Disclaimer

WattWise is an independent publisher, not affiliated with or endorsed by the Internal Revenue Service, U.S. Department of Energy, Energy Information Administration, National Renewable Energy Laboratory, a utility, or any other agency named here. This site is not a contractor, installer, utility, or tax adviser. Calculator outputs are estimates based on user-supplied inputs and are not legal, tax, insurance, or financial advice.

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No federal tax credit is assumed for solar, heat pumps, efficiency upgrades or EVs. IRS pages state that the applicable residential clean-energy and efficiency credits cover qualifying activity through 2025, and clean-vehicle credits apply to vehicles acquired on or before September 30, 2025. Check current IRS material and state, local and utility programs directly. Rates and export-credit rules vary and change. General safety information is not a substitute for equipment instructions or local codes.