Hawaii Business Tax Extension 2026: 2025 Tax-Year Filing Guide
LLC & Partnership · S Corporation · C Corporation · Fiduciary
This guide explains how to file a Hawaii (HI) business tax extension for each entity type. Hawaii generally grants an automatic six-month filing extension when the required payment conditions are satisfied. For the federal filing process, see our IRS Form 7004 filing guide.
Need a pro? Connect with a U.S.-based CPA or EA to prepare and file your HI return.
Remember, payment is still due by the original deadline. In other words, extensions only extend filing time.
Hawaii (HI) rules depend on entity type. Next, confirm the entity’s classification, file the required extension or retain federal proof when applicable, and pay required tax by the original deadline.
Hawaii LLC Tax Extension: Filing Details
For a 2025 calendar-year filer, the extended filing deadline is October 20, 2026. Follow the Hawaii return and extension method shown below.
In addition, the extension applies to filing time only. Therefore, pay required Hawaii tax by the original deadline to limit penalties and interest.
The extension applies to filing time only. Pay required Hawaii tax by the original deadline to limit penalties and interest.
Hawaii S Corporation Tax Extension: Filing Details
For a 2025 calendar-year filer, the extended filing deadline is October 20, 2026. Follow the Hawaii return and extension method shown below.
Hawaii C Corporation Tax Extension: Filing Details
For a 2025 calendar-year filer, the extended filing deadline is October 20, 2026. Follow the Hawaii return and extension method shown below.
The extension applies to filing time only. Pay required Hawaii tax by the original deadline to limit penalties and interest.
The extension applies to filing time only. Pay required Hawaii tax by the original deadline to limit penalties and interest.
Fiduciary, Estate, and Trust Filing Details
For a 2025 calendar-year filer, the extended filing deadline is October 20, 2026. Follow the Hawaii return and extension method shown below.
Quick Reference: Deadlines and Forms
The table below provides a quick reference to Hawaii business tax extensions and filing deadlines.
| Entity Type | HI Return Form | Extension Method | Extended Deadline |
|---|---|---|---|
| LLC / Partnership | Form N-20 | Automatic six-month extension; N-201V | Oct. 20, 2026 |
| S Corporation | Form N-35 | N-201V | Oct. 20, 2026 |
| C Corporation | Form N-30 | N-201V | Oct. 20, 2026 |
| Fiduciary / Estate / Trust | Form N-40 | Form N-201V | Oct. 20, 2026 |
Frequently Asked Questions
Quick answers about Hawaii business tax extensions – but always confirm the current rules with the Hawaii Department of Taxation.
Visit Hawaii Department of TaxationYes. For 2025 calendar-year returns, Hawaii generally grants an automatic six-month filing extension to October 20, 2026. The return-specific requirements still apply, and required payment remains due by April 20, 2026. If you need an individual rather than business extension, see our Hawaii individual tax extension page.
Generally no. In other words, pay required tax by the original deadline and confirm the current state payment rules. An extension of time to file does not extend the time to pay – failing to pay by the original deadline can result in penalties and interest, even if the return is filed within the extended window.
No. In practice, partnerships, S corporations, C corporations, and fiduciaries can use different original dates, extension periods, or forms. For 2025 calendar-year returns filed in 2026, business and fiduciary returns generally receive an automatic six-month filing extension to October 20, 2026, provided the required payment conditions are met.
Review the Hawaii Department of Taxation guidance for the entity’s return. Additionally, the DOR publishes the most current forms (N-201V, Form N-40, etc.) and any changes to extension periods or payment thresholds.
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