Update (2026): The federal Residential Clean Energy Credit (Section 25D) expired December 31, 2025, following the passage of the One Big Beautiful Bill Act (OBBBA). The information below reflects historical credit availability. Check state and local programs for current incentives.
Over 4.7 million U.S. homes now have solar installations, a number that continues to climb as homeowners seek to lower their utility bills by an average of $1,500 annually. The federal government directly supports this transition with a powerful financial incentive designed to make clean energy more accessible. So taking advantage of this credit in 2026 is a direct path to reducing the net cost of a new solar energy system.
What is the Current Solar ITC Credit Percentage and Are There Any Financial Caps?
The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, and the IRS treats an expenditure as made when installation is completed (IRS FS-2025-05). Federal tax credits for this work have ended, but state, local and utility rebates may still apply; check what is available at your address with the DuloCore rebate calculator. And this credit equals 30% of the total project cost, with no upper dollar limit on its value.
The current Solar ITC provides a 30% tax credit (this federal credit ended for expenditures made after December 31, 2025) against the total cost of installing a residential solar energy system. The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, and the IRS treats an expenditure as made when installation is completed (IRS FS-2025-05). So a $30,000 solar installation generates a $9,000 tax credit. This credit, established under the Inflation Reduction Act, is a dollar-for-dollar reduction in federal income taxes owed. And if the credit exceeds the tax liability for a given year, the remaining amount carries forward to future tax years. This structure makes it a cornerstone of federal energy tax credits and a primary driver for residential solar adoption. It covers not just the panels but also labor, wiring, inverters, and mounting equipment.
Who Qualifies for the Solar ITC and Which Solar Equipment is Eligible?
The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, and the IRS treats an expenditure as made when installation is completed (IRS FS-2025-05). And eligible equipment includes solar photovoltaic (PV) panels, solar water heaters, and battery storage systems with a capacity of 3 kWh or more.
The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, and the IRS treats an expenditure as made when installation is completed (IRS FS-2025-05). And the system must be new or used for the first time; the credit can only be claimed on the "original installation" of the solar equipment. The home where the system is installed does not need to be the taxpayer's primary residence. So vacation homes and secondary residences qualify. Eligible costs include the solar PV panels or cells, power conditioning equipment like inverters, and energy storage devices.
"The credit is allowable for the year the solar energy property is placed in service. This is generally the year the installation is complete." — IRS.gov
This also includes the balance-of-system equipment, such as wiring and mounting hardware, and all labor costs for on-site preparation, assembly, and installation. Learn more about qualifying systems with our guide to solar panel rebates.
How Do You Apply for the Solar ITC and What Forms Are Needed?
Form 5695 only covers qualifying work completed by December 31, 2025 and claimed on a 2025 return; the federal 25C and 25D credits ended after that date (IRS FS-2025-05). And this form calculates the total credit amount based on eligible project costs, which then reduces the taxpayer’s overall tax liability.
The application process is integrated directly into the annual tax filing. First, you must calculate the total cost of your solar installation, including equipment and labor. Form 5695 only covers qualifying work completed by December 31, 2025 and claimed on a 2025 return; the federal 25C and 25D credits ended after that date (IRS FS-2025-05). It's essential to keep all receipts and documentation from the solar installation company, as the IRS requires proof of purchase and installation costs. So homeowners should consult a tax professional to ensure accurate filing. Use our free rebate calculator to estimate your potential tax credit and overall savings.
What Are the Key Start and End Dates for the Solar ITC?
The 30% Solar ITC rate is available for all qualifying systems installed between January 1, 2022, and December 31, 2025. And the credit percentage is scheduled to decrease to 22% for systems installed in 2033, before expiring completely for residential installations starting in 2034.
The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, and the IRS treats an expenditure as made when installation is completed (IRS FS-2025-05). And this legislation extended and increased the credit to 30% for a full decade, providing long-term certainty for homeowners. So any system placed in service before the end of 2025 receives the full 30% credit. But starting January 1, 2033, the credit steps down to 22%. The final year to claim any residential credit is 2033. After that, the credit is scheduled to be eliminated unless Congress acts to extend it again. This timeline creates a clear window for homeowners to maximize their financial return on a solar investment.
