.
  • A local Chicago-area tax question arises.
  • You have vests on both sides of a move.
  • You want help with a part-year return.

Related calculators

Related pages

For learning, not filing

Grants, employers, and states all differ. Use your own documents and a qualified tax professional before you make decisions from this guide.