The energy efficient tax credit gives homeowners a dollar-for-dollar reduction on their federal income tax bill when they make qualifying energy upgrades to their home. Two credits exist under the Internal Revenue Code — the Energy Efficient Home Improvement Credit under Section 25C and the Residential Clean Energy Credit under Section 25D. Both credits cover 30% of qualifying costs, but each has its own rules, dollar caps, and eligible upgrades.
Under the One Big Beautiful Bill Act signed into law in 2025, both credits expire for any expenditures made after December 31, 2025. That deadline creates urgency for every homeowner who has been putting off energy upgrades. The IRS reported that millions of taxpayers claimed residential energy credits in recent years, with the average Section 25D credit exceeding $5,000 per return for solar installations alone.
Here is what you will learn:
- 🏠 The exact dollar limits and qualifying upgrades under both Section 25C and Section 25D — so you know the maximum credit you can claim this year
- 💡 Three real-world scenarios with tables showing how much homeowners save on heat pumps, windows, and solar panels
- ⚠️ The critical QMID requirement for 2025 that disqualifies your entire credit if you miss it
- 📋 A step-by-step walkthrough of IRS Form 5695 so you can file with confidence
- 🗓️ Why the One Big Beautiful Bill Act makes 2025 the last year to claim these credits — and what that means for your wallet
Two Credits, Two Code Sections, One Goal
Federal law provides two separate energy tax credits for homeowners. Section 25C — the Energy Efficient Home Improvement Credit — covers upgrades like insulation, windows, doors, central air conditioners, furnaces, and heat pumps. Section 25D — the Residential Clean Energy Credit — covers renewable energy systems like solar panels, wind turbines, geothermal heat pumps, fuel cells, and battery storage.
Both credits equal 30% of qualifying costs. The key difference is that Section 25C has strict annual dollar caps while Section 25D has no annual or lifetime dollar limit (except for fuel cells). Section 25C is nonrefundable with no carryforward — if you cannot use the full credit this year, you lose the rest. Section 25D is also nonrefundable, but it does allow you to carry forward unused credit to future tax years.
Who Can Claim the Energy Efficient Tax Credit?
You must own and live in the home to qualify for either credit. The IRS requires that Section 25C improvements be made to your main home — the place where you live most of the time. It must be an existing home located in the United States that you improve or add onto, not a new construction.
Landlords and property owners who do not live in the home cannot claim Section 25C. Section 25D is slightly broader — it applies to your main home and a second home you live in part-time, as long as you do not rent it to others. You cannot claim the fuel cell credit for a second home.
When You Use Your Home for Business
If you use part of your home for business, the credit amount changes. The IRS draws the line at 20% business use. If business use is at or below 20%, you receive the full credit. If business use exceeds 20%, you only get credit for the share tied to personal use.
A home office that takes up 15% of your home’s square footage still qualifies you for the full credit. A home office that takes up 25% means you must reduce your qualifying expenses by that 25% business-use portion.
Section 25C: What Qualifies and How Much You Get
The Energy Efficient Home Improvement Credit covers a wide range of home upgrades. Every qualifying product must be brand new — used equipment does not count. The credit equals 30% of the cost, but annual caps limit how much you can claim.
Annual Credit Caps for Section 25C
| Upgrade Type | Maximum Credit |
|---|---|
| Exterior doors | $250 per door, $500 total |
| Exterior windows and skylights | $600 total |
| Insulation and air sealing | Up to $1,200 (within overall cap) |
| Central air conditioners | $600 per item |
| Gas/propane/oil water heaters | $600 per item |
| Gas/propane/oil furnaces or boilers | $600 per item |
| Electrical panel upgrades (200+ amps) | $600 per item |
| Home energy audits | $150 |
| Heat pumps and heat pump water heaters | $2,000 |
| Biomass stoves and boilers | $2,000 |
The overall annual cap is $1,200 for most items and $2,000 for heat pumps, heat pump water heaters, biomass stoves, and biomass boilers. These two caps are separate, which means you can claim up to $3,200 total in a single tax year if you combine qualifying upgrades from both categories.
