Hawaii tax deadlines in 2025: filing dates and estimated payments
Deadlines that fall in calendar 2025: the 2024 return and the 2025 estimated payments. Different year? See Hawaii 2026 →
Hawaii deadlines in 2025
| 2024 individual return due | April 20, 2025 |
|---|---|
| Extended filing deadline | October 20, 2025 |
| Payment due | April 20, 2025, extension or not |
| Final 2024 estimated payment | January 20, 2025 |
| 2025 estimated payments | April 20, 2025 · June 20, 2025 · September 20, 2025 · January 20, 2026 |
Individual returns are due April 20 (not April 15). Automatic 6-month extension to October 20 if properly estimated tax is paid by April 20. Estimated payments fall on the 20th.
Hawaii estimated tax payments in 2025
Hawaii estimated payments for the 2025 tax year follow the standard schedule: April 20, 2025, June 20, 2025, September 20, 2025, January 20, 2026. Confirm the current-year voucher and any state-specific threshold with the Hawaii tax agency.
Source: tax.hawaii.gov.
Hawaii extensions
An extension moves the Hawaii filing deadline to October 20, 2025. It does not move the payment date: pay what you expect to owe by April 20, 2025. Confirm with the Hawaii tax agency whether the federal extension is honored automatically or a state form is required.
Federal deadlines in 2025
| 2024 Form 1040 | April 15, 2025 · extension October 15, 2025 |
|---|---|
| 2024 S-corp (1120-S) & partnership (1065) | March 17, 2025 |
| 2024 C-corp (Form 1120) | April 15, 2025 |
| 2025 federal estimated payments (1040-ES) | April 15, 2025 · June 16, 2025 · September 15, 2025 · January 15, 2026 |
Source: IRS Publication 509 and Form 1040-ES instructions, irs.gov.
Frequently asked questions
When are Hawaii state taxes due in 2025?
Your 2024 Hawaii individual income tax return is due April 20, 2025. If that date falls on a weekend or legal holiday, the deadline moves to the next business day. An extension moves the filing deadline to October 20, 2025, but any tax owed is still due on the original date.
When are Hawaii estimated tax payments due in 2025?
Hawaii estimated payments for the 2025 tax year are due April 20, 2025, June 20, 2025, September 20, 2025, January 20, 2026. The final installment for 2024 was due January 20, 2025.
Does Hawaii accept the federal extension?
An extension moves the Hawaii filing deadline to October 20, 2025. It does not extend the time to pay: pay what you expect to owe by April 20, 2025 to avoid penalties and interest.
Does a Hawaii extension give me more time to pay?
No. An extension extends the time to file, not to pay. To avoid penalties and interest, pay what you expect to owe by April 20, 2025.
Dates are the statutory deadlines that fall in 2025 and move to the next business day when they land on a weekend or holiday. Each section links to the source it was checked against. Always confirm with the Hawaii tax agency or the IRS before relying on a date. This is general information, not tax advice.