Honolulu County sales tax rate, Hawaii
Quick answer
Combined sales tax in Honolulu County runs 4.5% across the cities we cover, on top of Hawaii's 4% state rate. The county share is a separate line from any city or special-district increment, which is why two addresses in the same county can pay different totals.
Cities in Honolulu County
County share shown separately from the city and district layers.
| City | State | County | City + districts | Combined |
|---|---|---|---|---|
| Honolulu | 4% | 0.5% | 0% | 4.5% |
Source: Hawaii Department of Taxation · rates as published for 2026