Building Envelope Components
Building envelope upgrades include exterior doors, windows, skylights, and insulation. Each component must have an expected lifespan of at least 5 years. Exterior doors must meet Energy Star requirements, while windows and skylights must meet Energy Star Most Efficient certification.
Insulation and air sealing materials must meet the International Energy Conservation Code (IECC) standard in effect two years before the installation year. For materials installed in 2025, the applicable standard is the IECC in effect on January 1, 2023. Labor costs do not qualify for building envelope components — only the material costs count.
Residential Energy Property
Central air conditioners, water heaters, furnaces, and boilers qualify when they meet or exceed the Consortium for Energy Efficiency (CEE) highest efficiency tier in effect at the start of the installation year. Unlike building envelope components, labor costs for installation do count toward residential energy property.
Electrical panel upgrades also qualify if the panelboards, sub-panelboards, branch circuits, or feeders meet the National Electric Code and have a capacity of 200 amps or more. This upgrade is called enabling property because it enables the installation of other qualifying energy equipment. Both the enabling property and the enabled property must be installed in the same year — unless they span consecutive tax years, in which case you may treat both as installed in the later year.
Heat Pumps and Biomass Systems
Heat pumps, heat pump water heaters, biomass stoves, and biomass boilers fall under a separate $2,000 annual cap. Heat pumps must meet or exceed the CEE highest efficiency tier. Biomass stoves and boilers must have a thermal efficiency rating of at least 75%. Labor costs for installation are included in qualifying expenses.
Section 25D: Clean Energy Without a Dollar Cap
The Residential Clean Energy Credit equals 30% of the cost of qualifying clean energy property. There is no annual or lifetime dollar limit (except for fuel cells). You can claim this credit every year you install eligible property through December 31, 2025.
What Qualifies Under Section 25D
| Clean Energy Property | Key Requirement |
|---|---|
| Solar electric panels | Must generate electricity for home use |
| Solar water heaters | Must be certified by Solar Rating Certification Corporation |
| Wind turbines | Must generate electricity for home use |
| Geothermal heat pumps | Must meet Energy Star requirements at time of purchase |
| Battery storage | Must have capacity of at least 3 kilowatt hours |
| Fuel cells | Must have nameplate capacity of at least 0.5 kW; credit limited to $500 per half kW |
Qualifying expenses include labor costs for onsite preparation, assembly, original installation, and piping or wiring to connect the system to your home. Traditional roofing components like trusses and standard shingles do not qualify — but solar roofing tiles and solar shingles do because they generate clean energy.
The Carryforward Advantage
One of the biggest benefits of Section 25D is the credit carryforward. If your credit exceeds your tax liability for the year, you carry the unused portion to the next tax year. This is a major difference from Section 25C, which offers no carryforward — any unused credit disappears.
A homeowner who installs a $30,000 solar panel system receives a $9,000 credit. If that homeowner only owes $6,000 in federal taxes this year, they carry the remaining $3,000 forward to offset next year’s taxes.
Section 25C vs. Section 25D: Side-by-Side Breakdown
| Feature | Section 25C |
|---|---|
| Credit rate | 30% |
| Annual cap | $1,200 + $2,000 = $3,200 max |
| Carryforward | No |
| Main home required | Yes |
| Second home eligible | No |
| Labor costs | Only for residential energy property (not building envelope) |
| New construction | No — existing homes only |
| QMID required (2025) | Yes |
| Feature | Section 25D |
|---|---|
| Credit rate | 30% |
| Annual cap | No cap (except fuel cells) |
| Carryforward | Yes |
| Main home required | Yes (but second home eligible for most items) |
| Second home eligible | Yes (except fuel cells) |
| Labor costs | Yes — including installation and wiring |
| New construction | Yes |
| QMID required (2025) | No |
The 2025 QMID Rule That Catches Homeowners Off Guard
Starting January 1, 2025, every item of qualifying property under Section 25C must carry a Qualified Manufacturer Identification Number (QMID). The IRS requires you to report this four-character alphanumeric code on your tax return for each qualifying item.
