Business Tax Deadlines

State filing information

Hawaii

Business tax filing in Hawaii: state returns, sales tax, other business taxes, and the federal dates that apply everywhere.

checked 2026-09-01Verified against Hawaii Department of Taxation. 6 sources.

Corporate income tax return

April 20
Corporation income tax return (Form N-30) must be filed on or before the 20th day of the fourth month following the close of the taxable year

Partnership / S corporation returns

April 20
Partnerships April 20; Same for S corporations

Sales tax return

None
general excise tax

Other business taxes

2 taxes
Franchise tax (Chapter 241, HRS) in lieu of net income and general excise taxes; Use tax (Chapter 238, HRS)

Hawaii Department of Taxation

Other business taxes

TaxWho owes itDue
Franchise tax (Chapter 241, HRS) in lieu of net income and general excise taxesBanks, building and loan associations, financial services loan companies, trust companies and similar financial corporationsReturns filed on or before the 20th day of the 4th month following the close of the taxable year
Use tax (Chapter 238, HRS)Persons importing or purchasing property/services from unlicensed out-of-state sellers for use in Hawaii; reported on the same G-45/G-49 forms as GETSame schedule as GET: 20th day of the month after the period; annual reconciliation 20th day of the 4th month

Rules in full

Corporate income tax

Corporation income tax return (Form N-30) must be filed on or before the 20th day of the fourth month following the close of the taxable year.

Extension. Automatic six-month extension to file without filing an application (HAR 18-235-98); not an extension to pay; pay with Form N-201V by the regular...

Partnerships and S corporations

Effective for taxable years beginning after December 31, 2022, partnerships and S corporations may elect to pay Hawaii income tax at the entity level (PTE taxation); the PTE elective rate for taxable years beginning after December 31, 2023 is 9%. See DOTAX Tax Information Releases 2023-03 and 2024-01.

General excise tax

Due date. Periodic GET returns (Form G-45) are due on or before the 20th day of the month following the close of the period (monthly, quarterly, or semiannual). Annual return and reconciliation (Form G-49) due on or before the 20th day of the 4th month following the close of the taxable year (April 20 for calendar year).

Filing frequency. Monthly if you will pay more than $4,000 in GET per year; may file quarterly if $4,000 or less per year; may file semiannually if $2,000 or less per year. Taxpayers whose annual GET liability does not exceed $100 are not required to file periodic G-45 returns (periods beginning after December 31, 2022) but still file the annual G-49.

Thresholds. Monthly > $4,000/yr; quarterly <= $4,000/yr; semiannual <= $2,000/yr; no periodic returns if <= $100/yr (effective 2023).

Prepayments. None stated; tax is paid with each periodic return.

Notes

Hawaii uses the 20th (not the 15th) for income tax returns and GET. The $100 no-periodic-return threshold took effect for periods beginning after December 31, 2022; the 9% PTE rate applies to taxable years beginning after December 31, 2023.

What we could not confirm. tax.hawaii.gov HTML pages returned HTTP 403 to the automated fetcher; facts were taken from the department's official PDFs on files.hawaii.gov (2024 G-45 instructions, 2024 N-30 instructions, 2025 tax outline) plus a curl of the homepage. N-20/N-35 due dates rest on the outline's general Chapter 235 statement rather than the N-20/N-35 instructions.

Federal dates that apply in Hawaii

  1. SEP15Tue
    Individuals & Sole Proprietors
    Q3 2026 estimated tax payment (Form 1040-ES)
  2. SEP15Tue
    Partnerships
    Form 1065 extended return (Form 7004), tax year 2025
  3. SEP15Tue
    S-Corporations
    Form 1120-S extended return (Form 7004), tax year 2025
  4. SEP15Tue
    C-Corporations
    Q3 2026 corporate estimated tax (Form 1120-W)
  5. OCT15Thu
    Individuals & Sole Proprietors
    Form 1040 extended return (Form 4868), tax year 2025
  6. OCT15Thu
    C-Corporations
    Form 1120 extended return (Form 7004), tax year 2025

All 2026 federal deadlines

Sources

  1. https://tax.hawaii.gov/ official
  2. https://files.hawaii.gov/tax/news/pubs/25outline.pdf official
  3. https://files.hawaii.gov/tax/forms/2024/n30ins.pdf official
  4. https://files.hawaii.gov/tax/forms/2024/g45ins.pdf official
  5. https://www.avalara.com/taxrates/en/state-rates/hawaii/hawaii-sales-tax-guide.html
  6. https://www.taxjar.com/sales-tax/states/hawaii

Checked 2026-09-01; researcher confidence 0.85. Corrections with a link to the state's own page: contact@businesstaxdeadlines.com.