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If you have been researching energy-efficient windows in 2026, you have probably seen outdated articles claiming that homeowners can still receive a federal tax credit for installing qualifying replacement windows.
That information is no longer correct for new 2026 installations.
The federal Energy Efficient Home Improvement Credit under Section 25C was terminated for property placed in service after December 31, 2025. The IRS confirms that the credit applied to qualifying improvements through 2025, with exterior windows and skylights subject to a $600 annual limit within the credit's overall rules.
That does not mean every window incentive disappeared. In 2026, homeowners in New York, New Jersey, and Connecticut may still have access to state, utility, or program-specific incentives.
Eligibility can depend on where you live, your utility provider, the type of property, and the window specifications.
This distinction matters. A federal tax credit and a state or utility rebate are not the same thing, and eligibility requirements can change independently.
If you are planning a window replacement project, do not rely on a generic "2026 window tax credit" article published before the federal changes. Check the current program requirements before assuming an incentive applies to your project.
The federal Section 25C credit is no longer available for qualifying property placed in service after December 31, 2025.
The IRS specifically states that the Energy Efficient Home Improvement Credit cannot be claimed for property placed in service after that date.
This means homeowners planning a new window replacement in 2026 should not automatically budget around a federal window tax credit.
The expiration of a federal tax credit does not automatically eliminate every state or utility incentive.
Some programs continue to support energy-efficiency improvements through rebates, financing, or targeted assistance.
However, these programs may have specific eligibility rules involving:
This is why homeowners should evaluate the actual program requirements rather than simply asking whether "windows qualify for a tax credit."
New York continues to support energy-efficiency improvements through programs administered by organizations such as NYSERDA.
For example, NYSERDA's Comfort Home program currently includes high-performance windows as a potential add-on to qualifying home efficiency packages.
The program lists a $2,000 window add-on incentive when the home's required air sealing and insulation upgrades have been completed.
NYSERDA also operates income-qualified programs. EmPower+ covers eligible energy-efficiency improvements for qualifying households, with different incentive levels depending on household income and location.
Downstate counties include Kings County, where Brooklyn is located, as well as New York, Queens, Bronx, Richmond, and Westchester counties.
The important point: New York incentives are not simply a replacement for the expired federal tax credit. Eligibility depends on the specific program and project.
New Jersey's energy-efficiency landscape includes utility and state-supported programs, but homeowners should be careful with older articles that describe discontinued or previously offered window incentives as if they were automatically available in 2026.
Program availability, eligibility, and eligible measures can change. A window replacement should therefore be evaluated based on the homeowner's current utility program and the exact product being installed.
For New Jersey projects, verify the current incentive directly with the applicable program or utility before including a rebate in your project budget.
This is particularly important for contractors preparing estimates because promising a rebate that the customer does not actually qualify for can create confusion and undermine trust.
Connecticut provides one of the clearest examples of why the end of the federal credit does not mean all window incentives disappeared.
Energize Connecticut currently offers a $100-per-window rebate for qualifying ENERGY STAR certified triple-pane replacement windows.
The program runs from January 1 through December 31, 2026. Eligible customers include certain residential customers of Eversource and United Illuminating, subject to program requirements.
The current program specifically applies to replacement windows in existing homes and requires qualifying ENERGY STAR triple-pane products. New construction windows do not qualify under this particular incentive.
This is an important example of why product specifications matter.
A window is not automatically eligible simply because it is marketed as "energy efficient." The exact glass configuration, certification, U-factor, property type, and installation circumstances can determine eligibility.
Not for qualifying window property placed in service after December 31, 2025. The federal Energy Efficient Home Improvement Credit was terminated for new qualifying property after that date.
Yes, certain New York programs continue to support high-performance windows. NYSERDA's Comfort Home program includes a window add-on incentive for qualifying homes that meet the program's required air-sealing and insulation conditions. Other income-qualified programs may also support energy-efficiency improvements.
Yes. Energize Connecticut currently offers a $100-per-window incentive for qualifying ENERGY STAR certified triple-pane replacement windows for eligible residential customers of participating utilities. The current incentive period runs through December 31, 2026.
Not necessarily. Incentive programs can have additional requirements involving the type of replacement, property, utility provider, installation date, product specifications, and other eligibility conditions.
The federal Section 25C Energy Efficient Home Improvement Credit was accelerated to end for property placed in service after December 31, 2025. The change was enacted through the 2025 federal legislation commonly referred to as the One Big Beautiful Bill Act.
No. Incentives should be considered as part of the overall project economics, not as the primary reason to select a particular window.
Performance, U-factor, glazing configuration, frame material, durability, certifications, installation quality, and long-term energy savings should all be evaluated before making a decision.
To better understand how energy-efficient window and storefront decisions can affect heating and cooling costs, read our guide Energy-Efficient Storefronts: Reducing HVAC Costs in Commercial Buildings.
The biggest window incentive mistake in 2026 is assuming that information written before the federal changes still applies today.
The federal Energy Efficient Home Improvement Credit for qualifying windows ended after December 31, 2025, but state and utility programs continue to create potential savings opportunities in parts of New York, New Jersey, and Connecticut.
For New York homeowners, programs such as NYSERDA's Comfort Home and EmPower+ may provide assistance for qualifying energy-efficiency improvements. Connecticut currently offers a $100-per-window incentive for qualifying ENERGY STAR triple-pane replacement windows through Energize Connecticut. New Jersey homeowners should verify current utility and state program availability before assuming a window rebate applies.
Window performance still matters even when a tax credit does not apply.
Energy-efficient windows can help reduce heat transfer, improve interior comfort, and reduce the workload placed on HVAC systems.
For a deeper look at how energy-efficient storefronts and building openings can influence operating costs, read Energy-Efficient Storefronts: Reducing HVAC Costs in Commercial Buildings.
When evaluating a replacement project, look at the complete product specification rather than choosing a window solely because it qualifies for an incentive.
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