If you fail to include the QMID, the IRS disqualifies the credit for that item — even if the product meets every energy efficiency standard. The only exception is insulation and air sealing materials, which do not require a QMID.
Your contractor or the product manufacturer should provide the QMID. Ask for it before installation — not after. Write it down, save the receipt, and keep the manufacturer’s certification letter in your records.
Three Scenarios That Show How the Credit Works
Scenario 1: Maria Upgrades Her Windows and Doors
Maria owns a home in New Jersey and replaces 6 exterior windows and 2 exterior doors in 2025. She spends $8,000 on windows and $3,000 on doors. All products meet Energy Star Most Efficient certification.
| Upgrade | Credit Calculation |
|---|---|
| Windows: $8,000 × 30% = $2,400 | Capped at $600 |
| Door 1: $1,500 × 30% = $450 | Capped at $250 |
| Door 2: $1,500 × 30% = $450 | Capped at $250 |
| Total credit | $1,100 |
Maria’s credit is $1,100. Even though 30% of her total costs equals $3,300, the per-item and category caps bring her credit down. Maria owes $4,500 in federal taxes, so she uses the full $1,100. Her final tax bill drops to $3,400.
Scenario 2: David Installs a Heat Pump System
David lives in Ohio and installs a qualifying electric heat pump for $12,000, including labor, in 2025. The heat pump meets the CEE highest efficiency tier.
| Upgrade | Credit Calculation |
|---|---|
| Heat pump: $12,000 × 30% = $3,600 | Capped at $2,000 |
| Total credit | $2,000 |
David claims the full $2,000 heat pump credit. He also replaces his electrical panel for $4,000 to support the new heat pump. The panel upgrade qualifies as enabling property for a separate credit of $4,000 × 30% = $1,200, capped at $600. David’s combined credit for the year is $2,600.
David owes $3,200 in federal taxes. After the credit, his bill drops to $600. The credit is nonrefundable with no carryforward, so David cannot get a refund for any unused amount.
Scenario 3: Lisa Installs Solar Panels and Battery Storage
Lisa lives in California and installs a $25,000 solar panel system with a $10,000 battery storage unit (5 kWh capacity) in 2025.
| Upgrade | Credit Calculation |
|---|---|
| Solar panels: $25,000 × 30% | $7,500 |
| Battery storage: $10,000 × 30% | $3,000 |
| Total credit | $10,500 |
Lisa’s credit is $10,500 with no cap. She owes $7,000 in federal taxes this year. She uses $7,000 of the credit and carries the remaining $3,500 forward to her 2026 tax return. This carryforward ability is exclusive to Section 25D.
How Rebates and Subsidies Change Your Credit
Not every rebate or subsidy reduces your qualifying expenses. The IRS draws clear lines between three types of financial incentives, and each one has different rules.
Public utility subsidies for buying or installing clean energy property must be subtracted from your qualifying expenses. This applies whether the subsidy goes directly to you or to your contractor. Net metering credits — payments your utility makes for energy you sell back to the grid — do not reduce your qualified expenses.
Manufacturer or seller rebates must be subtracted from qualifying expenses if all three conditions are met: the rebate is based on the cost of the property, it comes from someone connected to the sale (manufacturer, distributor, seller, or installer), and it is not payment for services you provide.
State energy efficiency incentives are generally not subtracted from your qualifying costs. Many states label their incentives as “rebates,” but they do not meet the federal definition. These state incentives may, however, count as taxable gross income on your federal return. IRS Announcement 2024-19 provides specific guidance on payments from the Department of Energy’s Home Energy Rebates Program.
