Home › Articles › Federal Solar Tax Credit

How the Federal Solar Tax Credit Works After the IRA Changes

Updated May 18, 2026

I installed solar panels on my house in late 2024. The 30% federal tax credit was a big part of what made the math work. My system cost $20,400 after local permits and installation labor, and I claimed $6,120 on my federal return that spring. It pushed my payback period from eleven years down to about seven and a half.

A lot has changed since then. The Inflation Reduction Act originally locked that 30% credit in place through 2032, but the One Big Beautiful Bill ended the residential credit early. If you are reading this in 2026 or later, the rules are different from what most guides still describe. I want to lay out what the credit was, how it worked when I claimed it, what changed, and what options remain.

What the IRA Originally Set Up

The Inflation Reduction Act, passed in August 2022, expanded the Residential Clean Energy Credit under Section 25D. Before the IRA, the credit had been stepping down and was scheduled to disappear for residential systems after 2023. The IRA reset it to 30% with this timeline:

The IRA also made standalone battery storage eligible for the first time. Previously, a battery only qualified if charged by solar panels on the same property. After the IRA, you could install a battery by itself and still get the credit.

What Qualified for the Credit

I was surprised by how much of the total project cost counted. Qualifying expenses included solar panels and racking hardware, the inverter, battery storage with at least 3 kWh of capacity, all installation labor, electrical panel upgrades required for the solar system, and permit fees.

What did not count: the cost of a new roof, even if you replaced it specifically to support panels. The roof itself is not a solar energy component.

There was no income limit and no cap on the credit amount. Whether your system cost $8,000 or $80,000, you got 30% back.

How I Actually Claimed It

Claiming the credit meant filling out IRS Form 5695 and attaching it to my federal return. You enter the total cost of your qualified solar property, work through a few lines of math, and the result flows onto your Form 1040 as a direct reduction of your tax liability.

That last part is what most people got wrong. This was a tax credit, not a rebate and not a deduction. A tax credit reduces the actual tax you owe, dollar for dollar. A deduction only reduces your taxable income. A rebate is a check regardless of your tax situation.

My system cost $20,400. Thirty percent of that was $6,120. But I could only use the credit to offset taxes I actually owed. If my federal tax liability had been $4,000, I would have zeroed out my bill and had $2,120 left over. Unused credit carried forward to future tax years with no expiration under Section 25D.

My liability was high enough to use the full credit in one year. If your income is lower, plan on spreading the credit across two or three tax years.

Common Mistakes That Cost People Money

The biggest was confusing the credit with a rebate. People assumed they would get a $6,000 check in the mail. If you owe $2,000 in federal taxes, you get $2,000 of value that year, not $6,000. The rest carries forward, but only helps in years when you have tax liability.

The second mistake was assuming the credit applied to leased systems. It did not. If you leased panels or signed a power purchase agreement, the leasing company owned the system and claimed the credit themselves.

Third, some people waited too long. The system had to be placed in service, meaning fully installed and generating electricity, before the deadline. Signing a contract or making a deposit was not enough.

What Changed With the One Big Beautiful Bill

On July 4, 2025, the One Big Beautiful Bill became law. It ended the Section 25D credit as of December 31, 2025. There was no phase-down. The credit went from 30% to zero overnight.

This caught people off guard. The IRA had set expectations that 30% would hold through 2032, and many homeowners were planning later installations.

If you installed before the end of 2025 and have unused credit, you can still carry it forward. Section 25D carryforwards survive indefinitely. But new residential installations in 2026 and beyond get zero federal tax credit if you own the system outright.

What Options Remain in 2026

Solar leases and power purchase agreements still benefit from the commercial Investment Tax Credit under Section 48E. The leasing company claims the credit and passes some savings to you through lower payments. If you go the lease or PPA route with a system placed in service by the end of 2027, or one that began construction before July 4, 2026, the economics can still work.

State incentives remain significant. New York offers a 25% state tax credit up to $5,000. Massachusetts runs the SMART program paying per kilowatt-hour produced. California has the Self-Generation Incentive Program for battery storage. Many states exempt solar from property tax increases.

Solar renewable energy certificates can also help. In states like New Jersey, Massachusetts, and Illinois, you earn certificates for every megawatt-hour produced and sell them to utilities. Over a system's lifetime, SRECs can be worth $5,000 to $30,000.

Running the Numbers Without the Federal Credit

My total installed cost was $20,400. The federal credit brought that to $14,280. Annual electricity savings of about $1,800 gave me a payback of roughly 7.9 years, with savings continuing for the remaining 17 or so years of the panel warranty.

Without the credit, that system today would cost around $19,000. At $1,800 per year in savings, payback stretches to about 10.5 years. Still profitable, but harder to justify for someone who might move in seven or eight years.

State credits close some of that gap. In New York, the $5,000 state credit brings effective cost to $14,000 and payback to 7.8 years. In states with no incentives, solar still works if rates are high enough, but the margin is thinner.

Whether Solar Still Makes Sense

It depends on your electricity rate, your state's incentives, and how long you plan to stay.

If you pay more than 15 cents per kilowatt-hour and have net metering, solar is still a good investment. Panel prices have dropped enough that the economics work in most of the country. Without the federal credit, you just need to run the numbers for your specific situation.

Strong state programs in New York, Massachusetts, or New Jersey can make up for most of what the federal credit provided. Minimal incentives plus low rates means the payback only makes sense if you are staying 12 or more years.

I would not wait for the federal credit to come back. Congress has extended it before, but planning around a hypothetical law is not a strategy. Run the numbers with what exists today.

Even knowing what I know now, I would have installed without the credit. It would have taken longer to break even, but generating your own electricity for 25 years at a fixed cost still beats paying a utility that raises rates every year.