Window Replacement Tax Credits and Rebates in 2026: What Is Still Available

The Federal Credit: What Happened

The Energy Efficient Home Improvement Credit (Section 25C of the Internal Revenue Code) was expanded by the Inflation Reduction Act (IRA) in 2022 and took effect January 1, 2023. It offered a 30% tax credit on the cost of ENERGY STAR Most Efficient certified windows, up to $600 per year. The credit applied to the product cost only, not labor or installation, and reset annually so homeowners could claim up to $600 each year.

The OBBBA, signed into law on July 4, 2025, accelerated the termination of several IRA energy provisions including Section 25C. The credit was originally scheduled to run through December 31, 2032, but the OBBBA ended it early. Windows placed in service after December 31, 2025 are not eligible for this federal credit.

Claiming the 2025 Credit

If you installed qualifying windows between January 1, 2025 and December 31, 2025, you can still claim the credit on your 2025 federal tax return (filed in 2026). To qualify, the windows must have been ENERGY STAR Most Efficient certified for the year of installation, and you need the manufacturer's certification statement confirming the product meets the efficiency requirements.

The credit is claimed on IRS Form 5695 (Residential Energy Credits). You need the manufacturer's certification statement (provided at purchase or downloadable from the manufacturer's website), receipts showing the purchase date and cost, and proof of installation date (contractor invoice or permit record).

The maximum credit for windows is $600 per year. This is a non-refundable tax credit, meaning it reduces your tax liability dollar for dollar but cannot generate a refund beyond your tax owed. If your tax liability is less than $600, you receive whatever your liability allows and cannot carry the remainder forward.

State and Local Programs Still Available

Several states operate their own energy efficiency incentive programs that are independent of the federal credit. These programs vary widely in availability, amount, and eligibility requirements. Check your state's energy office website or the DSIRE database (Database of State Incentives for Renewables and Efficiency) for current offerings in your area.

State Tax Credits

Some states offer their own tax credits for energy efficient home improvements including windows. These credits operate independently of the federal program and may still be active even though the federal credit has expired. Credit amounts range from $200 to $2,000 depending on the state and the scope of the project. States with historically active window efficiency credits include New York, Oregon, Maryland, and Montana, though programs change frequently.

Utility Rebates

Many electric and gas utilities offer rebates for energy efficient upgrades to reduce peak demand on the grid. Window rebates from utilities typically range from $25 to $100 per window for products that meet specific U-factor and SHGC thresholds. These rebates are usually applied for separately through the utility (not through your tax return) and are available to customers in the utility's service territory regardless of federal or state tax credit status.

Contact your electric and gas utility directly or check their website for current rebate programs. Some utilities offer enhanced rebates during certain seasons or in conjunction with other efficiency upgrades like insulation, air sealing, or HVAC replacement.

IRA Home Electrification Rebates (HOMES and HEAR)

The IRA also funded two rebate programs administered by states: the Home Owner Managing Energy Savings (HOMES) program and the High-Efficiency Electric Home Rebate Act (HEAR). These programs were in various stages of rollout when the OBBBA was signed. Windows may qualify as part of a whole-home efficiency upgrade under HOMES (which rewards total energy reduction) but are not a standalone eligible measure in most state implementations. Check your state energy office for the current status of these programs, as some states have fully launched them while others are still in development or have paused rollouts.

Manufacturer Promotions and Financing

With the federal credit gone, window manufacturers and dealers are increasing their own promotional offers to maintain sales momentum. Common offers in 2026 include:

Buy-more-save-more discounts. Manufacturers like Andersen, Pella, and Milgard offer tiered discounts where the per-window price drops as you add more windows to the order. Typical savings range from 5% for 5 windows to 15% for 15 or more windows. These promotions rotate seasonally.

Zero-percent financing. Many window companies offer 12 to 60 months of interest-free financing through partner lenders. This is not a rebate, but it effectively reduces the cost by eliminating interest charges on a large purchase. Read the terms carefully, most zero-percent offers require all payments on time or the deferred interest charges retroactively.

Off-season pricing. Window contractors are least busy from November through February in most markets. Scheduling installation during this period often yields 10% to 20% lower pricing compared to the spring and summer peak season, when demand and wait times both increase.

Alternative Ways to Offset Window Costs

Energy Savings

While not a rebate or credit, the ongoing energy savings from replacing old windows partially offset the project cost over time. Replacing single-pane windows with ENERGY STAR-rated double-pane low-E windows saves $125 to $465 per year in energy costs depending on your climate zone. Over 20 years, that is $2,500 to $9,300 in cumulative savings.

Insurance Premium Reductions

In hurricane and severe weather zones, upgrading to impact-rated windows can reduce your homeowners insurance premium by 10% to 45% on the windstorm portion of the policy. In Florida, for example, impact windows can save homeowners $800 to $2,500 per year in insurance costs. Over 5 to 10 years, the insurance savings alone can cover a significant portion of the window replacement cost.

Home Equity Financing

Home equity lines of credit (HELOCs) and home equity loans offer lower interest rates than personal loans or credit cards because they are secured by your home. Interest on home equity debt used for home improvements may also be tax-deductible if you itemize deductions, which effectively reduces the cost of financing. Current HELOC rates in 2026 range from 7% to 9%, compared to 12% to 24% for credit cards and 8% to 15% for unsecured personal loans.

Property Tax Abatements

Some municipalities offer property tax abatements or reductions for energy efficient home improvements. These programs are less common than utility rebates but can be valuable in cities that actively promote green building. Check with your local assessor's office or city sustainability department.

What to Do Now

If you are planning a window replacement project in 2026, the federal tax credit is no longer available as an offset. Focus on these strategies to minimize your net cost:

Check your state energy office and utility company for any active rebates or credits. These programs change frequently, so check even if you looked before. Get quotes during the off-season (November through February) when contractors are less busy and more willing to negotiate. Ask about manufacturer promotions and volume discounts. Choose windows that meet ENERGY STAR criteria anyway, because the energy savings deliver a real financial return regardless of tax credits. And if you are in a high-wind zone, factor in the insurance premium reduction when calculating your total return on investment.