How a Utility Subsidy Affects Your Credit
| Scenario | Credit Impact |
|---|---|
| You spend $10,000 on a heat pump; your utility gives you a $2,000 subsidy | Credit based on $8,000 ($10,000 − $2,000) |
| You install solar panels; your utility pays you for net metering | No reduction — credit based on full cost |
| Your state gives you a $1,500 “rebate” for insulation | Usually no reduction — but may be taxable income |
| The manufacturer mails you a $500 rebate check after purchase | Credit based on reduced cost ($500 less) |
The One Big Beautiful Bill: Why 2025 Is the Last Year
The One Big Beautiful Bill Act (OBBBA) made sweeping changes to federal energy tax credits. The most important change for homeowners: both Section 25C and Section 25D expire after December 31, 2025. Any expenditures made after that date are ineligible for credits.
This is not a phase-down — it is a hard cutoff. The previous law under the Inflation Reduction Act had extended both credits through 2032 with a gradual phase-down starting in 2033. The OBBBA accelerated that timeline by seven years.
What Expires and When
| Credit | Expiration Date |
|---|---|
| Energy Efficient Home Improvement Credit (25C) | December 31, 2025 |
| Residential Clean Energy Credit (25D) | December 31, 2025 |
| Clean Vehicle Credit (30D) | September 30, 2025 |
| Alternative Fuel Refueling Credit (30C) | June 30, 2026 |
| New Energy Efficient Home Credit (45L) | Construction must begin before June 30, 2026 |
The IRS clarified that the credit applies when property is installed, not merely purchased. If you buy a heat pump in November 2025 but it is not installed until January 2026, you cannot claim the credit. Installation must be complete by December 31, 2025.
State-Level Energy Incentives Worth Knowing
Federal credits are just one layer. Many states offer their own energy efficiency incentives that stack on top of the federal credits. These state incentives do not reduce your federal credit in most cases.
New York offers the NY-Sun program with incentives for solar installations and a state tax credit of up to 25% of qualifying solar energy system costs, capped at $5,000. New York also provides a real property tax exemption for solar and wind energy systems for 15 years.
New Jersey does not have a state income tax credit for energy improvements, but it offers Sales Tax Exemption on solar panels and energy-efficient equipment. The state’s Clean Energy Program provides rebates for HVAC systems, water heaters, and insulation through participating utilities.
California offers multiple incentive programs including the Self-Generation Incentive Program (SGIP) for battery storage and the Energy Savings Assistance Program for income-qualifying households. California’s solar mandate requires new residential construction to include solar panels, but existing homeowners can stack state incentives with the federal Section 25D credit.
Texas has no state income tax, so there is no state-level tax credit. Texas homeowners rely on local utility rebates and property tax exemptions for renewable energy systems.
Filing Form 5695: Every Line Explained
You claim both credits on IRS Form 5695, Residential Energy Credits. Part I covers the Residential Clean Energy Credit (Section 25D). Part II covers the Energy Efficient Home Improvement Credit (Section 25C). You must file this form with your annual tax return.
Part I: Residential Clean Energy Credit (Section 25D)
Lines 1–4 and 5b are where you enter the costs of each type of clean energy property. Enter the full address of the home where you installed the property in the section above Line 1. Include labor costs for onsite preparation, assembly, installation, and wiring.
- Line 1: Solar electric property costs
- Line 2: Solar water heating property costs
- Line 3: Small wind energy property costs
- Line 4: Geothermal heat pump property costs
- Line 5a–5b: Battery storage (must be at least 3 kWh — check “Yes” on 5a, then enter costs on 5b)
- Line 7a–7c: Fuel cell property (must be installed at your main home — check “Yes” on 7a)
- Line 8: Fuel cell property costs
- Line 10: Fuel cell kilowatt capacity × $1,000
Line 14 is the credit limitation. You must complete a worksheet to figure your tax liability minus other credits you are claiming. The residential clean energy credit cannot exceed your remaining tax liability after subtracting credits like the Child Tax Credit, education credits, and foreign tax credit.
Line 16 captures any unused credit that carries forward to next year. File this form even if you cannot use the full credit in 2025.
