1099 Contractor in New York with a California Client: Where Do You File?
Answer
Pay New York by instalments, and watch your California days. Reciprocity agreements do not help here: every one of them covers wage withholding, and a 1099 has no withholding to switch off. New York taxes the full profit, California taxes the on-site share, and the New York credit reconciles them.
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 California is measured in days on the ground rather than in invoices sent.
California publishes no de minimis day count or dollar floor for nonresidents. Any California-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 California Franchise Tax Board nonresident instructions before filing.
What you file
- 1Quarterly estimated payments · New York
Make quarterly estimated payments to New York State Department of Taxation and Finance on your full self-employment income — nothing is withheld from a 1099.
- 2Nonresident return · CaliforniaForm 540NR
File a California nonresident return only if you performed services inside California. California publishes no de minimis day count or dollar floor for nonresidents. Any California-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 California Franchise Tax Board nonresident instructions before filing.
- 3Resident return · New YorkForm IT-112-R
File the New York resident return last and claim the credit for any tax paid to California.
The two states, side by side
| New York | California | |
|---|---|---|
| Taxes wages | Yes — graduated | Yes — graduated |
| Reciprocity partners | None | None |
| Convenience rule | Yes — general rule | No |
| Nonresident return | Form IT-203 | Form 540NR |
| Credit for other-state tax | Form IT-112-R | Schedule S |
| Nonresident safe harbour | None published | None published |
| Local income tax | Yes | No |
| Revenue department | New York State Department of Taxation and Finance | California Franchise Tax Board |
| Last verified |
The other direction
Reversing the commute does not always reverse the answer. Living in California and working in New York 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: New York → CaliforniaBoth states — credit offsets the double tax
- Remote worker: New York → CaliforniaHome state only
- Moved mid-year: New York → CaliforniaTwo part-year returns
Other New York pairs
Questions people actually ask
I live in New York and my client is in California. Do I have to file a California tax return?
Pay New York by instalments, and watch your California days. Reciprocity agreements do not help here: every one of them covers wage withholding, and a 1099 has no withholding to switch off. New York taxes the full profit, California taxes the on-site share, and the New York credit reconciles them.
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 New York and California hold an agreement makes no difference to a self-employed filer — sourcing rules decide the answer instead.
How current is this?
The New York and California rules on this page were last checked against New York State Department of Taxation and Finance and California Franchise Tax Board 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.
- New York State Department of Taxation and Finance — individual income taxaccessed 2026-08-07
- California Franchise Tax Board — individual income taxaccessed 2026-08-07