Remote freelancers routinely cross state lines — digitally if not physically. You might live in Texas and work for a client headquartered in New York. You might split your year between two apartments in different states. You might deliver a project to a California company without ever setting foot there.
Whether any of this creates a state tax filing obligation depends on rules that vary significantly by state. Here is what you actually need to know.
The Core Concept: Sourcing
States tax income that is "sourced" to them — but defining source is where the complexity begins.
Service income (what most freelancers earn) is generally sourced using one of two methods:
Where the work is performed (origin sourcing): The income is taxed by the state where you — the freelancer — actually sat down and did the work. If you live and work in Florida (no income tax) and your client is in New York, origin sourcing means you owe no New York state tax.
Where the benefit is received (market-based sourcing): The income is taxed by the state where your client is located or where the service is consumed. Under this rule, that same Florida freelancer working for a New York client might owe New York tax on the income — even without setting foot in the state.
Most states have moved toward market-based sourcing for business income. For individual freelancers, the rules depend on the specific state, the nature of the work, and how the state treats nonresident individual income.
The New York Problem
New York is the most aggressive state for multi-state taxation of freelancers. If you perform services for a New York client and the work is "sourced" to New York under their rules, you may owe New York nonresident income tax — even if you performed the work entirely from another state.
New York also has the "convenience of the employer" rule, which historically targeted remote W-2 employees. Under this rule, if you work remotely from outside New York for convenience (rather than employer necessity), your income may still be taxed as New York-sourced. While this rule was developed for employees, some interpretations have extended pressure to contractors with New York-based clients.
Practical implication: If you have significant income from New York clients (typically more than $14,400 for nonresidents, which is the New York nonresident filing threshold), talk to a CPA who understands New York nonresident rules before assuming you owe nothing.
The California Problem
California also has aggressive nonresident sourcing rules. California taxes income from services performed in California by nonresidents. If you travel to California to do work — attend client meetings, perform on-site consulting — that portion of income may be California-taxable.
California also has a significant economic nexus standard: if you derive more than $611,711 in California sales (broadly defined) or have more than 25% of your sales from California, you may have a filing obligation. For most individual freelancers this threshold is rarely reached, but high-volume contractors serving California businesses should monitor it.
California has no income tax reciprocity agreements with other states. Every dollar of California-sourced income is taxed by California at California rates (1%–13.3% for individuals), and you must file a California nonresident return (Form 540NR) if your California-source income exceeds $18,241 (for 2024).
The Standard Case: You Work Where You Live
For most remote freelancers — people who work from a fixed home office in a single state — the answer is simpler: you file and pay taxes in your state of domicile (where you live), and potentially in states that have income taxes and use market-based sourcing for services.
States with no income tax: Alaska, Florida, Nevada, New Hampshire (no wage income tax), South Dakota, Tennessee (no wage income tax), Texas, Washington, Wyoming. If you live in one of these states and work remotely, you generally owe no state income tax on your freelance earnings regardless of where your clients are located.
States that follow origin sourcing for services: If your state sources service income to where it is performed, you pay taxes on that income to your home state — period. States like New Mexico and others have traditionally used this approach.
When You Clearly Have a Multi-State Filing Obligation
You need to file in a second state when:
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You physically work there. You spent time working in the state — not just passing through. A client engagement where you flew to Chicago and worked on-site for two weeks creates Illinois-sourced income.
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You maintain a home or domicile there. If you maintain two residences — say, a primary residence in Colorado and a second home you spend three months per year in Arizona — Arizona may consider you a statutory resident and tax your worldwide income during those months.
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Your state of residence has a reciprocity agreement that doesn't apply to you. Reciprocity agreements primarily cover W-2 employees, not self-employed individuals.
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You earn significant income from a market-sourcing state's client. Particularly New York and California, where the practical risk of assessment is higher.
Credits for Taxes Paid to Other States
The good news: you generally don't pay double. Most states that tax nonresidents also allow your home state to credit the taxes you paid to the other state.
If you live in Oregon and owe California tax on income from a California client, Oregon will credit the California tax you paid against your Oregon liability. The credit is typically limited to the lesser of (a) what you actually paid the other state, or (b) what your home state would have charged on that same income.
This credit mechanism prevents double taxation but doesn't eliminate complexity — you still have to file in both states, calculate both liabilities, and document the credit.
Practical Guidance for Most Freelancers
Track where you physically work. A simple note in your calendar — "client on-site in Austin this week" — creates a defensible record if you're ever questioned about multi-state sourcing.
Understand your home state's approach. Your state department of revenue website will describe how it sources service income. If it uses market-based sourcing and taxes nonresidents, your out-of-state clients may be paying you income that your state wants to tax — and income that their state also wants to tax.
Set aside more if you have California or New York exposure. The top marginal rates in these states (13.3% California, 10.9% New York) combined with federal tax and self-employment tax can push your effective rate above 50% in high-income scenarios.
Use the State Tax Overview to see how your state treats self-employment income, and the Self-Employment Tax Calculator to get an accurate federal baseline before layering in state obligations.
When to hire a CPA: If you have significant income (say, $50,000+) from clients in New York, California, or any state where you physically worked, a multi-state CPA is worth the cost. Multi-state returns are technically complex, the filing thresholds are low, and states are increasingly using income reporting data to identify nonresident filing obligations.
The Bottom Line
Most freelancers who work from a fixed home office in a single state have a single state filing obligation: their home state. The complexity rises when you have California or New York clients (market-based sourcing aggressiveness), when you physically work in multiple states, or when you maintain residences in more than one state.
The rule of thumb: if you had more than $10,000 in income sourced to any single state where you don't live, it is worth at least reviewing whether you have a filing obligation there before you assume you don't.