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State Tax Calculator

Created by Tibor Pál, PhD candidate
Reviewed by Wei Bin Loo and Adena Benn
Based on research by;
Last updated: Jan 18, 2024

Our state tax calculator (income tax calculator by state) helps you to estimate the state tax on your income and see how state tax brackets are applied. With this tool, you can calculate state tax wherever you live in the US and check the applicable state tax brackets for 2021 or 2022.

In this article, you can not only check how the present state income tax calculator works, but you can also learn a few interesting things, such as:

  • What is state income tax?
  • What states have no income tax?
  • What are the income tax rates by state?

If you would like to learn more about tax brackets applied by the Federal government, check our tax bracket calculator or the income tax calculator.

What is state income tax?

State income tax is a direct tax collected by U.S. states on income materialized in a given state. In other words, state income tax is a percentage of the income you pay to the state authority based on your earnings and applicable tax brackets.

While state income tax typically absorbs a smaller portion of your income relative to the federal income tax, it can still considerably augment your final tax obligation.

How does state income tax work?

In general, there are two different methods for determining state income tax based on the state where you live. Besides, some states don't levy state income tax at all.

  1. Flat tax rates:

    In this case, the tax authority determines the tax with a fixed rate; that is, the income tax percentage is constant regardless of your income. For example, if you live in Colorado, the state imposed a 4.5% tax rate on your taxable income declared in 2011, no matter how much you earned. If your taxable income is $100,000, your state income tax is $4,500. And if your income is $1 million, your tax obligation is still 4.5% or $45,000.

    Only ten states apply a flat tax rate on incomes. These include Colorado, Illinois, Indiana, Kentucky, Massachusetts, Michigan, New Hampshire, North Carolina, Pennsylvania, and Utah.

  2. Progressive tax or graduated tax rates:

    This approach applies multiple tax rates associated with different ranges of income or tax brackets. That means people with higher taxable incomes pay a higher portion of income tax from their income. For example, Mississippi applies two tax rates on income declared in 2022. You must pay 4% on taxable income between $5,000 and $10,000, but if your taxable income exceeds $10,000, you must already pay a 5% rate on the part exceeding this threshold.

  3. States without income tax:

    There are eight states without income tax levied. These are Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming.

How can I use the state income tax calculator?

To run our state tax calculator, you must simply set the following parameters.

  1. Taxable income — Write here the annual income subject to state income tax — you may apply our annual income calculator at this point.

  2. Year of income — Choose the year of your income.

  3. Where do you live? — Select the state in which your tax obligation occurs.

  4. What is your filing status? — Choose between single filer and married filer.

  5. Number of additional dependents.

You can read the results immediately in two different tables when you set all the above parameters.

  • In the first table, you can study the derivation of the final state tax amount from your taxable income, indicating all types of deductions.
  • The second table represents the state-dependent tax brackets applied to your income.


What states have no income tax?

There are eight states with no income tax as of 2022. The states where you don't have state income tax obligations are Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming.

Can a state income tax rate be zero?

Yes. There are states where the state income tax rate is zero below a given threshold. For example, in Mississippi, for the part of your income below $5,001 earned in 2022, you don't need to pay state income tax; that is, the income tax rate is 0% in that tax bracket.

How to determine state income tax?

Follow the below steps to find out your state income tax:

  1. Find out your annual taxable income.
  2. Adjust it by any applicable deduction and exemptions (a certain amount by which the taxable income is reduced).
  3. Apply the relevant tax brackets with the corresponding state income tax rates.
  4. Sum up the income taxes determined in each state's income tax brackets.

How much is the state income tax in California if my income is $30,000 in 2022?

The estimated state income tax on your income is $343 if you earn $30,000 in California in 2022 if we consider the tax credit of $129 and you are a single filer without additional dependents.


You should consider the state tax calculator as a model for financial approximation. All payment figures, balances, and interest figures are estimates based on the data you provided in the specifications that are, despite our best effort, not exhaustive. In addition, the calculator potentially omits information relevant to determining personal state income taxes.

For these reasons, we created the calculator for instructional purposes only. Still, if you experience a relevant drawback or encounter any inaccuracy, we are always pleased to receive useful feedback and advice.

Tibor Pál, PhD candidate
Adjusted Gross Income (AGI)
Year of income
Where do you live?
What is your filing status?
Single filer
Number of additional dependent(s)
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