Part II: Energy Efficient Home Improvement Credit (Section 25C)
Part II is divided into Section A (building envelope components) and Section B (residential energy property).
Lines 17a–17e are eligibility checkboxes. You must confirm the improvements are to your main home in the U.S., you are the original user, and components will last at least 5 years. If you check “No” on any of these, you cannot claim the credit.
Line 18a: Enter costs for insulation and air sealing materials. Capped at $1,200 on Line 18b.
Lines 19a–19h: Enter exterior door costs. Report the most expensive door on Line 19a with its QMID on Line 19b. Enter up to two more doors and QMIDs on Line 19d. All remaining doors go on Line 19e with an attached statement listing each QMID and cost. The total on Line 19h is capped at $500.
Lines 20a–20b: Enter window and skylight costs. Report the four most expensive items with QMIDs on Line 20a. All others go on Line 20b with an attached statement. Total capped at $600 on Line 20d.
Lines 22a–22d: Central air conditioners. Enter the most expensive unit with QMID on Line 22a. Others on Line 22b. Capped at $600.
Lines 23a–23d: Gas, propane, or oil water heaters. Two most expensive with QMIDs on Line 23a. Others on Line 23b. Capped at $600.
Lines 24a–24d: Furnaces and hot water boilers. Most expensive with QMID on Line 24a. Others on Line 24b. Oil furnaces must also meet 2021 Energy Star criteria and support at least 20% eligible fuel blend. Capped at $600.
Lines 25a–25e: Electrical panel upgrades (enabling property). You must check “Yes” on Line 25a confirming the panel enables a separate qualifying energy property installed the same year. Capped at $600.
Lines 26a–26c: Home energy audits. The auditor must be certified by a Qualified Certification Program. The written report must include the auditor’s name, EIN, certification attestation, and program name. Capped at $150.
Lines 29a–29h: Heat pumps, heat pump water heaters, biomass stoves, and biomass boilers. Report each item with its QMID. Capped at $2,000.
Line 30 is where your total Section 25C credit lands. Line 32 is the final credit after applying the tax liability limitation.
Costly Mistakes That Shrink or Kill Your Credit
Mistake 1: Missing the QMID on Your 2025 Return
The IRS will not allow the credit for any Section 25C item placed in service in 2025 without a valid QMID on your return. The only exception is insulation and air sealing materials. Ask your contractor or manufacturer for this number before you file.
Mistake 2: Claiming Labor Costs on Building Envelope Components
Labor costs for installing doors, windows, skylights, and insulation do not qualify under Section 25C. Only the material cost counts. Many homeowners include the full invoice and end up with an inflated credit that triggers an IRS adjustment.
Mistake 3: Waiting Until 2026 to Install
The credit applies when the property is installed, not when you buy it. A purchase in December 2025 that is not installed until January 2026 is ineligible. Both Section 25C and Section 25D terminate after December 31, 2025.
Mistake 4: Expecting a Refund Check
Both credits are nonrefundable. If your credit exceeds your tax liability, you do not get a refund for the difference. Section 25D lets you carry the excess forward. Section 25C does not — that excess is gone.
Mistake 5: Claiming the Credit on a Rental Property
Neither credit is available to landlords or property owners who do not live in the home. If you rent out the property, you cannot claim Section 25C or Section 25D, even if the upgrades meet every efficiency standard.
Mistake 6: Forgetting to Subtract Utility Subsidies
If your utility company gave you a subsidy for buying or installing the equipment, you must reduce your qualifying expenses by that amount before calculating the credit. Failing to do so overstates your credit and can trigger penalties.
Mistake 7: Confusing Energy Star with Energy Star Most Efficient
Exterior windows and skylights under Section 25C must meet Energy Star Most Efficient certification — not just standard Energy Star. These are two different tiers. Products that meet standard Energy Star but not the Most Efficient tier do not qualify.
