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Hawaii Individual Income Tax Filing deadlines and extensions for 2025 for tax professionals.
If you have clients who are residents or have been involved in significant business operations within Hawaii, then they might be required to file Hawaii State Taxes. This page covers the most important tax deadlines and tax extensions for Hawaii in 2025.
If your clients are residents or have been involved in significant business operations within Hawaii, then they might be required to file Hawaii State Taxes. This page covers the most important tax deadlines and tax extensions for Hawaii in 2025.
Hawaii C Corporation Tax Deadlines for 2025
You must file and pay Corporate Income Taxes in Hawaii by April 20, 2026.
Extension to File Taxes in Hawaii for 2025
The Extension Deadline for Hawaii corporate income tax returns is October 20, 2026.
Hawaii automatically grants a six-month extension on filing corporate income tax returns. This means you do not need to file for an extension in Hawaii.
This is an extension to FILE, not an extension to PAY – payment is still due April 20, 2026.
Hawaii S Corporation & Partnership Tax Deadlines for 2025
You must file in Hawaii by April 20, 2026.
Extension to File S Corporation & Partnership Taxes in Hawaii for 2025
The Extension Deadline for Hawaii pass-through entity tax returns is October 20, 2026.
Hawaii automatically grants a six-month extension on filing pass-through entity tax returns. This means you do not need to file for an extension in Hawaii.
This is an extension to FILE, not an extension to PAY – payment is still due April 20, 2026.
Estimated Tax Deadline for Hawaii 2025
Estimated tax payments are due:
See Form N-1 instructions for the amount to pay with each voucher.
Individual Tax Deadline for Hawaii 2025
You must file and pay Individual Income Taxes in Hawaii by April 20, 2026.
Extension to File Taxes in Hawaii for 2025
The Extension Deadline for Hawaii individual income tax returns is October 20, 2026.
Hawaii automatically grants a six-month extension on filing personal income taxes. This means you do not need to file for an extension in Hawaii.
This is an extension to FILE, not an extension to PAY – payment is still due April 20, 2026.
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The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
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