Federal Solar Tax Credit 2026: How to Claim the 30% ITC
The federal solar tax credit, officially known as the Investment Tax Credit (ITC), remains one of the most valuable incentives available to homeowners going solar in 2026. Thanks to the Inflation Reduction Act, the credit stands at 30 percent of total installation costs with no cap on the dollar amount. Here is what you need to know to take full advantage of it.
How the Federal Solar Tax Credit Works
The ITC is a dollar-for-dollar reduction in the federal income tax you owe. If you install a solar energy system that costs $25,000, you can claim a $7,500 credit on your federal tax return. This is not a deduction; it directly reduces your tax bill.
The credit applies to the total cost of the solar energy system, including panels, inverters, mounting hardware, wiring, battery storage (if installed with solar), labor, permitting fees, and sales tax on equipment.
Current Credit Rates and Timeline
Under the Inflation Reduction Act passed in August 2022, the residential solar tax credit is set at 30 percent for systems installed between 2022 and 2032. After that, the rate steps down to 26 percent in 2033 and 22 percent in 2034. Without further legislation, the residential credit expires after 2034.
Who Qualifies
To claim the credit, you must own the solar energy system (leased systems and power purchase agreements do not qualify), the system must be installed at your primary or secondary residence in the United States, and it must be a new installation (used equipment does not qualify). You must also owe enough federal income tax to use the credit, though unused portions can be rolled forward to the following tax year.
What Costs Are Eligible
The ITC covers a broad range of costs. Solar panels and inverters, racking and mounting equipment, balance-of-system components like wiring and conduit, labor costs for on-site preparation and installation, permitting and inspection fees, sales tax on eligible equipment, and battery storage systems with a capacity of at least 3 kilowatt-hours are all eligible. Roof repairs or replacements that are not directly required for the solar installation are not covered.
How to Claim the Credit
You claim the solar tax credit when you file your annual federal tax return using IRS Form 5695 (Residential Energy Credits). Your solar installer should provide documentation of total system costs. File the form for the tax year in which the system was placed in service, meaning the year it was fully installed and operational.
Combining With State and Local Incentives
The federal tax credit can be combined with most state rebates, utility incentives, and local programs. However, if you receive a state rebate that reduces your out-of-pocket cost, you should generally subtract that rebate from your total cost before calculating the federal credit. State tax credits typically do not reduce your federal credit basis. Because rules vary by state, consulting a tax professional is recommended.
Common Mistakes to Avoid
The most common mistakes include claiming the credit for a leased system, forgetting to roll forward unused credit to the next tax year, and not including all eligible costs such as permitting fees and sales tax. Keep all invoices, contracts, and permit documents for your records in case of an IRS inquiry.
The 30 percent federal solar tax credit is the single largest financial incentive for going solar. Combined with state-level incentives, it can reduce the payback period for a solar installation to five to eight years in many markets. If you have been considering solar, the current credit rate makes 2026 an excellent time to move forward.
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