What Is the Federal Solar Investment Tax Credit?
The federal solar Investment Tax Credit (ITC) is one of the most powerful financial incentives available to American homeowners going solar. Established under the Energy Policy Act of 2005 and significantly extended and expanded by the Inflation Reduction Act of 2022, the ITC allows you to deduct 30% of the total cost of your solar energy system directly from your federal income tax bill.
This is a tax credit, not a deduction — meaning it reduces the actual taxes you owe dollar-for-dollar, not merely your taxable income.
How Much Can You Save?
The math is straightforward. If your complete solar installation costs $28,000, you can claim a credit of $8,400 against your federal taxes. That's a direct reduction in what you owe the IRS — not a refund, but an offset of your tax liability.
The 30% rate currently applies to systems installed through 2032, after which the rate is scheduled to step down to 26% in 2033 and 22% in 2034, before potentially expiring. Locking in an installation while the full 30% credit applies is a key consideration for timing your solar purchase.
What Costs Are Eligible?
The ITC covers more than just the solar panels themselves. Eligible costs include:
- Solar panels and all associated hardware
- Inverters (string, microinverters, or power optimizers)
- Battery storage systems — added explicitly by the Inflation Reduction Act, even standalone battery systems installed without new panels may qualify
- Labor costs for installation, including electrician fees
- Permit and inspection fees
- Sales taxes on eligible equipment
- Roof work directly required for the solar installation (consult a tax professional for specifics)
Who Qualifies?
To claim the federal ITC, you must meet these conditions:
- You own the system. Homeowners who lease their solar system or enter a Power Purchase Agreement (PPA) do NOT qualify — the third-party owner claims the credit instead.
- The system is at your primary or secondary residence. Investment properties may have different rules; consult a tax advisor.
- The system is new. The ITC applies to original installations, not the purchase of a home with existing solar panels.
- You have sufficient federal tax liability. The credit can only offset taxes you actually owe. If your credit exceeds your liability in the year of installation, the unused portion rolls over to future tax years.
How to Claim the Credit
Claiming the ITC is done through your annual federal tax return. You (or your tax preparer) will complete IRS Form 5695 (Residential Energy Credits) and attach it to your Form 1040. The credit amount from Form 5695 is then entered on your main return to reduce your tax liability.
Key steps:
- Keep all invoices and receipts from your solar installation.
- Confirm with your installer the total eligible cost of the system.
- Complete IRS Form 5695 when filing your taxes for the year the system was placed in service.
- Work with a qualified tax professional if your situation is complex (rental properties, business use, etc.).
State Incentives: Additional Savings on Top of the ITC
The federal ITC stacks with state and local incentives. Many states offer their own tax credits, rebates, or property tax exemptions for solar installations. For example:
- State income tax credits (available in many states) further reduce your state tax bill.
- Property tax exemptions prevent your home's assessed value increase (due to solar) from raising your property taxes.
- Sales tax exemptions on solar equipment purchases are offered in several states.
- Net metering policies allow you to sell excess electricity back to the grid, reducing your ongoing utility bills.
The Bottom Line
The 30% federal tax credit is the single most impactful financial incentive available to solar buyers today. For a typical residential system, it translates to thousands of dollars in real savings. Combined with state incentives, the effective cost of going solar can be dramatically lower than the sticker price suggests. Consult a licensed tax professional to confirm how the credit applies to your specific tax situation.