Solar Property & Sales-Tax Exemptions: the Quiet Incentives

When homeowners research solar incentives, they tend to focus on the most publicized options and overlook two quieter benefits that can still reduce the real cost of going solar: a property-tax exemption and a sales-tax exemption. A property-tax exemption means that the value a solar system adds to your home is excluded from your property assessment. Because your assessed value does not increase, your annual property-tax bill stays the same even though your home may be worth more on the market. A sales-tax exemption works differently — it applies at the point of purchase, meaning the solar equipment itself is not subject to state sales tax when you buy it, reducing your upfront installation cost directly.

These two exemptions are more common than many homeowners realize, but they are far from universal. Based on verified program data covering all 51 jurisdictions, 37 states currently offer some form of property-tax exemption for solar, and 23 offer a sales-tax exemption. That means a meaningful share of states provide neither, and the terms of those that do vary considerably — some cover only residential systems, others cap eligible system size or value, and a few apply only to specific equipment categories.

Another important distinction is how you claim these benefits. Some states apply exemptions automatically once a permit is filed or the installation is recorded, while others require the homeowner to submit a separate application or exemption form to a local assessor or tax authority. Missing that filing step can mean losing the benefit entirely, so it is worth checking whether any action is required on your part before or after installation.

Because program terms change and vary significantly by location, you should confirm current eligibility rules and filing requirements directly with your state energy office, your state or local tax assessor, your public utility commission, or the relevant utility tariff for any export or net-metering policies. This guide is general informational content only and is not tax or financial advice.

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Verified as of June 2026. How we verify this data. Informational only — not tax or legal advice.