What Is the Federal Solar Tax Credit?
The federal solar Investment Tax Credit (ITC) allows homeowners to deduct 30% of the total cost of a solar energy system from their federal income taxes. This is a dollar-for-dollar reduction in the amount of income tax you owe — not a deduction from taxable income, which makes it significantly more valuable.
For example, if your solar panel system costs $25,000, the ITC would reduce your federal tax bill by $7,500. If you owe $10,000 in federal taxes, you would only pay $2,500 after applying the credit.
ITC Eligibility Requirements in 2026
To qualify for the federal solar tax credit, your installation must meet these criteria:
- You must own the system. The ITC applies to purchased or financed systems. Solar leases and PPAs do not qualify because the leasing company claims the credit. Learn more about financing options here.
- The system must be installed on your primary or secondary residence. Rental properties do not qualify for the residential credit (but may qualify for the commercial credit).
- The system must be new or being used for the first time. Used or previously installed panels do not qualify.
- You must have sufficient tax liability. If your credit exceeds your tax bill, the remaining credit rolls forward to future tax years.
What Costs Are Covered?
The 30% credit applies to the full installed cost of the system, including:
- Solar panels and inverters
- Battery storage systems (standalone batteries now qualify under the Inflation Reduction Act)
- Mounting hardware and wiring
- Installation labor
- Permitting and inspection fees
- Sales tax on the system
- Energy storage devices with capacity of 3 kWh or greater
How to Claim the ITC: Step-by-Step
- Get your system installed by a qualified contractor. Your installer should provide documentation of total costs.
- Keep all receipts and contracts from the installation, including proof of payment.
- Complete IRS Form 5695 (Residential Energy Credits) when filing your federal tax return.
- Transfer the credit amount to your Form 1040 to reduce your tax liability.
- Carry forward unused credits. If your credit exceeds what you owe, the remainder rolls into next year.
Common Mistakes to Avoid
Many homeowners leave money on the table or run into problems when claiming the ITC:
- Claiming the credit on a leased system. Only system owners can claim the ITC. If you lease, the leasing company gets the credit.
- Not having enough tax liability. The ITC is non-refundable — it reduces what you owe but will not generate a refund beyond zero. Plan ahead with a tax professional.
- Forgetting battery storage. Since the Inflation Reduction Act, standalone battery storage systems qualify independently. If you add batteries, include their cost.
- Missing the deadline. The system must be installed and operational in the tax year you claim the credit.
ITC Phase-Down Timeline
The Inflation Reduction Act of 2022 extended the solar ITC at 30% through 2032. Here is the schedule:
- 2022-2032: 30% credit
- 2033: 26% credit
- 2034: 22% credit
- 2035 and beyond: 0% for residential (10% for commercial)
Key takeaway: The 30% rate is locked in through 2032, but acting sooner means faster savings. Every year you wait is a year of electricity costs you could have avoided. Check your state incentives to see total savings.
Maximizing Your Tax Credit
To get the most from the ITC, consider these strategies:
- Bundle battery storage with your solar installation to increase the total eligible cost.
- Stack with state incentives. Many states offer additional credits and rebates on top of the federal ITC. Find your state's incentives here.
- Time your installation to align with your highest-income tax year to maximize the credit's value.
- Get multiple quotes to ensure you're getting competitive pricing. Compare free quotes on EnergySage.