Specifications for Software Developers Income – Tax Year 2025 Intent to Participate in the Hawaii MeF Program Hawaii Software Developers and Transmitters Handbook for Modernized e-File Hawaii Software Developers and Transmitters Handbook for Business Modernized e-File Income – Tax Year 2024 Intent to Participate in the Hawaii MeF Program Hawaii Software Developers and Transmitters Handbook for Modernized e-File Hawaii Software Developers and Transmitters Handbook for Business Modernized e-File Income Tax Year 2023 Intent to Participate in the Hawaii MeF Program Hawaii Software Developers and Transmitters Handbook for Individual Modernized e-File Hawaii Software Developers and Transmitters Handbook for Business Modernized e-File Page Last Updated: January 15, 2026
