Moved from Connecticut to Wyoming Mid-Year: Which State Tax Returns Do You File?
Answer
Only the state you left wants a return. Connecticut taxes the part of the year you lived there and prorates your deductions to that period. Wyoming has no income tax, so the income you receive after the move faces no state tax at all.
Last verified
The clean part of this move is that only one return follows it. The part that catches people is the withholding: Connecticut tax should stop when your residency does, and it often does not without a prompt.
What you file
- 1Part-year return · ConnecticutForm CT-1040NR/PY
File a Connecticut part-year return covering the months you lived in Connecticut. Wyoming has no wage income tax, so the move ends your state filing obligation.
The two states, side by side
| Connecticut | Wyoming | |
|---|---|---|
| Taxes wages | Yes — graduated | No |
| Reciprocity partners | None | None |
| Convenience rule | Only against convenience-rule states | No |
| Nonresident return | Form CT-1040NR/PY | Not applicable |
| Part-year return | Form CT-1040NR/PY | Not applicable |
| Credit for other-state tax | Schedule 2 (Form CT-1040) | No income tax |
| Nonresident safe harbour | None published | Not applicable |
| Local income tax | No | No |
| Revenue department | Connecticut Department of Revenue Services | Wyoming Department of Revenue |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Wyoming and working in Connecticut gives:One part-year return — the state you moved to.
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: Connecticut → WyomingHome state only
- Remote worker: Connecticut → WyomingHome state only
- 1099 contractor: Connecticut → WyomingHome state only — estimated payments
Other Connecticut pairs
Questions people actually ask
I moved from Connecticut to Wyoming mid-year. Do I have to file in both states?
Only the state you left wants a return. Connecticut taxes the part of the year you lived there and prorates your deductions to that period. Wyoming has no income tax, so the income you receive after the move faces no state tax at all.
How do I split my income between Connecticut and Wyoming?
By when you received it, measured against the date your domicile actually changed. Income received while you were a Connecticut resident belongs on the Connecticut return and income received afterwards on the Wyoming return. Keep evidence of the move date — a lease, a closing statement, a licence issue date.
How current is this?
The Connecticut and Wyoming rules on this page were last checked against Connecticut Department of Revenue Services and Wyoming 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.
- Connecticut Department of Revenue Services — individual income taxaccessed 2026-08-07
- Wyoming Department of Revenue — individual income taxaccessed 2026-08-07