HONOLULU S-CORPORATION TAX FILING in OAHU, HAWAII - Diamond Head Tax Group - Call: 808-468-8041
- Diamond Head Tax Group OAHU Blogger
- Mar 18
- 5 min read
2025 Hawaii State Tax Deadlines
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.
Hawaii Business Tax Deadlines for 2025
Pass-Throughs
Hawaii S Corporation & Partnership Tax Deadlines for 2025
You must file in Hawaii by April 20, 2026.
File Online with Hawaii Tax Online
File by Mail must be postmarked by the due date
Form 1: N-35 – S-Corporation Income Tax Return
Form 2: N-20 – Partnership Return of Income
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.
C Corporation
Hawaii C Corporation Tax Deadlines for 2025
Hawaii C Corporation Tax Deadlines for 2025
File Online with Hawaii Tax Online
File by Mail must be postmarked by the due date
Form N-30 – Hawaii Corporation Income Tax Return
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 Individual Tax Deadlines for 2025
Estimated Tax Deadline for Hawaii 2025
Estimated tax payments are due:
April 21, 2025
June 20, 2025
September 22, 2025
January 20, 2026
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.
File Online with Hawaii Tax Online
File by Mail must be postmarked by the due date
Form 1: N-11 – Residents
Form 2: N-15 – Nonresidents or Part-Year Residents
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.
Sources
Diamond Head Tax Group OAHU offers Tax Filing Assistance for S-Corporation Income Tax for Business Owners and Individuals in Honolulu, Diamond Head, Waikiki, Kapolei, and Pearl City
HONOLULU, OAHU, HAWAII
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Honolulu, Hawaii's capital, is a lively city celebrated for its blend of cultural heritage, contemporary amenities, and flourishing business environment. It acts as a center for local enterprises, particularly in tourism, retail, food, and technology sectors.
Diamond Head Tax Group OAHU offers Tax Filing Services for Individuals and Business Owners S-Corporation Income Tax Return in Honolulu 96701, 96706, 96707, 96709, 96712, 96717, 96730, 96731, 96734, 96744, 96759, 96762, 96782, 96786, 96789, 96791, 96792, 96795, 96797, 96801, 96802, 96803, 96804, 96805, 96806, 96807, 96808, 96809, 96810, 96811, 96812, 96813, 96814, 96815, 96816, 96817, 96818, 96819, 96820, 96821, 96822, 96823, 96824, 96825, 96826, 96828, 96830, 96836, 96837, 96838, 96839, 96840, 96841, 96843, 96844, 96846, 96847, 96848, 96849, 96850, 96853, 96854, 96857, 96858, 96859, 96860, 96861, 96863, 96898. If you are planning to schedule an appointment, contact us at 808-468-8041 and speak with one of our Trusted Tax Consultant Expert.
DIAMOND HEAD, OAHU, HAWAII
96815
Diamond Head, southeast of Honolulu, is a famous Oahu landmark known for its unique crater, stunning views of Waikiki and the Pacific Ocean, and hiking trails. The area also hosts businesses and a local community serving residents and visitors.
As Diamond Head 96815 Trusted Source of Filing Taxes, we ensure our Individual and Business clients that we offer exceptional tax filing services for your S-Corporation Income Tax Return documents. We also offer other tax and accounting services such as tax planning and preparation, charitable tax planning strategies, and more. To learn more about Diamond Head Tax Group OAHU, call us today for more information.
WAIKIKI, OAHU, HAWAII
96815, 96816, 96817, 96818
Waikiki, situated in Honolulu on Oahu, is renowned as one of the island's most iconic neighborhoods. Celebrated for its lively ambiance, beautiful beaches, and historical significance, it is a dynamic area that acts as a central point for tourism and local activities.
Diamond Head Tax Group OAHU is a Honolulu locally owned and operated business that offers S-Corporation Income Tax Return Tax Filing Assistance for individuals and small and medium business owners in Waikiki, HI 96815, 96816, 96817, 96818. Our Tax Consultant Professionals also offers competitive and reasonable rates, as well as, flexibility that works around your schedule.
KAPOLEI, OAHU, HAWAII
96707, 96709
Kapolei, on Oahu's west side, is known as Honolulu's "second city," offering suburban living, commercial growth, and local culture. It has recently expanded with new businesses, housing, and community facilities attracting residents and newcomers.
As Honolulu continues to expand, Diamond Head Tax Group OAHU continues to be Kapolei 96707, 96709 local's trusted CPA firm offering S-Corporation Income Tax Return Tax Filing Services. We also help individuals and businesses with tax advisory and payroll services. Choose Diamond Head Tax Group for the best solution of tax advisory, strategy, and payroll. Contact us at 808-468-8041 and schedule an appointment.
PEARL CITY, OAHU, HAWAII
96782
Pearl City, on Oahu, is a central suburb of Honolulu, positioned between the southern coast and the island's center. It's a key residential, commercial, and historical area with a strong community and growing businesses.
Diamond Head Tax Group OAHU offers a wide range of tax services for individuals and businesses in Pearl City 96782. Our tax services includes Tax Preparation, Tax Planning, Sales Tax Preparation, Professional Payroll Services, Small Business Strategy, Roth IRA Conversion, Charitable Tax Planning, QuickBooks set up, Social Security Taxation Reduction, and many more. Call us today to schedule an appointment.
Contact us and let our skilled OAHU Tax Experts offer their well-rounded tax advice and tailored tax solutions to help you file accurate tax reports. Diamond Head Tax Group is Honolulu's trusted source of tax filing services serving Waianae, Honolulu, Kapolei, Oahu and surrounding areas.
Diamond Head Tax Group - S-Corporation Income Tax Filing
We are available to assist you with your Tax Needs.
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