Rebates · 6 min read · Updated 2026-10

The 25C Insulation Tax Credit Ended After 2025: What Homeowners Need to Know (2026)

The federal 25C Energy Efficient Home Improvement Credit no longer applies to insulation placed in service after December 31, 2025. If you finished qualifying work in 2025 you can still claim it on your 2025 return. For 2026 projects, incentives come from state and utility programs, where available.

Enter your ZIP and we'll highlight HEEHRA rollout status plus state/utility rebates you can stack.

Prefer the generic version? Download the standard checklist.

Current status (2026): the credit has ended for new projects

Section 25C of the Internal Revenue Code — the Energy Efficient Home Improvement Credit — does not apply to qualifying property placed in service after December 31, 2025.

That means insulation and air sealing installed in 2026 or later does not qualify for the federal credit, regardless of when you signed the contract.

Always confirm current rules with the IRS or a tax professional; tax law can change, and this page is general information, not tax advice.

If your project was completed in 2025

Qualifying insulation and air-sealing placed in service in a U.S. primary residence during 2025 may still be claimed on your 2025 federal return using IRS Form 5695.

For 2025 projects the credit was 30% of qualifying MATERIAL cost (insulation labor did not qualify), within a $1,200 annual aggregate cap shared with windows, doors, and energy audits.

Keep the itemized invoice separating materials from labor, the manufacturer's certification statement, and records of any rebates (rebates reduce the cost basis for the credit).

If you already filed and missed the credit, ask a tax professional whether an amended return makes sense.

What incentives may still apply in 2026

State Home Energy Rebate programs (HOMES and HEEHRA, funded by the Inflation Reduction Act) are run by each state. Some are open, some are limited or paused, and terms differ — check your state energy office for current status.

Many electric and gas utilities run their own insulation or weatherization rebates. Amounts and eligibility vary by provider; check your utility's residential efficiency page before you sign a contract, since some require pre-approval.

Income-qualified households may be eligible for the federal Weatherization Assistance Program through local agencies.

We only list a program on our state pages when we have a documented source for it, and we cannot guarantee availability — always confirm directly with the program.

How to plan an insulation project without the federal credit

Get an itemized written quote showing material, R-value, and square footage so you can compare value and apply for any rebate.

Ask the contractor whether they participate in your utility's rebate program; participating contractors often handle the paperwork.

Prioritize high-return work first: attic air sealing and attic insulation usually deliver the biggest comfort and energy-bill improvement per dollar.

Frequently asked questions

HEEHRA & state rebate eligibility checklist

Walk through each step before you sign a contract. Print or save this page as a PDF for your records.

1. Check the federal 25C status for your project date

  • Federal 25C ended for insulation placed in service after December 31, 2025 — 2026 projects do not qualify
  • Completed qualifying work in 2025? Claim it on your 2025 return with IRS Form 5695Materials only for insulation; keep itemized invoices and manufacturer certification.

2. Check HEEHRA (state rebate) status for your state

  • Look up your state energy office HEEHRA page
  • Confirm program is OPEN (many states are still in pilot or waitlist)
  • Check income tier: ≤80% AMI = up to 100% cost covered; 80–150% AMI = up to 50%
  • Cap: up to $8,000 for heat pumps, $1,600 for insulation/air sealing
  • Save AMI proof (tax return, pay stubs) before applying

3. Layer in state & utility rebates

  • Check your electric/gas utility for insulation & heat pump rebates
  • Look up state weatherization or clean-energy programs
  • Confirm stacking rules with each program (HOMES and HEEHRA cannot be combined on the same measure)
  • Many utility rebates require pre-approval — apply BEFORE work starts

4. File & keep records

  • File IRS Form 5695 with your federal return
  • Store receipts, product PINs, and rebate approvals for 3+ years
  • Track annual caps if you'll do more work next year

Need a personalized version with your state's HEEHRA link and utility programs? Use the ZIP checklist download above.

Official sources & documentation

Primary references for the rules, caps, and example assumptions used in this guide.

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