What Is Tax Nexus for Remote Workers?
Nexus: The Connection That Creates Tax Obligation
Tax nexus is the legal connection between a person or business and a state that gives the state the authority to impose tax. Without nexus, a state cannot legally tax you or require your employer to collect taxes on your behalf.
For individual remote workers, nexus is established in two main ways: by being a resident of the state (domicile nexus), or by earning income from work performed within the state's borders (source-based nexus). Understanding which type of nexus you have — and in which states — is the foundation of your multi-state tax situation. Check your specific state combination with the remote worker tax calculator.
Personal Income Tax Nexus for Remote Workers
For individual taxpayers, income tax nexus is relatively straightforward in most states:
- Residency nexus: Your home state taxes your worldwide income because you live there. Every state with an income tax claims tax on all income earned by residents, regardless of where the work was performed.
- Source nexus: States can tax nonresidents on income earned within their borders. If you physically work in a state — even temporarily — that state has source nexus over that income.
The typical remote worker situation: a resident of State A working remotely for an employer in State B. Under standard rules, State A has residency nexus (taxes all income), State B may have limited or no nexus (income was earned in State A, not State B), and a credit from State A for any taxes paid to State B prevents double taxation.
⚠️ The Convenience-of-Employer Exception
Several states — most notably New York — have enacted rules that effectively override the standard source-based nexus analysis. Under New York's convenience-of-employer rule, if you work remotely for a New York employer for your own convenience rather than the employer's necessity, New York claims nexus over your income regardless of where you physically work. This can result in double state taxation that credit mechanisms don't fully resolve.
Corporate Tax Nexus: The Employer's Problem
Remote work doesn't just create tax obligations for employees — it can also create corporate tax obligations for employers. When a company's employee works from a state where the company has no office or registration, that employee's presence can create corporate income tax nexus for the employer in that state.
This corporate nexus has two dimensions:
- Corporate income tax nexus: The employer may need to file a corporate income tax return and pay apportioned corporate tax in the employee's home state
- Payroll tax registration: The employer must register as an employer in the state, withhold state income taxes, and remit unemployment insurance taxes
Many employers have responded to this exposure by restricting which states employees can work from — often called a "registered states" policy. If your employer has told you they can't support you working from a particular state, this corporate nexus concern is usually the reason.
⚠️ Physical Presence Standard
Corporate nexus is generally triggered by physical presence in a state — an employee working there is physical presence. The threshold for when nexus is established varies: some states establish nexus on day one of an employee working there; others use a 30-day or de minimis threshold. California, New York, and Massachusetts are among the most aggressive in establishing nexus quickly.
Economic Nexus vs Physical Presence Nexus
The 2018 Supreme Court decision in South Dakota v. Wayfair established that states can impose sales tax obligations on businesses without physical presence — purely based on economic activity (revenue) in the state. This "economic nexus" standard for sales tax has since been adopted by nearly all states.
For remote workers and employers, the more relevant nexus type is still physical presence — but it's worth understanding the distinction:
- Physical presence nexus (relevant to remote workers): Based on where people physically work, own property, or otherwise have a tangible presence
- Economic nexus (primarily relevant for sales tax): Based on the volume of sales or revenue in a state, regardless of physical location
Some states have extended economic nexus concepts to income taxes for businesses, but for individual W2 employees, physical presence remains the primary nexus-creating activity.
How Domicile Differs From Residency
Domicile is a legal concept distinct from simple residency. Your domicile is the state you consider your permanent home — the place you intend to return to indefinitely. Domicile matters for estate planning and certain tax purposes, and it's possible to live in one state (residency) while maintaining legal domicile in another.
For most remote workers, domicile and residency align — you live and intend to permanently live in the same state. But for workers who spend extended time in multiple states, or who have recently moved, the distinction can matter. States define domicile factors differently, and some states (like New York and California) are particularly aggressive about claiming domicile for high-income residents who move away.
✓ Key Takeaway
As a remote worker, you generally establish nexus in your home state (residency) and potentially in any state where you physically work. The most important factor to check is whether your employer's state has a convenience-of-employer rule, which can override the standard physical-presence analysis and create unexpected tax obligations. Use the calculator to check your specific states.