Massachusetts Heat Pump Tax Credit 2025
How the federal 25C heat pump tax credit may apply to Massachusetts homeowners, how it differs from Mass Save rebates, and what to verify before assuming you qualify.
Is there a Massachusetts heat pump tax credit in 2025?
The federal 25C Energy Efficient Home Improvement Credit expired December 31, 2025 under current IRS rules. It is not available for new heat pump installations in 2026. If you installed a qualifying heat pump in 2025, you may still be able to claim it on your 2025 federal tax return — see the IRS page for Form 5695 requirements. Mass Save rebates are a separate program and remain available regardless of the federal credit status.
Not tax advice. Always verify with a qualified tax professional.
Mass Save rebate vs federal 25C tax credit — key differences
| Factor | Mass Save rebate | Federal 25C credit |
|---|---|---|
| Who administers it | Your electric utility (via Mass Save) | IRS / federal government |
| What it is | A rebate reducing installation cost | A credit reducing federal income tax owed |
| When you receive it | At installation or mail-in after | When you file federal taxes |
| Maximum amount (heat pumps) | Up to $10,000+ (whole-home, oil/propane) | 30% of cost, capped at $2,000/year |
| Non-refundable? | N/A — reduces your cost directly | Yes — cannot exceed your tax liability |
| Affected by income? | Enhanced tiers for low-income households | Depends on your tax liability |
| Equipment requirements | AHRI-certified, utility-approved model | ENERGY STAR or IRS-specified efficiency ratings |
| Stackable? | Stackable with 25C | Stackable with Mass Save (basis may adjust) |
What did the federal heat pump tax credit cover (for 2025 filers)?
For qualifying heat pumps placed in service before December 31, 2025, the IRS 25C Energy Efficient Home Improvement Credit allowed eligible homeowners to claim 30% of the installed cost, up to a $2,000 annual cap. The credit is non-refundable — it reduces what you owe in federal income taxes but does not generate a refund beyond your tax liability.
For 2025 installations, the 25C credit also applied to insulation and air sealing improvements (capped at $1,200/year). Both credits could be claimed in the same tax year, for a potential combined maximum of $3,200. Beginning in 2025, the IRS required a Qualified Manufacturer Identification Number (QMID) for the equipment — confirm your installer provided this.
The 25C credit has expired under current law for equipment placed in service after December 31, 2025. Congress could reinstate or extend it — check IRS.gov for the latest status.
Why contractor quotes can be misleading when they mix rebates and tax credits
Some quotes show a single “net cost after incentives” figure that combines the Mass Save rebate, the federal 25C credit, and sometimes even financing savings. This is misleading because:
What to ask before assuming the tax credit applies
How does the tax credit affect after-rebate cost planning?
When estimating your true cost, treat the Mass Save rebate and the 25C credit separately. The rebate reduces what you pay at or shortly after installation. The tax credit reduces what you owe at tax time — in a different calendar period and only up to your tax liability.
A reasonable planning approach: calculate your payback period and ROI using the Mass Save rebate as certain, then treat the 25C credit as potential additional benefit that you will verify with your tax professional. Do not build your financing plan around receiving the full credit if you are not certain of your tax liability.
IRS 25C Energy Efficient Home Improvement Credit
The official IRS page covers credit amounts, eligible equipment categories, annual limits, and how to claim on your federal return. Review this before assuming your installation qualifies.
IRS 25C official page ↗Is the federal 25C heat pump tax credit still available in 2026?
No. According to the IRS, the 25C Energy Efficient Home Improvement Credit applies to qualifying property placed in service on or after January 1, 2023, and before December 31, 2025. Equipment installed in 2026 or later does not qualify under current law. If Congress extends or reinstates the credit, the IRS will update its guidance. Always verify current status at IRS.gov before assuming eligibility.
Can I still claim the 25C credit if I installed a heat pump in 2025?
If your heat pump was placed in service (commissioned and operational) before December 31, 2025, you may be eligible to claim the 25C credit on your 2025 federal tax return. The credit is non-refundable and capped at $2,000 for heat pumps. Beginning in 2025, the IRS also requires a Qualified Manufacturer Identification Number (QMID) for the equipment. Consult a tax professional to confirm eligibility for your specific installation.
Is there a Massachusetts-specific heat pump tax credit?
There is no separate Massachusetts state income tax credit specifically for heat pumps as of May 2026. Mass Save rebates are a separate program — they are utility rebates, not tax credits, and they remain available regardless of federal tax credit status. Verify current state program status with a qualified tax professional.
Can I claim the federal 25C credit and the Mass Save rebate on the same 2025 installation?
For qualifying installations placed in service in 2025: generally yes, but with an important caveat. If the Mass Save rebate reduces your out-of-pocket project cost, the basis you use to calculate the 25C credit may need to be adjusted accordingly. Consult a tax professional to determine how rebates affect the credit calculation for your specific situation.
Is the 25C credit refundable?
No. The federal 25C credit is non-refundable — it reduces the amount of federal income tax you owe, but it does not generate a refund beyond your total tax liability. If the credit exceeds your tax liability in a given year, you generally cannot carry the unused portion forward to future tax years. Verify with a tax professional.
Not a government website. Not affiliated with Mass Save, any Massachusetts utility, the IRS, or any state agency. Rebate program rules, tiers, and amounts change without notice — always verify current eligibility with your utility or the Mass Save website before treating any estimate as confirmed.