A List of State Income Tax Rates

Ever wonder how your state's income tax rates compare to other states? You'll find some of the highest rates in California, Hawaii, Oregon, Minnesota, and New Jersey. At the other end of the scale, seven states have no tax on earned income at all in 2018. Another eight have a flat tax rate—everyone pays the same rate regardless of income.

Alaska, Florida, Nevada, South Dakota, Texas, Washington, and Wyoming do not impose an income tax. Tennessee and New Hampshire fall into a gray area. They don't levy an income tax on earned income, but they do tax interest and dividends.

Tennessee gets you in other ways, however. It has one of the highest combined state and local sales tax rates in the country. Your paycheck might be safe, but you'll be dinged at the cash register. And New Hampshire is known for its exorbitant property taxes. Texas and Nevada have high property taxes, too. Washington charges a significant tax on gasoline, and Florida is known for both high property taxes and a pretty significant sales tax.

Wyoming and Alaska are the kindest states, at least for resident taxpayers. They take in a lot of revenue from taxation of their natural resources.

Among the states that do have income taxes, many residents get a break because the highest rates don't kick in until upper-income levels. But this isn't the case in the eight states that have flat tax rates. These jurisdictions don't care how much you earn.

Flat tax states include:

• Colorado
• Illinois
• Indiana
• Massachusetts
• Michigan
• North Carolina 
• Pennsylvania
• Utah 

The remaining states and the District of Columbia charge a "progressive" tax on all income. The more you earn, the higher percentage you'll pay in income tax. California's top rate is 13.3 percent, but only if you earn more than $1 million. Below is a breakdown of all the state income tax rates.

These are the rates and the income thresholds for single filers as of January 1, 2018:

• Alabama: 2 to 5 percent. The highest rate applies to incomes over $3,000. 
• Arizona: 2.59 to 4.54 percent. The highest rate applies to incomes over $152,668.
• Arkansas: .9 to 6.9 percent. The highest rate applies to incomes over $35,100. 
• California: 1 to 13.3 percent. The highest rate applies to incomes over $1,000,000.
• Connecticut: 3 to 6.99 percent. The highest rate applies to incomes over $500,000.
• Delaware: 2.2 to 6.6 percent. The highest rate applies to incomes over $60,000.
• Georgia: 1 to 6 percent. The highest rate applies to incomes over $7,000.