HB2064

SECTION 1. The purpose of this Act is to offer financial assistance to owners of cesspools who:

(1) Upgrade or convert a cesspool into a septic system or an aerobic treatment unit system; or

(2) Connect a cesspool to a sewer system,

by establishing a cesspool upgrade, conversion, or connection income tax credit.

SECTION 2. Chapter 235, Hawaii Revised Statutes, is amended by adding a new section to part I to be appropriately designated and to read as follows:

"§235- Cesspool upgrade, conversion, or connection; income tax credit. (a) There shall be allowed to each taxpayer subject to the tax imposed under this chapter, a cesspool upgrade, conversion, or connection income tax credit that shall be deductible from the taxpayer's net income tax liability, if any, imposed by this chapter for the taxable year in which the credit is properly claimed.

(b) In the case of a partnership, S corporation, estate, or trust, the tax credit allowable is for qualified expenses incurred by the entity for the taxable year. The expenses upon which the tax credit is computed shall be determined at the entity level. Distribution and share of credit shall be determined by rule.

(c) The cesspool upgrade, conversion, or connection income tax credit shall be equal to the qualified expenses of the taxpayer, up to a maximum of $10,000; provided that, in the case of a residential large capacity cesspool, the amount of the credit shall be equal to the qualified expenses of the taxpayer, up to a maximum of $10,000 per residential dwelling connected to the cesspool, as certified by the department of health pursuant to subsection (e). There shall be allowed a maximum of one cesspool upgrade, conversion, or connection income tax credit per cesspool. The cesspool upgrade, conversion, or connection income tax credit shall be available only for the taxable year in which the taxpayer's qualified expenses are certified by the appropriate government agency.

(d) The total amount of tax credits allowed under this section shall not exceed $5,000,000 for all taxpayers in any taxable year; provided that any taxpayer who is not eligible to claim the credit in a taxable year due to the $5,000,000 cap having been exceeded for that taxable year shall be eligible to claim the credit in the subsequent taxable year.

(e) The department of health shall:

(1) Certify all cesspools for the purposes of this section; provided that, as a pilot program, the department of health, in its discretion, may certify no more than two residential large capacity cesspools;

(2) Collect and maintain a record of all qualified expenses certified by an appropriate government agency for the taxable year; and

(3) Certify to each taxpayer the amount of credit the taxpayer may claim; provided that if, in any year, the annual amount of certified credits reaches $5,000,000 in the aggregate, the department of health shall immediately discontinue certifying credits and notify the department of taxation.

The director of health may adopt rules under chapter 91 as necessary to implement the certification requirements under this section.

(f) The director of taxation:

(1) Shall prepare any forms that may be necessary to claim a tax credit under this section;

(2) May require the taxpayer to furnish reasonable information to ascertain the validity of the claim for the tax credit made under this section; and

(3) May adopt rules under chapter 91 necessary to effectuate the purposes of this section.

(g) If the tax credit under this section exceeds the taxpayer's income tax liability, the excess of the credit over liability may be used as a credit against the taxpayer's income tax liability in subsequent years until exhausted. All claims for the tax credit under this section, including amended claims, shall be filed on or before the end of the twelfth month following the close of the taxable year for which the credit may be claimed. Failure to comply with the foregoing provision shall constitute a waiver of the right to claim the credit.

(h) This section shall not apply to taxable years beginning after December 31, 2032.

(i) As used in this section:

"Aerobic treatment unit system" means an individual wastewater system that consists of an aerobic treatment unit tank, aeration device, piping, and a discharge method that is in accordance with rules adopted by the department of health relating to household aerobic units.

"Cesspool" means an individual wastewater system consisting of an excavation in the ground whose depth is greater than its widest surface dimension, which receives untreated wastewater, and retains or is designed to retain the organic matter and solids discharged into it, but permits the liquid to seep through its bottom or sides to gain access to the underground geographic formation.

"Qualified expenses" means costs that are necessary and directly incurred by the taxpayer for upgrading or converting a cesspool into a septic system or an aerobic treatment unit system, or connecting a cesspool to a sewer system, and that are certified as such by the appropriate government agency.

"Residential large capacity cesspool" means a cesspool that is connected to more than one residential dwelling.

"Septic system" means an individual wastewater system that typically consists of a septic tank, piping, and a drainage field where there is natural biological decontamination as wastewater discharged into the system is filtered through soil.

"Sewer system" means a system of piping, with appurtenances, for collecting and conveying wastewater from source to discharge following treatment.

"Wastewater" means any liquid waste, whether or not treated and whether animal, mineral, or vegetable, including agricultural, industrial, and thermal wastes."

SECTION 3. New statutory material is underscored.

SECTION 4. This Act shall take effect upon its approval, and shall:

(1) Apply to taxable years beginning after December 31, 2027; and

(2) Be repealed on December 31, 2032.

INTRODUCED BY:	_____________________________
	By Request

HOUSE OF REPRESENTATIVES	H.B. NO.	2064
THIRTY-THIRD LEGISLATURE, 2026
STATE OF HAWAII