1099 Contractor in California with a Alabama Client: Where Do You File?
Answer
Two possible returns, one certainty. The certainty is California, which taxes residents on all self-employment income and expects quarterly estimated payments. The possibility is Alabama, which taxes nonresidents on services actually performed inside the state — invoices sent there do not count.
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.
Alabama publishes no de minimis day count or dollar floor for nonresidents. Any Alabama-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 Alabama Department of Revenue nonresident instructions before filing.
What you file
- 1Quarterly estimated payments · California
Make quarterly estimated payments to California Franchise Tax Board on your full self-employment income — nothing is withheld from a 1099.
- 2Nonresident return · AlabamaForm 40NR
File a Alabama nonresident return only if you performed services inside Alabama. Alabama publishes no de minimis day count or dollar floor for nonresidents. Any Alabama-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 Alabama Department of Revenue nonresident instructions before filing.
- 3Resident return · CaliforniaSchedule S
File the California resident return last and claim the credit for any tax paid to Alabama.
The two states, side by side
| California | Alabama | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — graduated |
| Reciprocity partners | None | None |
| Convenience rule | No | No |
| Nonresident return | Form 540NR | Form 40NR |
| Credit for other-state tax | Schedule S | Schedule CR |
| Nonresident safe harbour | None published | None published |
| Local income tax | No | Yes |
| Revenue department | California Franchise Tax Board | Alabama Department of Revenue |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in Alabama and working in California 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: California → AlabamaBoth states — credit offsets the double tax
- Remote worker: California → AlabamaHome state only
- Moved mid-year: California → AlabamaTwo part-year returns
Other California pairs
Questions people actually ask
I live in California and my client is in Alabama. Do I have to file a Alabama tax return?
Two possible returns, one certainty. The certainty is California, which taxes residents on all self-employment income and expects quarterly estimated payments. The possibility is Alabama, which taxes nonresidents on services actually performed inside the state — invoices sent there do not count.
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 California and Alabama hold an agreement makes no difference to a self-employed filer — sourcing rules decide the answer instead.
How current is this?
The California and Alabama rules on this page were last checked against California Franchise Tax Board and Alabama 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.
- California Franchise Tax Board — individual income taxaccessed 2026-08-07
- Alabama Department of Revenue — individual income taxaccessed 2026-08-07