Home Improvement Tax Credits in 2026: What Qualifies and How to Claim Them
· Tips · 5 min read
Two federal tax credits cover 30% of qualifying home improvement costs in 2026 with no income limits for most households. The Energy Efficient Home Improvement Credit (IRS Form 5695, Section 25C) caps at $3,200 per year for upgrades like heat pumps, windows, doors, and insulation. The Residential Clean Energy Credit (Section 25D) covers solar, battery storage, and geothermal with no annual dollar cap. Both credits were extended through 2032 under the Inflation Reduction Act and represent the most significant federal benefit available to homeowners making energy-related upgrades.
Energy Efficient Home Improvement Credit (25C)
The 25C credit covers 30% of qualified expenses for improvements to your primary or secondary residence. It has category-specific annual limits:
| Improvement Type | Annual Credit Cap | Key Qualification Requirement |
|---|---|---|
| Heat pumps (air source) | $2,000 | ENERGY STAR Most Efficient designation |
| Heat pump water heaters | $2,000 (combined with HVAC) | Uniform Energy Factor 2.2 or higher |
| Windows and skylights | $600 | ENERGY STAR certified (U-factor 0.30 or lower in most climate zones) |
| Exterior doors | $500 ($250 per door) | ENERGY STAR certified |
| Insulation and air sealing | $1,200 (combined limit) | Meets IECC standards for the project's climate zone |
| Electrical panel upgrade | $600 | Must be rated 200 amps or more; required to install qualified electric equipment |
| Home energy audit | $150 | Conducted by a certified auditor |
The $3,200 annual maximum is a hard cap across all 25C categories combined. The $2,000 cap on heat pumps and heat pump water heaters is a specific sub-limit within that total — not in addition to it. Plan your project sequence across tax years to maximize the credit: if you install a heat pump this year and windows next year, you can claim up to $3,200 each year rather than being limited to a single annual cap.
What the heat pump credit covers in practice
An air-source heat pump system typically costs $4,000 to $12,000 installed depending on home size and existing ductwork. At 30%, a $6,000 installation generates a $1,800 credit — close to the $2,000 cap. Larger systems that cost $7,000+ will hit the cap. The credit applies to the full installed cost including labor. For a full breakdown of HVAC options and installed costs, see our HVAC replacement cost guide.
Residential Clean Energy Credit (25D)
The 25D credit is more generous: 30% of the full installed cost with no annual dollar cap. It applies to:
- Solar photovoltaic systems: A 10-kW system averaging $25,000 to $35,000 installed generates a $7,500 to $10,500 credit
- Battery storage systems: $12,000 to $20,000 for whole-home systems; credit applies to the full cost when paired with solar (and to standalone battery storage starting in 2023)
- Geothermal heat pumps: $15,000 to $40,000 installed; the credit makes geothermal cost-competitive with gas systems over a 10-year horizon
- Solar water heating: $3,000 to $8,000 installed
- Fuel cells: $1,500 per 0.5 kW capacity
Unlike the 25C credit, the 25D credit has no annual cap. If your solar installation generates a $20,000 credit and you only owe $8,000 in federal taxes, the remaining $12,000 carries forward to subsequent tax years. This carryforward provision is valuable for homeowners in lower tax brackets or those with large installations.
State-Level Rebates and IRA HOMES Act Funding
Federal credits layer on top of state incentives that are often more immediate (direct rebates vs. tax credits you file next April):
IRA HOMES Act rebates
The Inflation Reduction Act allocated $4.3 billion for state-administered home efficiency rebates. These are separate from federal tax credits and reduce your upfront cost directly. Maximum rebates by equipment type:
- Heat pumps: up to $8,000
- Heat pump water heaters: up to $1,750
- Insulation: up to $1,600
- Electric panel upgrade: up to $4,000
Income limits apply: rebates are larger for households at 80 to 150% of area median income. Households above 150% AMI are generally ineligible for HOMES Act rebates but remain fully eligible for federal tax credits. Not all states have implemented HOMES Act rebates yet — check your state energy office.
Utility rebates
Most major utilities offer additional rebates for ENERGY STAR appliances, smart thermostats, and insulation upgrades — typically $50 to $500 per qualifying item. These do not affect your federal or state tax credit eligibility. Combining utility rebate, state rebate, and federal credit on a single project is entirely permissible.
