1099 Contractor in Connecticut with a Louisiana Client: Where Do You File?
Answer
Connecticut taxes all of it; Louisiana taxes only what you earn on its soil. Nothing is withheld from a 1099, so you pay Connecticut quarterly. A Louisiana client alone creates no Louisiana filing obligation — performing services inside Louisiana does, and Connecticut then credits that tax.
Last verified
The client's location is the wrong thing to track. What matters is where you were sitting when you did the work — which is why a contractor's exposure to Louisiana is measured in days on the ground rather than in invoices sent.
Louisiana publishes no de minimis day count or dollar floor for nonresidents. Any Louisiana-source wage income above the state's general filing threshold requires a nonresident return, and that threshold is reset each year — check the current figure on the Louisiana Department of Revenue nonresident instructions before filing.
What you file
- 1Quarterly estimated payments · Connecticut
Make quarterly estimated payments to Connecticut Department of Revenue Services on your full self-employment income — nothing is withheld from a 1099.
- 2Nonresident return · LouisianaForm IT-540B
File a Louisiana nonresident return only if you performed services inside Louisiana. Louisiana publishes no de minimis day count or dollar floor for nonresidents. Any Louisiana-source wage income above the state's general filing threshold requires a nonresident return, and that threshold is reset each year — check the current figure on the Louisiana Department of Revenue nonresident instructions before filing.
- 3Resident return · ConnecticutSchedule 2 (Form CT-1040)
File the Connecticut resident return last and claim the credit for any tax paid to Louisiana.
The two states, side by side
| Connecticut | Louisiana | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — flat |
| Reciprocity partners | None | None |
| Convenience rule | Only against convenience-rule states | No |
| Nonresident return | Form CT-1040NR/PY | Form IT-540B |
| Credit for other-state tax | Schedule 2 (Form CT-1040) | Schedule G (Form IT-540) |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | No |
| Revenue department | Connecticut Department of Revenue Services | Louisiana Department of Revenue |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Louisiana and working in Connecticut gives:Home state, plus the client state if you work there.
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 → LouisianaBoth states — credit offsets the double tax
- Remote worker: Connecticut → LouisianaHome state only
- Moved mid-year: Connecticut → LouisianaTwo part-year returns
Other Connecticut pairs
Questions people actually ask
I live in Connecticut and my client is in Louisiana. Do I have to file a Louisiana tax return?
Connecticut taxes all of it; Louisiana taxes only what you earn on its soil. Nothing is withheld from a 1099, so you pay Connecticut quarterly. A Louisiana client alone creates no Louisiana filing obligation — performing services inside Louisiana does, and Connecticut then credits that tax.
Do reciprocity agreements help a 1099 contractor?
No. Every state reciprocity agreement in the country is an arrangement about wage withholding between two revenue departments, and a 1099 has no withholding to switch off. Whether Connecticut and Louisiana hold an agreement makes no difference to a self-employed filer — sourcing rules decide the answer instead.
How current is this?
The Connecticut and Louisiana rules on this page were last checked against Connecticut Department of Revenue Services and Louisiana 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
- Louisiana Department of Revenue — individual income taxaccessed 2026-08-07