The Residential Clean Energy Credit — commonly called the federal solar tax credit or Investment Tax Credit (ITC) — is worth 30% of your total solar installation cost, with no dollar cap. On a $25,000 system, that's a $7,500 credit directly off your federal tax bill. It's the single largest financial incentive for going solar in the United States.
Here's everything you need to know to claim it correctly.
What Is the Federal Solar Tax Credit?
The ITC was established under the Energy Policy Act of 2005 and has been extended multiple times. The Inflation Reduction Act (IRA) of 2022 locked in the 30% rate through 2032, then it steps down:
| Year | Credit Rate |
|---|---|
| 2022–2032 | 30% |
| 2033 | 26% |
| 2034 | 22% |
| 2035+ | 0% (residential) |
The message is clear: the longer you wait, the less you get back.
How Much Is the Credit Worth?
The credit equals 30% of your total qualified solar expenses. For most homeowners:
Example Calculation
- System cost (panels, inverter, labor, permits): $28,000
- Battery storage (if included): +$8,000
- Total qualified costs: $36,000
- Federal tax credit (30%): $10,800
- Net cost after credit: $25,200
Note: Battery storage (e.g., Tesla Powerwall) added to a solar installation also qualifies for the 30% credit, even if purchased separately, as long as it's charged primarily by solar.
Who Qualifies?
To claim the credit, you must meet all of the following:
- Own the solar system. Leased systems or PPAs do not qualify — the leasing company claims the credit instead. You must purchase the system outright or via a solar loan.
- It must be a new installation. Used solar equipment does not qualify.
- It's your primary or secondary residence. The credit applies to your main home or a second home (vacation property). It does not apply to rental property you don't live in.
- You have federal tax liability. The credit is nonrefundable — it reduces your tax bill to zero but won't generate a refund beyond that. However, it can be carried forward to future years.
- System is placed in service during the tax year. "Placed in service" means operational and inspected, not just purchased or deposited on.
What Costs Are Covered?
The IRS covers a broad range of costs under the credit:
- Solar panels (photovoltaic modules)
- Inverters (string, micro, or power optimizers)
- Mounting hardware and racking
- Wiring and electrical work
- Labor costs for installation
- Permit fees and inspection fees
- Battery storage (if charged primarily by solar)
- Sales tax on equipment
What's not covered: roof repairs done separately from the solar installation, extended warranties, financing charges, or utility interconnection fees paid to the grid operator.
How to Claim the Credit
You claim the credit on your federal income tax return using IRS Form 5695(Residential Energy Credits). Here's the process:
- Get your final installation invoice. This lists all qualified costs. Keep this with your tax records.
- Confirm system was operational in the tax year. Your installer should provide a Permission to Operate (PTO) letter from the utility or a final inspection sign-off.
- Fill out Form 5695, Part I. Enter your total qualified expenses on Line 1 and calculate the 30% credit on Line 6.
- Transfer the amount to Schedule 3, Line 5. This feeds into Form 1040.
- Carry forward any unused credit. If the credit exceeds your tax liability, complete Line 16 on Form 5695 to carry it to the next year.
Tax rules are complex. Work with a CPA or tax professional for your specific situation, especially if you have AMT exposure, carryforward credits, or are filing jointly with non-standard income.
Can You Combine the ITC with State Incentives?
Yes. The federal credit is fully stackable with state programs. For example:
- Maryland: $1,000 state rebate + federal 30% ITC
- Colorado: $500 state rebate + 30% ITC
- Utah: $400 state rebate + 30% ITC
- Massachusetts: State income tax credit (15%, up to $1,000) + federal 30% ITC
Some utility rebates are excluded from the qualifying cost base for the federal ITC (you can't claim the credit on money you received back as a rebate). Always net out utility-paid rebates before calculating your federal credit.
Solar Loan vs. Cash Purchase — Does It Change the Credit?
No. As long as you own the system (not lease it), financing method doesn't affect your credit eligibility. Whether you pay cash, use a home equity loan, or take a dedicated solar loan, you qualify for the full 30% ITC.
This makes solar loans particularly powerful: you get the asset, the savings, and the tax credit — often allowing you to pay down the loan with the IRS refund in year one.
Calculate Your Solar Tax Credit
Use our free calculator to estimate your system cost, federal tax credit, and 25-year savings for your specific state and electricity bill:
Frequently Asked Questions
Is the solar tax credit a refund or a deduction?
It's a credit — it directly reduces your tax liability dollar-for-dollar, which is much more valuable than a deduction. A $7,500 credit lowers your tax bill by $7,500, regardless of your tax bracket. A deduction would save you far less.
What if I don't owe that much in taxes?
The credit is nonrefundable: if your credit exceeds your tax liability, the excess is not paid out as a refund. However, you can carry the unused portion forward to future tax years until 2035.
Does the credit apply to a second home or vacation home?
Yes, as long as you use it as a personal residence (not a rental property). A vacation home you use personally qualifies.
I'm getting conflicting information about whether my battery qualifies. What's the rule?
Under the IRA (post-2023), standalone battery storage systems qualify for the ITC even without solar, as long as they have a capacity of 3 kWh or more. Before 2023, battery had to be charged 100% by solar to qualify.
My installer offered to do the paperwork for me. Should I let them?
Be cautious. Installers can provide the documentation you need (final invoice, PTO letter), but tax filing is your responsibility. Use a licensed CPA or tax preparer who understands energy credits.