Deduction For Energy-Conserving Investment
Administered by: Montana Department of Revenue
Quick Summary
Montana allows you to deduct up to $1,800 from your state income taxes for energy-conserving improvements to your home, such as insulation, windows, doors, programmable thermostats, or weather-stripping. To claim this deduction, you must report the cost of qualifying capital investments on your Montana corporate income tax return (Form CIT) and follow the instructions provided in the annual Form CIT Instructions booklet.
AI-generated summary • Updated 7/12/2026
Program Details
- Program ID
- 1158
- Last Updated
- 3/27/2026
Eligibility
Program Summary
A corporation may deduct a portion of the cost of a capital investment in a building that promotes energy conservation. If the building is a residence, the taxpayer may deduct up to $1,800; if the building is non-residential, the deduction may be up to $3,600. Energy conservation is defined as reducing the waste or dissipation of energy or reducing the amount of energy required to accomplish a given quantity of work. New construction must surpass established standards of new construction to be eligible for this deduction.
Contact & Resources
Please verify current program details with the administering agency before making any financial decisions.