What is the argument commonly used by supporters of a state income tax?

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Supporters of a state income tax commonly argue that it is a fairer and more reliable source of revenue compared to other sources such as sales tax. Income tax is progressive, meaning that people with higher incomes pay more in taxes, while sales tax is regressive as it imposes the same rate on everyone regardless of income level. This makes income tax fairer. Additionally, income tax revenue is more reliable as it is not affected by fluctuations in consumer spending, which can impact sales tax revenue.

What Is the Argument Commonly Used by Supporters of a State