Federal Solar Tax Credit 2026: Complete Guide to the 30% ITC (Form 5695, Eligibility & FAQ)

What Is the Federal Solar Tax Credit (ITC)?

The Federal Investment Tax Credit (ITC) is a dollar-for-dollar reduction in the federal income tax you owe. It was established by the Energy Policy Act of 2005 and has been extended multiple times. Under the Inflation Reduction Act (2022), the ITC is set at 30% through 2032, then steps down to 26% in 2033 and 22% in 2034.

Important: A tax credit is different from a tax deduction. A deduction reduces your taxable income, but a credit directly reduces the amount of tax you owe. For example, if you owe $15,000 in federal income tax and claim a $7,500 solar tax credit, you only pay $7,500.

How Much Can You Save? (With Examples)

The amount you can save depends on the total qualified cost of your solar system. The following costs are eligible for the 30% credit:

• Solar panels (modules)
• Inverters (string or microinverters)
• Mounting equipment (rails, racking, roof attachments)
• Electrical wiring and disconnects
• Battery storage systems (≥3 kWh capacity)
• Installation labor
• Permitting and inspection fees
• Sales tax on solar equipment

Eligibility Requirements (Do You Qualify?)

To claim the federal solar tax credit, ALL of the following must be true:

1. You own the solar system (you bought it with cash or a loan). If you have a solar lease or Power Purchase Agreement (PPA), the installer claims the tax credit, not you.
2. You own the home where the system is installed (or you are a part-owner). Renters cannot claim the credit unless they own the system and it's on their primary/secondary residence.
3. The system is new or being used for the first time. Used solar equipment does not qualify.
4. The system is installed in the United States (including Puerto Rico, Guam, and the US Virgin Islands).
5. You have sufficient federal tax liability in the year the system is placed in service. If your tax liability is less than the credit, the unused portion carries forward indefinitely to future tax years.

How to Claim the Solar Tax Credit (Step-by-Step)

Step 1: Collect Your Documents

You need: (1) Final invoice from your installer showing total system cost, (2) Permission to Operate (PTO) letter from your utility (proves the system was operational in the tax year), and (3) IRS Form 5695 (download from IRS.gov).

Step 2: Complete IRS Form 5695

Form 5695 is used to calculate your residential energy credit. For solar, you'll complete Part I – Solar Electric Property. Enter the total cost of your solar system on Line 1. Multiply by 0.30 (30%) on Line 6. Then transfer the result to Schedule 3 (Form 1040), Line 5.

Step 3: File Your Tax Return

Attach Form 5695 to your federal tax return (Form 1040). If you use tax software (TurboTax, H&R Block, etc.), search for "Form 5695" or "energy credit" to add it. If you use a tax preparer, tell them you installed solar and need to claim the ITC.

Step 4: Keep Records for 3+ Years

The IRS may audit your tax return. Keep the following documents for at least 3 years after filing:

• Final paid invoice from your solar installer
• Permission to Operate (PTO) letter from your utility company
• Manufacturer certification statement (your installer should provide this)
• Copy of IRS Form 5695 as filed

What If I Don't Owe Federal Income Tax?

If your federal tax liability is zero (e.g., you have low income or receive the Earned Income Tax Credit), the solar ITC will not help you in the current year. However, the credit carries forward indefinitely. This means if you can't use the full credit this year, you can apply it to next year's taxes, and the year after that, and so on.

Example: You install a $20,000 solar system in 2026. The tax credit is $6,000. But your federal tax liability is only $2,000 in 2026. You use $2,000 of the credit in 2026, and carry forward $4,000 to 2027. If your 2027 liability is $5,000, you use the remaining $4,000 and pay only $1,000.

State-Specific Solar Incentives (Add-On Savings)

In addition to the federal 30% credit, many states offer additional incentives. The best comprehensive database is DSIRE (Database of State Incentives for Renewables & Efficiency). Common state-level incentives include:

• State tax credits: New York offers an additional 25% credit (up to $5,000). South Carolina offers 25% (up to $3,500).
• Solar rebates: Some utilities (e.g., LADWP in Los Angeles) offer upfront rebates of $0.20–$0.50 per watt.
• Property tax exemption: In many states, adding solar does not increase your property tax assessment.
• Sales tax exemption: In Florida, Texas, and New York, solar equipment is exempt from state sales tax.

What Happens to the Tax Credit When I Sell My Home?

The IRS does not "claw back" the credit upon home sale. The new homeowner inherits the solar system and its remaining warranty, but the tax credit you claimed stays claimed. There is no recapture provision for residential solar ITC (unlike some commercial credits).

Additionally, solar panels typically increase your home's resale value. Multiple studies (including a Zillow study of 3.7 million homes) found that homes with solar sell for 4.1% more on average than comparable homes without solar. In California, the premium is even higher (up to 5.4%).

Frequently Asked Questions About the Federal Solar Tax Credit