Calculate your federal solar Investment Tax Credit (ITC) based on total system cost. Estimate the 30% federal tax credit for residential solar installations.
The federal solar Investment Tax Credit (ITC) is the single largest financial incentive for residential solar in the United States. Under the Inflation Reduction Act of 2022, the ITC provides a 30% tax credit on the total cost of a solar energy system installed between 2022 and 2032. This means if your system costs $20,000, you receive a $6,000 credit against your federal income tax.
The ITC is a dollar-for-dollar tax credit, not a deduction. A $6,000 credit directly reduces your tax bill by $6,000, which is far more valuable than a $6,000 deduction. The credit applies to all costs including equipment, labor, permitting, and sales tax on the system. Battery storage systems charged from solar also qualify.
This calculator estimates your ITC credit based on system cost and the applicable ITC rate. The rate is 30% through 2032, then steps down to 26% in 2033 and 22% in 2034. After 2034, the residential ITC expires unless extended by Congress.
The ITC reduces your net solar cost by 30%, dramatically improving payback and ROI. Understanding the exact credit amount helps you plan your tax strategy and budget for the installation. Consistent measurement creates a reliable baseline for tracking energy efficiency improvements and validating the impact of conservation measures and equipment upgrades over time.
ITC Credit = Total System Cost × ITC Rate Net Cost After ITC = Total System Cost − ITC Credit
Result: $6,600 tax credit
A $22,000 solar system at the 30% ITC rate: $22,000 × 0.30 = $6,600 federal tax credit. Your net cost drops to $15,400. If you also install a $10,000 battery, the combined ITC is $9,600, bringing total net cost to $22,400.
The Inflation Reduction Act extended the 30% ITC through 2032, providing long-term certainty for homeowners. The rate then steps down: 26% in 2033 and 22% in 2034. After 2034, the residential credit expires. Installing before 2033 locks in the maximum benefit.
Include all eligible costs in your ITC calculation: panels, inverters, batteries, racking, wiring, labor, permitting, engineering, and even sales tax on the equipment. Some homeowners add batteries specifically to increase their ITC claim.
The federal ITC stacks with most state and local incentives. You can claim the federal 30% credit plus state rebates, SRECs, property tax exemptions, and utility incentives. However, some state rebates may need to be subtracted from your ITC basis — consult a tax advisor for your specific situation.
The ITC is a federal tax credit equal to 30% of your total solar system cost. When you file your taxes, you claim the credit on Form 5695, which directly reduces your tax obligation. It's a credit, not a deduction, so it reduces your taxes dollar-for-dollar.
All costs associated with the solar installation qualify: panels, inverters, racking, wiring, labor, permitting fees, interconnection fees, sales tax, and battery storage. Roof repairs needed specifically for solar may also qualify.
The ITC is non-refundable, meaning it can only reduce your taxes to zero. However, unused credit can be carried forward to future tax years until fully utilized. There's no time limit on carryforward.
The 30% rate applies to systems installed through December 31, 2032. It drops to 26% in 2033 and 22% in 2034. After 2034, the residential ITC is scheduled to expire, though Congress may extend it.
Yes. Under the Inflation Reduction Act, standalone battery storage qualifies for the ITC starting in 2023. Previously, batteries had to be charged primarily from solar to qualify. Now any battery system of 3 kWh or larger is eligible.
If you lease the system, the leasing company claims the ITC, not you. The benefit is typically passed through as lower lease payments. For full ITC benefit, you need to own the system outright or through a loan.