Federal Energy Credit Comparison (2026)
| Feature | Solar ITC (Residential Clean Energy) | Energy Efficient Home Improvement Credit |
|---|---|---|
| Credit Amount | 30% of total project cost | 30% of project cost, capped annually |
| Annual Cap | No upper limit | $1,200 base annual cap; up to $3,200 |
| Eligible Tech | Solar PV, solar water, battery storage | Doors, windows, insulation, heat pumps |
| Expiration | Steps down in 2033, ends 2034 | Expires after December 31, 2025 |
Can You Stack the Solar ITC with Other State or Local Incentives?
Yes, the federal Solar ITC can be combined with state, local, and utility incentives. But the interaction affects the calculation of the federal credit. And if a state or utility rebate is considered a price reduction, it lowers the project cost basis before applying the 30% federal credit (this federal credit ended for expenditures made after December 31, 2025).
When stacking incentives, the rules vary. State tax credits generally don't reduce the federal credit's basis. So a homeowner can claim both credits on their full amounts. However, rebates from a utility company are often treated differently. The IRS typically views these as a reduction in the purchase price of the system. For example, if a $25,000 solar system receives a $3,000 utility rebate, the basis for the federal ITC becomes $22,000. And the 30% federal credit (this federal credit ended for expenditures made after December 31, 2025) would then be $6,600, not the $7,500 it would have been otherwise. Many homeowners find combining federal credits with local heat pump rebates an effective strategy for whole-home electrification.
Official Sources
- ENERGY.gov Homeowner’s Guide to the Federal Tax Credit — Official guidance from the Department of Energy on qualifying for the solar tax credit. (note: the federal 25C and 25D credits ended for projects completed after December 31, 2025)
- IRS Form 5695 Instructions — The official IRS form and instructions for claiming residential energy credits.
- DSIRE Database of State Incentives — A comprehensive database of state and local renewable energy and efficiency incentives.
Frequently Asked Questions
What types of solar energy systems qualify for the ITC?
Qualifying systems include solar photovoltaic (PV) systems that generate electricity, solar water heaters certified by the Solar Rating Certification Corporation, and battery storage technology with a capacity of 3 kilowatt-hours (kWh) or greater. And the equipment must be new and installed at a primary or secondary residence located in the United States.
What is the current percentage for the federal solar investment tax credit?
The federal Residential Clean Energy Credit (Section 25D) ended for expenditures made after December 31, 2025, and the IRS treats an expenditure as made when installation is completed (IRS FS-2025-05). This 30% rate applies to all qualifying solar energy systems installed and placed in service between January 1, 2022, and December 31, 2025.
How do I claim the solar ITC on my income taxes?
Form 5695 only covers qualifying work completed by December 31, 2025 and claimed on a 2025 return; the federal 25C and 25D credits ended after that date (IRS FS-2025-05). So you must have sufficient tax liability to utilize the credit, though it can be carried forward.
When is the last day to install solar and qualify for the full ITC?
The last day to have a system installed and placed in service to qualify for the full 30% ITC is December 31, 2025. For systems placed in service in 2033, the credit percentage drops to 22%. And the credit is set to expire for residential properties starting in 2034.
Can I combine the solar ITC with other state or local incentives?
Yes, the federal solar ITC can be combined with state, local, and utility incentives. But utility rebates often reduce the system's cost basis, which lowers the amount of the federal credit. For example, a $2,000 utility rebate on a $20,000 system reduces the basis to $18,000 before calculating the 30% federal credit (this federal credit ended for expenditures made after December 31, 2025).
Ready to See Your Solar Savings?
Don't guess how much you can save. Use the DuloCore Rebate Calculator to get a precise estimate of your federal tax credit and local incentives for a new solar installation.
Last updated: April 14, 2026. Reviewed by the DuloCore Editorial Team. About our authors.
Check your California solar rebate eligibility — see the programs you qualify for and the dollar amounts on our California solar rebate finder.