Hawaii’s Simple File Import (SFI) on Hawaii Tax Online (HTO) Form EF-20, Hawaii Simple File Import Reporting Agent Registration (Rev. 2021) Publication EF-12, Hawaii Tax Online – W-2 – Simple File Import (Rev. 10/2022) W-2 Worksheet for SFI (06-20-22) (XLSX) Publication EF-14, Hawaii Tax Online – General Excise, Transient Accommodations, and Withholding Periodic Tax Returns – Simple File Import (12/2023) Page Last Updated: December 18, 2023