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What is Source Income?

Income attributed to a specific state or country based on where the work was performed or where the income-producing asset is located.

Definition

Source income refers to income that is attributed to a particular state or country based on where the services were performed, where the property is located, or where the business activity occurred. Even non-residents may owe state taxes on income sourced to that state. For example, rental income from California property is California-source income even if the owner lives abroad. Understanding source rules is crucial for expats with US-based income streams.

Who Needs to Know This?

Non-residents with income from activities, property, or services in a specific state. US expats who retain US rental property, business interests, or perform work while visiting the US.

Key Deadline

Non-resident state returns due per state deadlines, typically April 15

Potential Penalties

Varies by state; penalties for failure to file non-resident return on source income

Related Forms

Non-resident state income tax returns

Common Mistakes to Avoid

  • 1Not filing non-resident state returns for rental income
  • 2Not knowing that work performed while visiting the US creates source income
  • 3Confusing source income rules between federal and state levels
  • 4Not allocating multi-state income correctly

Related Terms

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    Source Income: State Tax Rules for Non-Residents | Zenith Financial | Zenith Financial Advisors