What to Do and What to Avoid
| Do | Why It Matters |
|---|---|
| Get the QMID from the manufacturer before installation | Required for every 25C item in 2025; no QMID means no credit |
| Keep all receipts and manufacturer certifications | The IRS may request proof; you need documentation to survive an audit |
| Confirm products meet CEE highest efficiency tier or Energy Star Most Efficient | Products below these tiers do not qualify, even if labeled “energy efficient” |
| File Form 5695 even if you cannot use the full credit | Section 25D unused credit carries forward to future years |
| Complete installation by December 31, 2025 | Both credits expire after this date under the OBBBA |
| Don’t | Why It Matters |
|---|---|
| Include labor costs for windows, doors, or insulation | Labor is excluded for building envelope components under 25C |
| Claim the credit on a rental property | Only your main home (and second home for 25D) qualifies |
| Assume state “rebates” reduce your federal credit | Most state incentives do not meet the federal rebate definition |
| Wait until you file to ask for QMIDs | Manufacturers may be difficult to reach months after installation |
| Forget to reduce costs by utility subsidies | Overstating expenses can lead to IRS penalties and interest |
Benefits and Drawbacks of the Energy Efficient Tax Credit
| Pros | Cons |
|---|---|
| 30% credit rate covers a meaningful share of upgrade costs | Credits are nonrefundable — you lose what you cannot use (25C has no carryforward) |
| Section 25C resets every year with no lifetime cap | Annual caps limit the credit to $3,200 max per year under 25C |
| Section 25D has no annual or lifetime dollar limit | Both credits expire after December 31, 2025, under the OBBBA |
| Heat pump credit ($2,000) is separate from the $1,200 general cap | QMID requirement adds paperwork and risk of disqualification |
| Section 25D allows carryforward of unused credits | Landlords and rental property owners are completely excluded |
| State incentives often stack on top of federal credits | Some state incentives may count as taxable federal income |
| Credits lower your tax bill dollar-for-dollar, not just taxable income | Products must meet specific efficiency tiers — not all “efficient” products qualify |
Home Energy Audits: The $150 Credit Most People Skip
A qualified home energy audit can earn you a tax credit of up to $150 under Section 25C. The audit must produce a written report that identifies the most cost-effective energy improvements for your home, with estimated energy and cost savings for each improvement.
Starting in 2024, the auditor must be a Qualified Home Energy Auditor certified by a program listed on the Department of Energy’s website. The written report must include the auditor’s name, EIN or taxpayer identification number, a certification attestation, and the name of the certification program.
This $150 credit is separate from your other Section 25C credits. It falls within the $1,200 overall cap but does not reduce your window, door, or insulation credit limits. Many homeowners skip this credit because the amount seems small — but a $150 credit for a $500 audit still covers 30% of the cost.
Condominiums, Cooperatives, and Shared Ownership
If you live in a condominium or cooperative, you can claim your proportionate share of qualifying improvements made by your association or corporation. The IRS treats you as having paid your portion of any energy improvement costs incurred by the management association.
A new checkbox was added to the 2025 Form 5695 for condominium and cooperative owners to indicate fractional shares. If your condo association installs a new qualifying boiler for $50,000 and your ownership share is 5%, your qualifying expense is $2,500. Your credit would be $2,500 × 30% = $750, subject to the $600 per-item cap for boilers.
Joint Occupants: How to Split the Credit
If you share a home with someone who is not your spouse, each person must file their own Form 5695. The IRS allocates the credit based on how much each occupant paid for the qualifying property.
If the combined credit for all occupants exceeds the per-item cap, each person’s share is calculated as a fraction: the amount you paid divided by the total amount all occupants paid, multiplied by the credit cap. Married couples filing jointly do not need to split the credit — they file one Form 5695 together.
For example, two roommates install a qualifying heat pump for $14,000. Roommate A pays $8,000 and Roommate B pays $6,000. The $2,000 cap is split: Roommate A gets $2,000 × ($8,000 / $14,000) = $1,143. Roommate B gets $2,000 × ($6,000 / $14,000) = $857.