What Does NOT Qualify
Several common renovation projects are not covered by 25C or 25D, and homeowners often mistakenly expect credits that do not exist:
- Standard (non-heat pump) furnaces or central air conditioners
- Kitchen or bathroom remodeling (no energy efficiency component)
- Roof replacement with standard shingles (solar roofing tiles qualify; asphalt shingles do not)
- Smart home devices (smart thermostats, connected appliances) — not covered under the current credit structure
- Swimming pools, spas, or outdoor lighting
- Improvements to rental property (25C/25D credits apply to residences where you live)
How to Maximize the Credits
- Get a home energy audit first ($150, 30% credited). An energy audit identifies your highest-impact opportunities and its $150 cost is 30% credited. Audit findings help you prioritize heat pumps vs. insulation vs. windows.
- Sequence projects across tax years. The 25C credit resets annually. Spreading a $15,000 project across two tax years — HVAC year 1, windows and insulation year 2 — can generate $3,200 x 2 = $6,400 in total credits rather than a single-year $3,200 cap.
- Verify product qualification before purchase. Ask your contractor to confirm the specific model number meets the credit requirements. Not all heat pumps qualify — it must have ENERGY STAR Most Efficient designation. Get the manufacturer's product certification statement in writing.
- Keep complete documentation. Save receipts, invoices, and manufacturer certification statements for at least 3 years after filing. IRS audits of energy credits are uncommon but do occur.
- Explore green financing options. Some lenders offer energy-efficient home improvement loans at below-market rates for qualifying projects. Our guide on home renovation financing covers PACE loans, energy-efficient mortgages, and utility on-bill financing alongside traditional HELOC and personal loan options.
Credits for Windows and Insulation
Windows and insulation carry the lowest per-project caps ($600 and $1,200 respectively) but are often the most cost-effective upgrades in terms of energy savings per dollar. A $4,000 window replacement project generates a $600 credit — 15% back, not 30%, because the cap is binding at a relatively low threshold. For a full breakdown of window replacement options and energy savings by window type, see our window replacement cost guide. For insulation decisions that affect both energy costs and credit eligibility, our energy-efficient home upgrades guide covers R-value targets by climate zone.
Browse our directory to find remodeling contractors by city who are familiar with credit-qualifying installations, or search for home remodelers near you with energy upgrade experience.
Frequently Asked Questions
- What home improvements qualify for a federal tax credit in 2026?
- The Energy Efficient Home Improvement Credit (25C) covers 30% of costs for qualifying upgrades including heat pumps, heat pump water heaters, exterior doors, windows, insulation, and electrical panel upgrades. The annual cap is $3,200 (with sub-limits by category). The Residential Clean Energy Credit (25D) covers 30% of costs for solar panels, solar water heating, battery storage, and geothermal heat pumps — with no annual dollar cap.
- How do I claim the energy efficiency tax credit on my taxes?
- File IRS Form 5695 with your federal tax return. You need product documentation showing the item meets the relevant efficiency standard (such as ENERGY STAR certification or specific SEER2/EER2 ratings). Keep receipts, installation invoices, and manufacturer certification statements. The credit is non-refundable — it reduces your tax liability dollar-for-dollar but does not generate a refund if it exceeds what you owe.
- Can I claim the tax credit if I paid a contractor to install the improvements?
- Yes — the 25C and 25D credits apply to both materials and installation costs. You do not need to do the work yourself. The credit is based on total project cost including labor, provided the installed equipment meets the required efficiency specifications.
- Do state tax credits stack with the federal credit?
- Yes. Many states offer separate rebate programs and tax credits for energy-efficient upgrades that are independent of the federal credit. The IRA's HOMES Act also funds state-administered rebates (up to $8,000 for heat pumps, $1,750 for heat pump water heaters) for lower-income households. Stack every available incentive — federal credit, state credit, utility rebate — to maximize your return on investment.
- Is there a limit on how many years I can claim the 25C credit?
- The 25C Energy Efficient Home Improvement Credit has a $3,200 annual cap but resets each tax year. You can claim it every year you make qualifying improvements through 2032, when the credit is currently set to expire. Spreading improvements across multiple tax years can multiply your total benefit beyond the $3,200 single-year cap.