Changes To State Income Taxes Since 2000

The graphic below shows how state income taxes have changed between 2000 and 2025. The gray states have no taxes. Changes are not compared for four states (Rhode Island, Vermont, North Dakota, and Colorado) since their 2000s tax rates were charged as a percentage of federal liabilities owed. As a result, they have been grayed out on the map

And the highest marginal income tax by state, shown below: