How to Claim the 30% Federal Solar Tax Credit (ITC) in 2026

Ready to claim the 30% federal solar tax credit in 2026? Formally known as the Residential Clean Energy Credit (under Section 25D of the Internal Revenue Code), this dollar-for-dollar incentive allows you to recoup 30% of your total solar and battery storage installation costs. However, filing incorrectly can lead to delays or missed savings. This comprehensive guide outlines qualifying expenses, provides step-by-step instructions on filling out IRS Form 5695, details how rollover rules work, and shows how you can maximize your solar savings on your annual tax returns.

Understanding the 30% Residential Clean Energy Credit

The Federal Investment Tax Credit (ITC) is not a deduction from your taxable income. Instead, it is a direct reduction of your federal tax liability. If your federal tax bill is $8,000, and you qualify for an $8,000 solar credit, your tax bill drops to exactly zero.

The credit was significantly expanded by the Inflation Reduction Act (IRA) of 2022. This landmark legislation stabilized the residential clean energy market by locked-in the credit rate at 30% through 2032. Starting in 2033, the credit will begin a gradual phase-out: stepping down to 26% in 2033, 22% in 2034, and scheduled to expire in 2035 unless renewed by Congress.

Eligibility Requirements

To claim the credit in 2026, you must meet the following eligibility criteria:

• Ownership: You must own the solar energy system (cash purchase or solar loan). Leased systems or PPAs do not qualify you for the credit because the leasing company owns the equipment. Learn more in our solar lease buyout guide.
• Primary or Secondary Residence: The system must be installed at a home you live in within the United States (commercial or rental properties do not qualify under Section 25D, though they may qualify under Section 48).
• Placed in Service: You must claim the credit in the tax year the system is fully installed and begins generating power.

Qualifying vs. Non-Qualifying Solar Expenses

Homeowners often try to include other home improvements in their solar cost basis. The table below details what the IRS permits you to include in your tax credit calculation:

The Solar Roof Replacement Nuance

A common point of confusion is whether a roof replacement can be included in the solar cost basis. According to IRS Section 25D, standard roofing materials (such as shingles, tiles, or metal panels) do not generate electricity and are excluded from the tax credit basis, even if installed to prepare for solar panels.

However, if you install integrated solar shingles or solar tiles (like the Tesla Solar Roof), the active area of the roof that directly generates electricity qualifies for the 30% credit. The inactive structural components of the roof remain excluded. For authoritative details, review publications from the U.S. Department of Energy (DOE).

Standalone Battery Storage Guidelines

One of the most significant changes introduced by the Inflation Reduction Act of 2022 involves home battery storage systems. Before 2023, battery storage was only eligible for the federal tax credit if the battery was charged 100% by an on-site solar energy system.

Beginning in tax year 2023 and continuing through 2026, standalone battery storage systems qualify for the 30% federal tax credit, provided the battery has a storage capacity of 3 kWh or greater. This means you can install a home backup battery (like the Tesla Powerwall 3 or Enphase IQ Battery 5P) to protect your home from blackouts and charge it directly from the utility grid, and still claim the full 30% Section 25D credit. This is highly beneficial for homeowners who want energy resilience but cannot install solar due to heavy shading or roof orientation.

Stacking Incentives: How Rebates Affect Your Cost Basis

When calculating your tax credit basis, you must account for other rebates and incentives. The IRS treats incentives differently based on their structure:

• Utility Rebates: Upfront cash rebates from your utility company (like solar installation rebates) are typically considered tax-exempt. However, you must subtract the rebate amount from your system cost before calculating the 30% tax credit. For example, if your system costs $20,000 and your utility provides a $2,000 rebate, your credit basis is $18,000, yielding a $5,400 federal credit.
• State Tax Credits: State-level income tax credits (like the Massachusetts or Maryland state solar tax credits) do not reduce your federal cost basis. You can claim the full 30% federal credit on your gross system cost, though the state credit may be treated as taxable income at the federal level.
• SRECs (Solar Renewable Energy Certificates): Payments received from selling SRECs are considered taxable income, but they do not reduce your federal cost basis for the ITC.

Solar Tax Credits and Home Sales

Homeowners often worry about what happens to their tax credit if they sell their house shortly after going solar. The IRS rules provide clear guidance on these scenarios:

• No Recapture: Unlike commercial tax credits, the residential clean energy credit under Section 25D has no recapture provision. Once you claim the credit in the tax year the system is placed in service, the credit belongs to you. If you sell the home the following year, you are not required to repay any portion of the credit to the IRS.
• Buyer Eligibility: The buyer of a home with an existing, operational solar system cannot claim the tax credit. Because the system was already placed in service by the original owner, it is considered used equipment, and the new buyer's cost basis for the solar panels is $0 for tax credit purposes.

Step-by-Step Guide: How to Complete IRS Form 5695

When filing your annual tax returns, you must complete the following steps to claim the Residential Clean Energy Credit:

Step 1: Collect Contractor Invoices

Gather your final solar installation contract, invoice receipts, and certification forms from your installer. The total cost must reflect the net price you paid (meaning you must subtract any direct cash rebates or state subsidies you received from the utility company before calculating the 30% basis).

Step 2: Complete IRS Form 5695 Line-by-Line

Download the current year's version of IRS Form 5695 (Residential Clean Energy Credits). You will report your qualified solar costs on Part I of the form:

• Line 1 (Solar Electric Property Costs): Enter the total gross cost of your solar panels and inverters.
• Line 5 (Battery Storage Costs): Enter the cost of your home battery backup (e.g. Tesla Powerwall 3).
• Line 6: Add lines 1 through 5.
• Line 9: Multiply line 6 by 30% (0.30) to calculate your tentative clean energy credit.
• Line 13: Calculate your tax liability limit using the IRS Residential Clean Energy Credit Limit Worksheet.
• Line 14: Enter the smaller of Line 9 or Line 13. This is the credit amount you can claim this year.
• Line 15: Subtract Line 14 from Line 9. This is your rollover balance to carry forward to next year.

Step 3: Transfer to Form 1040

Calculate your tax liability limit on Page 2 of Form 5695. Once calculated, carry your final credit value over to Schedule 3 (IRS Form 1040) and enter it on the appropriate line for non-refundable personal credits. This value directly reduces the tax you owe on Form 1040.

Understanding Tax Liability & Rollover Rules

The Section 25D tax credit is a non-refundable credit. This means that the IRS will not issue you a refund check for any credit value that exceeds your total tax liability for the year.

For example, if your 30% solar credit is $9,000, but your total federal tax liability for the year is only $6,000, your tax bill will be reduced to $0. The remaining $3,000 is not lost; under IRS guidelines, you can roll over the unused credit portion to the following tax year. You can continue rolling over the remaining credit balance for as long as the Section 25D program remains active.

Multi-Year Rollover Worksheet Example

The table below demonstrates how a homeowner with a $15,000 tax credit and $4,000 annual tax liability rolls over the credit across 3 consecutive years:

Additionally, claiming the standard deduction does not impact your eligibility. You can claim the full 30% clean energy credit whether you itemize your deductions or choose the standard deduction. Learn more in our guide on solar tax credits and the standard deduction.

Frequently Asked Questions