Home Energy Rebate Toolkit
Everything you need to maximise your energy upgrade savings: which incentives stack in 2026, a complete claiming checklist, and a historical reference for the federal credits that ended on 31 December 2025.
- Federal credits: historical reference (ended 2025)
- Rebate Stacking Rules & Order
- Complete Claiming Checklist
- Document Tracker
What's Inside
Federal Credit Reference (through 2025)
What the IRA credits paid before they were repealed
Stacking Rules
What combines, what doesn't, and claiming order
Claiming Checklist
Step-by-step from quote to tax filing
Federal Tax Credits: What Applied Through 2025
These credits were repealed effective December 31, 2025 and cannot be claimed for work done in 2026. The table below is kept for anyone still filing a 2025 return. Here's your quick reference guide.
| Upgrade Type | Credit | Annual Max (through 2025) | IRS Form |
|---|---|---|---|
| Heat Pumps (HVAC) | 30% | $2,000/year | 25C |
| Heat Pump Water Heaters | 30% | $2,000/year | 25C |
| Insulation & Air Sealing | 30% | $1,200/year | 25C |
| Windows & Skylights | 30% | $600/year | 25C |
| Exterior Doors | 30% | $500/year | 25C |
| Electric Panel Upgrade | 30% | $600/year | 25C |
| Home Energy Audit | 30% | $150/year | 25C |
| Solar Panels | 30% | No limit | 25D |
| Battery Storage (3+ kWh) | 30% | No limit | 25D |
| Geothermal Heat Pump | 30% | No limit | 25D |
| EV Charger | Ended 30 Jun 2026 | n/a | 30C |
25C: Energy Efficient Home Improvement Credit
- • Was 30%; repealed effective Dec 31, 2025
- • Annual limit was $3,200 ($1,200 general + $2,000 heat pumps)
- • Reset each tax year, so it could be claimed annually
- • Existing homes only, and only your primary residence
25D: Residential Clean Energy Credit
- • Was 30%; repealed effective Dec 31, 2025
- • Had no annual maximum
- • New or existing homes qualified
- • Primary or secondary residence
- • Unused credit from a 2025 install still carries forward
Rebate Stacking Rules
Understanding what stacks and what doesn't can save you thousands. Here's the definitive guide.
| Combination | Allowed? | Notes |
|---|---|---|
| State + Utility Rebates | Almost always stackable — this is the most common combination | |
| Multiple Mass Save Rebates | Different project types (heat pump + insulation + thermostat) in the same year | |
| Federal + State + Utility | No longer possible: 25C and 25D were repealed effective 31 December 2025 | |
| Federal Credit on Rebated Amount | Applied through 2025: the credit was calculated AFTER subtracting rebates | |
| Same Project, Multiple Utilities | Only one utility rebate per project (use your electric/gas provider) | |
| Carryover Unused Credits | 25C never carried forward; unused 25D from a 2025 install still carries over | |
| Previous Year Equipment | Must claim in the tax year installation was completed |
Correct Order for Claiming
There is no federal credit to calculate for work done in 2026 — 25C and 25D were repealed effective 31 December 2025. Through 2025 you calculated it on the remaining cost after rebates.
Complete Claiming Checklist
Follow this checklist to ensure you capture every dollar of savings and have proper documentation.
1 Before You Start
- Verify your utility provider and available rebates
- Check income-qualified program eligibility (often 2-3x higher rebates)
- Schedule home energy assessment if offered free
- Get multiple contractor quotes
- Confirm equipment meets efficiency requirements (ENERGY STAR, CEE tier, etc.)
- Check rebate program funding status (some run out)
2 During Installation
- Use program-approved contractor if required
- Keep all itemized invoices (equipment + labor separate)
- Save manufacturer certification statements
- Take before and after photos
- Get AHRI certificate for HVAC equipment
- Confirm permit pulled if required
3 Claiming Rebates
- Submit utility rebate within deadline (usually 90 days)
- Apply for state rebates if available
- Keep copies of all rebate applications
- Save rebate confirmation/check stubs
- Claim the MA Schedule EC credit if you installed solar or geothermal
- File IRS Form 5695 only if the work was completed on or before 31 Dec 2025
4 Documents to Keep (7 years)
- Itemized receipts and invoices
- Contractor contracts
- Manufacturer certifications
- ENERGY STAR labels or certificates
- Rebate approval letters and payments
- Photos of installation
- Copy of filed Form 5695 (2025 installations) or Schedule EC
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What's in the Toolkit:
- Federal Tax Credits (historical, through 2025)
- Rebate Stacking Rules
- Claiming Checklist
- Document Tracker
Frequently Asked Questions
What federal tax credits are available for home energy upgrades?
None, for work done in 2026. The One Big Beautiful Bill Act (P.L. 119-21) repealed both residential energy credits: the Energy Efficient Home Improvement Credit (25C) and the Residential Clean Energy Credit (25D) apply only to property placed in service on or before 31 December 2025. The alternative fuel vehicle refuelling credit (30C) and the 45L new-home credit ran until 30 June 2026. Rebates from Mass Save and your utility are unaffected.
Can I combine federal tax credits with state and utility rebates?
Through 2025 you could, and the order mattered: utility rebates first, then state incentives, then the federal credit calculated on what was left. For 2026 work there is no federal credit to add. Utility and state incentives still stack with each other, and Massachusetts still offers its own Schedule EC credit for renewable energy property (15% of net expenditure, up to $1,000).
What documents do I need to claim energy rebates?
Keep your itemized receipts showing equipment and labor costs, manufacturer certification statements, ENERGY STAR or AHRI certificates for equipment, contractor invoices, and before/after photos. If you are filing for a 2025 installation, you will also need IRS Form 5695.
How long do I have to claim rebates after installation?
Utility rebates typically must be claimed within 90 days of installation. State rebate deadlines vary — check your specific program. Federal credits followed the tax year the installation was completed, so a 2025 installation is claimed on your 2025 return; there is no federal credit for 2026 installations.
Do renters qualify for energy rebates?
Some utility rebates, like smart thermostats, are available to renters, and Mass Save offers no-cost weatherisation to income-eligible renters with landlord consent. Larger projects typically require homeownership. Renters could claim the federal 25C credit for improvements they paid for through 2025, but that credit no longer exists.
What is the difference between a tax credit and a rebate?
A rebate is money back, often upfront or shortly after purchase, and Mass Save rebates are unaffected by the federal repeal. A tax credit reduces your tax bill when you file, so you need tax liability to benefit. With 25C and 25D gone, the only credit left for Massachusetts homeowners is the state Schedule EC credit for renewable energy property.