Haw. Rev. Stat. § 231-40.5
(a) Notwithstanding any other law to the contrary limiting the time for assessment of any tax, if a taxpayer omits an amount of:
(5) Gallonage, tonnage, cigarette count, day, or other weight or measure applicable to any tax,
properly includable therein that is in excess of twenty-five per cent of the amount stated in the return, the tax may be assessed or a proceeding in court with respect to the tax without assessment may be begun without assessment, at any time within six years after the return was filed.
[L 2009, c 166, §5]