Hawaii corporate income tax return

File the Hawaii corporate income tax return with the Hawaii Department of Taxation by the 20th day of the 4th month after the fiscal year ends (April 20 for a calendar year) and pay any tax due. Most states follow the federal extension if one is filed.

When: By the 20th day of the 4th month after the fiscal year ends (April 20 for a calendar year).
Agency: Hawaii Department of Taxation
Applies to: C corporations registered in Hawaii.
Source: tax.hawaii.gov, read October 22, 2026

Jay explains

Hawaii taxes corporate income, so a C corporation doing business there files a state return with the Hawaii Department of Taxation by the 20th day of the 4th month after the fiscal year ends (April 20 for a calendar year), later than the federal Form 1120. The state usually honors a federal extension to file, but not to pay. The form name and any minimum tax are on the state's site.

Next dates

For a calendar year company. Shown as the agency states them; if a date falls on a weekend, file before it.

April 20, 2027
April 20, 2028

Also in Hawaii

Hawaii annual report Hawaii annual report Hawaii annual report Hawaii nonprofit annual report Hawaii charitable organization annual financial report Hawaii general excise tax annual return Hawaii corporate estimated tax payment Hawaii pass through entity return Hawaii personal income tax return with business income Hawaii unemployment insurance wage report Hawaii annual withholding reconciliation Hawaii temporary disability insurance

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Three answers to start. Refine it after.

What kind of organization is it?

An LLC's tax treatment decides which federal return it files. Choose the line that matches yours. Nonprofits are covered too.

State of formation

Employees

Count everyone on payroll. An S corporation's working owners are employees: they are paid a salary.

Where is it based? The state of the office, or of most of the people

A company based outside its state of formation is registered in both and files in both.

More about the company: other states, payroll, dates, abroad

Company name

Date registered in each other state

Optional. Some states key their report to the day you registered there rather than your date of formation; without it, the formation date stands in and the calendar says so.

Who runs payroll?

Fiscal year ends in

Date of formation

Hawaii keys its report to this date. Add it and the calendar places it.

Annual revenue

Some taxes start at a revenue threshold.

We pay independent contractors We offer a retirement plan (401(k), SIMPLE, SEP)

Outside the United States We hold a bank or financial account outside the US A person or company outside the US owns 25% or more of it We own 10% or more of a company outside the US We pay people or companies outside the US

Each adds the FinCEN or IRS form that comes with it: the FBAR, Form 5472, Form 5471, Forms 1042 and 1042-S.

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