The federal tax credit for commercial solar remains one of the most significant financial incentives available for businesses investing in solar energy systems. For decision-makers evaluating whether a commercial solar project makes financial sense, understanding how the credit works, what qualifies, and what variables affect the final benefit is essential to building an accurate financial model.
This guide explains the commercial solar tax credit framework as it currently stands, addresses the most common questions businesses ask before investing, and identifies where the rules are complex enough to require qualified tax guidance.
The Federal Investment Tax Credit for Commercial Solar
The federal investment tax credit, commonly referred to as the ITC, allows eligible businesses to claim a credit against federal tax liability based on the cost of a qualified solar PV system. For many commercial solar projects, the credit can reach 30 percent of eligible project costs when prevailing wage and apprenticeship requirements are satisfied. Without those requirements, the base credit is generally lower. Projects that do not satisfy those labor standards qualify for a significantly reduced base rate.
The ITC for many commercial solar projects placed in service after 2024 is governed by Section 48E of the tax code, which covers clean electricity investment credits on a technology-neutral basis. This replaced the earlier Section 48 framework. Businesses with projects already underway or recently completed may still fall under Section 48 depending on when construction began. The applicable section affects which rules and bonus credits apply, so the construction start date is a material detail for tax purposes.
The ITC reduces federal tax liability dollar for dollar, which makes it more valuable than a deduction of equivalent size. A business claiming a 30 percent credit on a qualifying solar energy system directly reduces the taxes owed to the federal government by that amount.
Bonus Credits That Can Increase the Benefit
Beyond the base ITC rate, several bonus credits can increase the total credit percentage for qualifying projects. These bonuses are additive, meaning multiple bonuses can potentially apply to the same project depending on eligibility.
The energy community bonus provides an additional 10 percentage points for projects located in communities that have historically relied on fossil fuel industries or that meet specific unemployment and employment criteria. Businesses evaluating sites for commercial solar projects should confirm whether a given location qualifies as an energy community before finalizing site selection.
The domestic content bonus provides an additional credit for projects that use eligible steel, iron, and manufactured products produced in the United States. The bonus amount may vary depending on project facts and the specific requirements met. Businesses should document compliance carefully, as the IRS requires substantiation.
For eligible projects under 5 MW located in low-income communities or on Indian land, additional bonus credit categories may apply depending on project type and whether the project receives an allocation from the IRS. These bonuses are subject to capacity limits and application requirements that make early planning important.
Can Nonprofits and Tax-Exempt Organizations Claim the Credit?
Yes. A provision of the Inflation Reduction Act introduced elective pay, also referred to as direct pay, which allows certain tax-exempt organizations, nonprofits, governmental entities, and tribal organizations to receive the value of the ITC as a direct payment from the IRS rather than as an offset against tax liability. This effectively makes the credit accessible to organizations that do not have federal tax liability in the traditional sense.
Businesses that have tax credits exceeding their current tax liability have another option through transferability, which allows eligible taxpayers to sell their tax credits to third parties in exchange for cash. This mechanism allows businesses to monetize credits they cannot fully use in a given tax year rather than carrying them forward.
Both elective pay and transferability are subject to eligibility requirements and IRS procedures, including IRS pre-filing registration, that require consultation with qualified tax advisors and legal counsel before relying on them in financial projections.
MACRS Depreciation and Bonus Depreciation
The commercial solar tax credit works alongside other federal tax benefits, most notably the Modified Accelerated Cost Recovery System (MACRS). Commercial solar projects typically qualify for five-year MACRS depreciation, allowing businesses to recover the cost of the system on an accelerated schedule rather than over the system’s full useful life. Bonus depreciation may also apply depending on the tax year and applicable rules, allowing businesses to deduct a significant portion of the system cost in the first year.
The interaction between the ITC and depreciation requires careful calculation. Businesses should work with qualified tax professionals to understand how these benefits stack and how the ITC basis reduction affects the depreciation calculation.
The ITC vs. the Production Tax Credit
Some commercial solar projects may qualify for either the investment tax credit or the production tax credit (PTC), which is based on kilowatt-hours of electricity generated rather than system cost. For most commercial solar projects, the ITC is more straightforward to model and more commonly used. The PTC may be more advantageous for projects with very high capacity factors or specific financial structures, but the comparison requires project-specific analysis.
FEOC Rules and Domestic Content Considerations
Businesses pursuing the domestic content bonus credit should be aware of Foreign Entity of Concern (FEOC) restrictions that affect equipment eligibility. Equipment sourced from entities designated as foreign entities of concern may be ineligible for certain bonus credits. These rules have evolved and continue to develop, making it important to verify equipment eligibility before procurement commitments are made.
What About Legislative Changes?
The commercial solar tax credit landscape has been subject to ongoing legislative activity. The Inflation Reduction Act established the current ITC framework, and subsequent legislative changes, including the One, Big, Beautiful Bill Act enacted in 2025, have introduced additional requirements, clarified certain eligibility pathways, and created new uncertainty around future credit timelines, FEOC restrictions, and IRS guidance. Under current IRS guidance, the One, Big, Beautiful Bill Act also introduced termination rules for applicable wind and solar facilities, including rules tied to when construction begins and when a project is placed in service. Battery storage projects placed in service after 2024 are also covered under Section 48E but are subject to the same legislative changes and evolving deadline requirements. Businesses should confirm current deadlines and safe harbor requirements for both solar and storage projects with qualified tax advisors before relying on projected credits.
The IRS Form 3468 is the mechanism through which businesses claim the investment tax credit on their federal tax return. Proper documentation of project costs, labor compliance, and equipment specifications is essential to substantiating the credit.
Applying the Credit: What Businesses Need to Do
Claiming the commercial solar tax credit requires documentation that the project meets eligibility requirements, including construction start date, PWA compliance if applicable, equipment specifications, and project costs. The credit is claimed through IRS Form 3468 as part of the business’s federal tax return for the year the project is placed in service.
Given the complexity of the rules, the interaction between the ITC and depreciation benefits, and the consequences of errors in credit claims, businesses should engage qualified tax advisors and legal counsel before finalizing project financial models that depend on these incentives.
Working With Axium Solar on a Commercial Solar Project
The commercial solar tax credit and related incentives are claimed by project owners based on the cost of a qualifying solar installation. Axium Solar’s role is to help businesses execute commercial solar projects that are built correctly, commissioned properly, and placed in service in a way that supports the documentation requirements the credit depends on.
For commercial solar projects across the Southwest, Axium provides EPC services including system design coordination, procurement management, construction, and commissioning. A project that is properly engineered, correctly installed, and fully commissioned according to code and utility requirements creates the foundation the tax credit claim is built on.
Axium Solar does not serve as a tax advisor, and businesses should engage qualified tax professionals to confirm eligibility and structure their credit claims. That said, Axium actively helps commercial solar clients understand how incentives may apply to their project, monitors relevant policy changes, and supports the documentation and compliance requirements that protect the full value of a commercial solar investment. What Axium provides on the construction side is execution that makes a solar energy system eligible to be placed in service and capable of performing as designed across its operational life.
If your organization is evaluating a commercial solar project and wants to understand the construction process, Axium Solar can help.
Contact Axium Solar to discuss your project scope and timeline.
Explore our Services, commercial solar incentives page, or FAQ to learn more about how Axium supports commercial solar projects across the Southwest.
