The federal government offers a non-refundable 30% credit off your system’s purchased cost. For this tax season, this credit can be recovered for systems placed in service before the end of 2016. This credit is covered under section 25D of the IRS Code. The relevant sections are 25D(d)(2), 25D(e)(2), and 25D(d)8. The Federal Tax Credit for homeowners is scheduled to lower to 26% in 2020 and 22% in 2021. It is set to expire at the end of 2023.
This credit reduces the amount of tax you will pay in the year you take the credit. Assume you paid $10,000 for a solar system and your total tax bill that year was $6,500. You would get a $3,000 tax credit. So, your final tax bill would be $3,500. Assuming that you paid taxes through withholding from your paycheck or made quarterly estimated tax payments, you would probably get money back in a refund.
Under the same scenario, let’s assume your tax bill was only $2,000. You can only take the tax credit up to zeroing out your tax liability for the year. But, you would be able to roll the remaining credit over to account for your taxes the next year, so you aren’t losing out if you can’t take the entire credit in one year.
Solar customers are able to take the tax credit starting the year their system goes into service. So, if your system was installed in December, but it wasn’t approved by the utility company to be switched on until January, the conservative approach would be to wait until the next year to claim the tax credit. Interpretations vary on the exact meaning of “in service” however. An alternate interpretation would be when the system is fully installed and tested by the installer and subsequently inspected and approved for use by your local jurisdiction.
A key solar tax question is does the credit apply to structural improvements you need to make in order to complete the installation. For example, let’s say you had to make improvements to your roof as part of your installation. Is that covered?
Qualified solar electric property costs are costs for property that uses solar energy to generate electricity for use in your home located in the United States. No costs relating to a solar panel or other property installed as a roof (or portion thereof) will fail to qualify solely because the property constitutes a structural component of the structure on which it is installed.
This would seem to indicate that you may be able to include the costs of roofing into the tax credit as long as it is a structural component of the installation. A practical example of this would be if a home needed to have its roof re-enforced (the rafters or trusses for example) to support an installation that may be covered under the tax credit whereas replacement of roofing shingles, since they are not structural in nature, would not be covered.
The 30% tax credit only applies if you own your system. If you lease your system, the company you lease from is eligible to take the tax credit. If you own your system (you pay cash or finance your purchase through a loan), you will also own any Solar Renewable Energy Credits (SRECs) generated by the system. The money you earn from selling these SRECs is taxable. Think of this like capital gains taxes you would have to pay upon the sale of a stock.