Hawaii Tax Deadlines: Individual & Corporate Filing Guide

Hawaii Tax Deadlines: Individual & Corporate Filing Guide

Check Hawaii tax deadlines for individuals and C Corporations. Confirm due dates, extension rules, and exemptions for S Corps and Partnerships.

Hawaii imposes both income tax and general excise tax, creating layered compliance.

Hawaii Tax Deadlines at a Glance (2026)

Entity Type

Return Due

Extension Deadline

Individuals

April 20, 2026

October 20, 2026

C Corporations

April 20, 2026

October 20, 2026

S Corporations

March 23, 2026

September 23, 2026

Partnerships

March 23, 2026

September 23, 2026

Individuals

Hawaii deadlines are later than federal.

Businesses

General Excise Tax (GET) filings may be required monthly, quarterly, or annually.

Fiscal-Year Entities

Due dates follow months after year-end, adjusted for Hawaii-specific deadlines.

‹ Idaho Tax Deadlines: Individual & Corporate Filing Guide

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Customer Stories

Trusted by firms across the board

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Tax Manager

Sama Tributa

"80% faster first drafts. What used to take us two days is now done in two hours."

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Customer Stories

Trusted by firms across the board

"Research used to be a black hole. Now, I just type the question and get a citable IRS answer in seconds."

Tax Manager

Sama Tributa

"80% faster first drafts. What used to take us two days is now done in two hours."

Managing Partner

Northbridge Tax Advisory