Weekly Map: Top State Corporate Income Tax Rates March 26, 2013 Nick Kasprak Nick Kasprak This week's map shows the top corporate income tax rate in each state. Iowa has the highest rate at 12%; three states, (Nevada, South Dakota, and Wyoming) have no corporate income tax. Click on the map to enlarge it. View previous maps here. Stay informed on the tax policies impacting you. Subscribe to get insights from our trusted experts delivered straight to your inbox. Subscribe Share Tweet Share Email Topics Center for State Tax Policy Business Taxes Corporate Income Taxes Individual Income and Payroll Taxes Tags State Tax and Spending Policy