Hawaii has a marginal corporate tax rate that ranges from 4.4% to 6.4% depending on the amount of income the corporation makes. The tax rate is 4.4% for income up to $25,000. For income that is from $25,001 to $100,000, the tax rate rises to 5.4%. As for income higher than $100,000, the tax rate increases to 6.4%, minus $1,250. The island state has one free trade zone in the capital and largest city, Honolulu. Hawaii has 22 credits and incentives established for companies located there. The Quality Farmer Program, Organic Foods Production Tax Credit, and the Research Tax Credit are some examples.