Hawaii's top marginal state income tax rate is 11%. State tax is progressive here, so most filers pay an effective rate well below the top figure — the calculator applies a blended approximation rather than modeling the full bracket schedule.
Lowest effective property tax rate in the nation, highest home prices. Statewide median household income is $95,000, which is the default loaded above.
Remember that a state with no income tax is not automatically cheaper overall. Hawaii has an effective property tax rate of 0.29% and average homeowners insurance of $1,400 a year — states without wage income tax typically recover revenue through property or sales taxes.