Moved from Delaware to Utah Mid-Year: Which State Tax Returns Do You File?
Answer
Two returns, split at the move date. Delaware and Utah both tax residents, so each takes the portion of the year you were one. This is a residency question rather than a sourcing question — reciprocity agreements and convenience rules have nothing to do with it.
Last verified
Part-year returns are designed so that neither state taxes the whole year. The risk is not double taxation by default; it is misassigning income received near the move date, and losing the proration on deductions and credits.
What you file
- 1Part-year return · DelawareForm PIT-NON (part-year resident)
File a Delaware part-year return covering the months you lived in Delaware. A part-year resident of Delaware reports the income received while a Delaware resident, plus any Delaware-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
- 2Part-year return · UtahForm TC-40 with Schedule TC-40B
File a Utah part-year return covering the months you lived in Utah. A part-year resident of Utah reports the income received while a Utah resident, plus any Utah-source income received during the rest of the year, and prorates the deductions and credits to the residency period.
The two states, side by side
| Delaware | Utah | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — flat |
| Reciprocity partners | None | None |
| Convenience rule | Yes — general rule | No |
| Nonresident return | Form PIT-NON | Form TC-40 with Schedule TC-40B |
| Part-year return | Form PIT-NON (part-year resident) | Form TC-40 with Schedule TC-40B |
| Credit for other-state tax | Schedule I (Form PIT-RES) | Schedule TC-40S |
| Nonresident safe harbour | None published | None published |
| Local income tax | Yes | No |
| Revenue department | Delaware Division of Revenue | Utah State Tax Commission |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Utah and working in Delaware gives:Two part-year returns.
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.
- W-2 commuter: Delaware → UtahBoth states — credit offsets the double tax
- Remote worker: Delaware → UtahHome state only
- 1099 contractor: Delaware → UtahHome state, plus the client state if you work there
Other Delaware pairs
Questions people actually ask
I moved from Delaware to Utah mid-year. Do I have to file in both states?
Two returns, split at the move date. Delaware and Utah both tax residents, so each takes the portion of the year you were one. This is a residency question rather than a sourcing question — reciprocity agreements and convenience rules have nothing to do with it.
How do I split my income between Delaware and Utah?
By when you received it, measured against the date your domicile actually changed. Income received while you were a Delaware resident belongs on the Delaware return and income received afterwards on the Utah return, with each state prorating your deductions, exemptions and credits to its own part of the year. Keep evidence of the move date — a lease, a closing statement, a licence issue date.
How current is this?
The Delaware and Utah rules on this page were last checked against Delaware Division of Revenue and Utah State Tax Commission 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.
- Delaware Division of Revenue — individual income taxaccessed 2026-08-07
- Utah State Tax Commission — individual income taxaccessed 2026-08-07