1099 Contractor in Mississippi with a Oklahoma Client: Where Do You File?
Answer
Mississippi always, Oklahoma sometimes. With no withholding on a 1099 the whole tax is yours to manage: estimate to Mississippi through the year, and file a Oklahoma nonresident return for any income from work you physically performed in Oklahoma, claiming the credit back on the Mississippi return.
Last verified
Reciprocity agreements are the first thing contractors ask about and the first thing that does not apply to them. Every agreement in the country is a wage-withholding arrangement, and a 1099 has no withholding to switch off.
Oklahoma publishes no de minimis day count or dollar floor for nonresidents. Any Oklahoma-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 Oklahoma Tax Commission nonresident instructions before filing.
What you file
- 1Quarterly estimated payments · Mississippi
Make quarterly estimated payments to Mississippi Department of Revenue on your full self-employment income — nothing is withheld from a 1099.
- 2Nonresident return · OklahomaForm 511-NR
File a Oklahoma nonresident return only if you performed services inside Oklahoma. Oklahoma publishes no de minimis day count or dollar floor for nonresidents. Any Oklahoma-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 Oklahoma Tax Commission nonresident instructions before filing.
- 3Resident return · MississippiForm 80-160
File the Mississippi resident return last and claim the credit for any tax paid to Oklahoma.
The two states, side by side
| Mississippi | Oklahoma | |
|---|---|---|
| Taxes wages | Yes — flat | Yes — graduated |
| Reciprocity partners | None | None |
| Convenience rule | No | No |
| Nonresident return | Form 80-205 | Form 511-NR |
| Credit for other-state tax | Form 80-160 | Form 511-TX |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | No |
| Revenue department | Mississippi Department of Revenue | Oklahoma Tax Commission |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Oklahoma and working in Mississippi 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: Mississippi → OklahomaBoth states — credit offsets the double tax
- Remote worker: Mississippi → OklahomaHome state only
- Moved mid-year: Mississippi → OklahomaTwo part-year returns
Other Mississippi pairs
Questions people actually ask
I live in Mississippi and my client is in Oklahoma. Do I have to file a Oklahoma tax return?
Mississippi always, Oklahoma sometimes. With no withholding on a 1099 the whole tax is yours to manage: estimate to Mississippi through the year, and file a Oklahoma nonresident return for any income from work you physically performed in Oklahoma, claiming the credit back on the Mississippi return.
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 Mississippi and Oklahoma hold an agreement makes no difference to a self-employed filer — sourcing rules decide the answer instead.
How current is this?
The Mississippi and Oklahoma rules on this page were last checked against Mississippi Department of Revenue and Oklahoma 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.
- Mississippi Department of Revenue — individual income taxaccessed 2026-08-07
- Oklahoma Tax Commission — individual income taxaccessed 2026-08-07