Reducing Your Home’s Cost Basis
One detail most homeowners overlook: the IRS requires you to reduce the cost basis of your home by the amount of any residential energy credit you claim. If you claim a $5,000 credit for solar panels, your home’s basis drops by $5,000. This affects your gain calculation when you sell the home.
For most homeowners, the $250,000 single / $500,000 married capital gains exclusion on a primary residence sale makes this a non-issue. But for homeowners in high-appreciation markets or those who have already used part of their exclusion, the basis reduction could result in a larger taxable gain at sale.
Key Organizations and Their Roles
The IRS administers both credits and publishes Form 5695 with detailed instructions. All rules about eligibility, dollar limits, and filing requirements come from the IRS.
Energy Star is the EPA-DOE program that certifies products for energy efficiency. Section 25C requires exterior doors to meet Energy Star requirements and windows to meet Energy Star Most Efficient requirements.
The Consortium for Energy Efficiency (CEE) sets efficiency tiers for HVAC equipment. Central air conditioners, water heaters, furnaces, and boilers must meet or exceed the CEE highest efficiency tier (not including advanced tiers) in effect at the start of the year.
The Department of Energy (DOE) maintains the list of Qualified Certification Programs for home energy auditors and provides guidance on the Home Energy Rebates Program.
Qualified Manufacturers are the companies that produce eligible products and issue QMIDs. Without the manufacturer’s QMID, your 2025 Section 25C credit is dead on arrival.
FAQs
Can I claim both Section 25C and Section 25D in the same year?
Yes. You can claim both credits on the same Form 5695. Section 25C covers home improvements and Section 25D covers clean energy systems, each with separate limits.
Do these credits expire after 2025?
Yes. The One Big Beautiful Bill Act terminates both Section 25C and Section 25D for any expenditures made after December 31, 2025.
Can I claim the credit on a rental property I own?
No. Both credits require you to live in the home. Landlords and property owners who do not occupy the home are ineligible.
Is the energy efficient tax credit refundable?
No. Both credits are nonrefundable. You cannot receive more back than you owe in taxes. Section 25D allows unused credit carryforward; Section 25C does not.
Do I need a QMID for solar panels?
No. The QMID requirement applies only to Section 25C items installed in 2025. Section 25D clean energy property like solar panels does not require a QMID.
Can I claim the credit for a new home I just built?
No for Section 25C — it covers only existing homes. Yes for Section 25D — the clean energy credit applies to both new and existing homes.
Does the credit cover labor costs?
Yes for residential energy property under 25C (heat pumps, furnaces, etc.) and all 25D property. No for building envelope components like doors, windows, and insulation.
Can I claim the credit on my second home?
No for Section 25C — only your main home qualifies. Yes for most Section 25D property, except fuel cells, as long as you live there part-time and do not rent it out.
What happens if my credit is larger than my tax bill?
No refund is issued. Under Section 25D, the unused portion carries forward to future years. Under Section 25C, the unused portion is permanently lost.
Do state rebates reduce my federal tax credit?
No in most cases. State energy incentives generally do not meet the federal definition of a purchase-price adjustment, so they do not reduce your qualifying expenses.
Can I claim the credit if I financed the upgrade with a loan?
Yes. You can claim the credit even if you financed the purchase with a personal loan, home equity loan, or credit card. Do not include interest or loan origination fees in your qualifying expenses.
Is a home energy audit required to claim other credits?
No. The audit is a standalone credit of up to $150. You do not need an audit to claim credits for windows, heat pumps, solar panels, or any other qualifying property.
Related reading
- Which Heat Pumps Qualify for Tax Credits? + FAQs
- Can You Deduct Solar Panels On Your Taxes? + FAQs
- What Appliances Qualify for the Energy Tax Credit? + FAQs
- Does a New Roof Qualify for Energy Tax Credit? + FAQs
- Can Solar Tax Credit Be Carried-Forward? (Avoid this Mistake) + FAQs
- Do Energy Credits Offset Capital Gains? (w/Examples) + FAQs
- What Happens to the Senior Deduction After 2028? (w/Examples) + FAQs