Federal Tax Credit
Maximum $600 total • Valid through December 31, 2026
Qualification Requirements:
- Windows must be Energy Star certified
- Must be installed in your primary residence
- Installation must be completed by December 31, 2026
- Original use in the home (not for new construction)
- Must meet or exceed Energy Star requirements for your climate zone
Example Calculation:
- Window replacement cost: $8,000
- Federal tax credit (30%): $600
- Net cost after credit: $7,400
Note: Credit is limited to $600 total regardless of project cost
State and Utility Rebates
Many states and utility companies offer additional rebates for energy-efficient window installations. These vary significantly by location but can provide substantial additional savings.
High-Rebate States
California
Up to $200/window through utility programs
New York
NYSERDA rebates up to $150/window
Massachusetts
MassSave up to $100/window
Connecticut
Energize CT up to $125/window
Utility Programs
Energy Star Partners
$25-75 rebates nationwide
Local Electric Utilities
Varies widely, $50-200/window
Gas Companies
Focus on heating efficiency
How to Claim Your Credits
Federal Tax Credit Process
- Purchase Energy Star certified windows
- Keep all receipts and manufacturer certification
- Complete IRS Form 5695 with your tax return
- Credit reduces your tax liability dollar-for-dollar
- Unused credits can be carried forward to next year
State/Utility Rebate Process
- Check your utility company's website for current programs
- Submit application before or after installation (varies by program)
- Provide proof of purchase and installation
- Rebate typically issued as check or bill credit
- Processing time: 6-12 weeks typical
Required Documentation
Keep These Records:
- Purchase receipts
- Manufacturer certification sheets
- Energy Star labels/certificates
- Installation invoices
- Before/after photos
- Product specifications
- Contractor license information
- Permit documentation
Maximizing Your Savings
Timing Strategy
Plan your installation to take advantage of all available incentives. Some utility programs have limited funds and operate on a first-come, first-served basis.
Bundle with Other Improvements
Consider combining window replacement with other energy efficiency upgrades like insulation or HVAC improvements to maximize available credits.
Total Potential Savings Example:
- Window project cost: $10,000
- Federal tax credit: -$600
- State rebate: -$1,500
- Utility rebate: -$900
- Net cost: $7,000 (30% savings!)