What Is the Solar Investment Tax Credit?
The Solar Investment Tax Credit (ITC) is a federal tax credit worth 30% of your total solar system cost, enacted under the Inflation Reduction Act (IRA) of 2022. It applies to residential and commercial solar installations and is the most valuable solar incentive available to most Americans.
On a $20,000 system, the 30% ITC provides a $6,000 reduction in your federal tax liability.
The Credit Schedule
| Year | Credit Percentage |
|---|---|
| 2022–2032 | 30% |
| 2033 | 26% |
| 2034 | 22% |
| 2035+ | 0% (unless Congress extends) |
The IRA extended the 30% rate through 2032, giving homeowners a decade of certainty. Earlier legislation had the credit expiring at 26% in 2020 and 22% in 2021 before each extension.
What Qualifies for the Credit?
The ITC covers the cost of:
- Solar panels — including all module hardware
- Inverters — string, micro, or power optimizer
- Racking and mounting equipment
- Wiring and electrical components
- Installation labor
- Permit and inspection fees
- Battery storage — if charged by the solar system (as of 2023, standalone batteries charged from the grid also qualify)
- Sales tax on eligible components
The credit applies to the full installed cost, including profit margins — meaning the higher-quality, higher-cost system you choose, the larger the credit you receive.
What Does NOT Qualify?
- Solar systems on rental properties you don't live in (use the commercial ITC instead)
- Solar water heaters (separate credit applies)
- Costs to repair or reinforce your roof (unless directly required for installation)
How to Claim the Credit
Claiming the ITC is straightforward:
- Install your solar system during the tax year
- Obtain your final invoice showing total system cost
- File IRS Form 5695 (Residential Energy Credits) with your annual tax return
- Enter the eligible cost on line 1, calculate 30%, and enter the credit on your Form 1040
You don't need to itemize deductions — the ITC is a nonrefundable tax credit, meaning it reduces your tax bill dollar-for-dollar.
Carryforward Rules
The ITC is nonrefundable — it can reduce your tax liability to $0 but won't generate a refund. However, if your credit exceeds your tax liability in the installation year, you can carry the unused portion forward to future tax years until the credit is fully used. This is valuable for retirees with low tax liability or in low-income years.
Example: Tax liability is $4,000. ITC credit is $6,000. Use $4,000 this year to zero out your tax bill; carry $2,000 forward to next year.
Income Limits
Unlike some other tax incentives, the solar ITC has no income limit. Whether you earn $40,000 or $400,000, you qualify for the same 30% credit — as long as you have sufficient tax liability to use it.
Interaction with State Incentives
State tax credits typically reduce the federal ITC basis. Example: If your state offers a 25% credit on $20,000, your state credit is $5,000, reducing the federal eligible cost to $15,000 (in some states). The specifics vary — consult a tax professional when stacking multiple incentives.
Act Before 2033
The 30% rate is available through 2032 under current law. Given historical patterns (Congress has extended the ITC multiple times), it may be extended again — but there's no guarantee. Installing before December 31, 2032 locks in the 30% credit.