Every year, millions of Americans complain about paying a second tax alongside their federal income tax—the state income tax. Yet this tax quietly funds the roads you drive on, the schools your children attend, and the public services that make your neighborhood livable. Understanding which states require it can help you make smarter choices about where to live and work.
A state income tax is a levy imposed by state governments on personal earnings. Unlike the federal tax, which funds national programs, state income tax goes directly toward local initiatives such as infrastructure, healthcare, and education. Its key purpose is to generate revenue that addresses community needs without relying solely on federal funding.
Of the 50 U.S. states, 41 states plus the District of Columbia currently impose some form of income tax. The remaining states—Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming—do not levy a personal income tax, instead relying on sales tax, property tax, or natural resource revenue.
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Among those with an income tax, most use a graduated structure, meaning higher earners pay a larger percentage. States like Taxachusetts (as Massachusetts is colloquially called) and California have among the highest rates, while states such as Pennsylvania and North Dakota keep rates comparatively low. A few states, like Illinois, apply a flat rate regardless of income level.
Individual Income Taxes Archives | Tax Foundation
For everyday life, this tax difference matters significantly. A software engineer earning $90,000 in Texas takes home noticeably more than the same worker in California. Conversely, residents in tax-free states may face higher sales or property taxes, narrowing the practical gap. The trade-off is never simply "no tax equals more money."
To explore this topic on your own, start by visiting your state's department of revenue website. Compare neighboring states' tax brackets using tools like the Tax Foundation's income tax map, and consult with a tax professional before relocating to ensure you understand the full financial picture.
