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Moved from Texas to Illinois Mid-Year: Which State Tax Returns Do You File?

One part-year return — the state you moved toIllinois withholds

Answer

Only the state you moved to wants a return. Living in Texas produced no state filing obligation at all, and Illinois taxes you from the date your residency began. Expect Illinois withholding to start with your first post-move paycheck.

Last verified

This move takes you into the state income tax system rather than out of it. Texas asked nothing of you; Illinois does, from the date your residency there begins.

What you file

  1. 1Part-year return · IllinoisForm IL-1040 with Schedule NR

    File a Illinois part-year return covering the months you lived in Illinois. Texas has no wage income tax, so there is nothing to file for the earlier part of the year.

The two states, side by side

 TexasIllinois
Taxes wagesNoYes — flat
Reciprocity partnersNone4 (Form IL-W-5-NR)
Convenience ruleNoNo
Nonresident returnNot applicableForm IL-1040 with Schedule NR
Part-year returnNot applicableForm IL-1040 with Schedule NR
Credit for other-state taxNo income taxSchedule CR
Nonresident safe harbourNot applicable30 days
Local income taxNoNo
Revenue departmentTexas Comptroller of Public AccountsIllinois Department of Revenue
Last verified

The other direction

Reversing the commute does not always reverse the answer. Living in Illinois and working in Texas gives:One part-year return — the state you left.

Illinois to Texas →

Same two states, different situation

The withholding answer turns on how you are paid and where the work happens, not only on which two states are involved.

Other Texas pairs

Questions people actually ask

I moved from Texas to Illinois mid-year. Do I have to file in both states?

Only the state you moved to wants a return. Living in Texas produced no state filing obligation at all, and Illinois taxes you from the date your residency began. Expect Illinois withholding to start with your first post-move paycheck.

How do I split my income between Texas and Illinois?

By when you received it, measured against the date your domicile actually changed. Income received while you were a Texas resident belongs on the Texas return and income received afterwards on the Illinois return. Keep evidence of the move date — a lease, a closing statement, a licence issue date.

How current is this?

The Texas and Illinois rules on this page were last checked against Texas Comptroller of Public Accounts and Illinois Department of Revenue on 2026-08-07. We re-check the full grid every December after state legislative sessions close, and re-check the convenience-of-the-employer states quarterly because that is where the rules move fastest.

Sources

Every fact above comes from the revenue department that publishes the rule. We do not cite secondary summaries, and we do not restate a figure we could not find at source.