The Federal Solar Tax Credit in 2026: What Changed and What's Left

If you’ve been researching solar and keep reading about a “30% federal tax credit,” you need an update. That credit no longer exists for most homeowners. The One Big Beautiful Bill Act, signed into law on July 4, 2025, eliminated the residential solar tax credit — officially the 25D Residential Clean Energy Credit — for systems installed after December 31, 2025.

This is the biggest shift in US solar economics in over a decade. Here’s exactly what happened, who it affects, and what alternatives remain for homeowners going solar in 2026.

What Was the 30% Federal Solar Tax Credit?

The Residential Clean Energy Credit (Section 25D of the tax code) allowed homeowners who purchased solar systems with cash or a loan to deduct 30% of the total installed cost directly from their federal income taxes. On a $25,000 system, that was $7,500 back — a credit, not a deduction, meaning it came off actual taxes owed dollar-for-dollar.

The Inflation Reduction Act of 2022 had extended this credit at 30% all the way through 2032, with planned step-downs to 26% in 2033 and 22% in 2034. Many installers and websites were still quoting those numbers well into 2025.

Those numbers are now obsolete. The One Big Beautiful Bill overrode the IRA timeline and terminated the residential 25D credit as of December 31, 2025.

Who Is Still Covered (Systems Already Installed)

Systems placed in service on or before December 31, 2025 still qualify for the full 30% credit. If you had your system operational and connected by that date, you can claim the credit on your 2025 tax return. The law has no retroactive component — it does not strip the credit from systems already installed.

If you already claimed the credit in a prior year: you keep it. This change only affects new installations going forward.

Who Gets $0 Federal Credit in 2026

If you buy solar with cash or a loan in 2026, you receive no federal tax credit. The 25D provision simply no longer applies. This affects the majority of residential solar purchases — roughly 60–70% of the market buys or finances outright.

The impact on payback math is significant and honest sites should tell you this clearly. A system that would have cost $25,000 and paid back in 8 years under the old rules now costs the full $25,000 with no federal offset. Payback periods extend meaningfully — by 3 to 5 years depending on your electricity rate and sun exposure.

The Lease/PPA Exception

One important nuance: the federal commercial clean energy credit (Section 48E) was not fully eliminated — it remains available for qualifying projects through 2027. Solar leasing companies and power purchase agreement (PPA) providers are business entities and some can still claim 48E credits on systems they own and lease to homeowners.

This means:

• If you lease solar or sign a PPA, the leasing company may still benefit from a federal credit, and may pass some savings to you through lower monthly payments.
• You personally cannot claim any credit — you don’t own the system.
• Whether you actually benefit depends entirely on the terms offered. Not all companies pass savings through.

This partially reverses the old conventional wisdom. Historically, buying was clearly better than leasing specifically because the buyer captured the 30% credit. In 2026, that calculus is more complicated — though leases still come with significant drawbacks: no ownership, contract lock-ins of 20–25 years, complications when selling your home, and payment escalators. Use our lease vs. buy calculator to model the 25-year difference for your situation before signing anything.

What Solar Incentives Actually Exist in 2026

The end of the federal residential credit does not mean all incentives are gone. Meaningful programs remain at the state and utility level.

State Tax Credits

Several states offer their own solar income tax credits independent of the federal program:

• New York: 25% state credit up to $5,000
• Massachusetts: 15% state credit up to $1,000
• Hawaii: 35% state credit up to $5,000
• South Carolina: 25% credit with no cap
• Montana, Maryland: 15–30% credits

These state credits are now more valuable relative to total cost because the federal offset no longer exists to absorb part of the savings.

Utility and State Rebates

Many utilities and state programs offer upfront rebates — cash back per watt installed or flat amounts. These are especially common in states with aggressive renewable portfolio standards. Check with your utility and your state’s energy office for current programs; they change frequently. DSIRE (dsireusa.org) maintains the most current database.

Net Metering

Net metering — the policy that lets you sell excess solar electricity back to the grid at retail rates — is still active in most states. Rules vary widely: California’s NEM 3.0 significantly reduced export rates, while many other states still offer favorable terms. Net metering doesn’t put cash in your pocket upfront, but it extends the value of your production and speeds up effective payback.

Property Tax and Sales Tax Exemptions

Most states exempt solar installations from property tax increases (your home’s assessed value doesn’t rise just because you added panels) and from sales tax on solar equipment. These passive benefits lower your effective cost without requiring a tax filing. See your state’s page for the specific exemptions that apply where you live.

How the Math Changes in 2026

For a home with a $200/month electricity bill in a state with average sun and rates:

• 2025 calculation (with 30% credit): System cost ~$21,000, net after credit ~$14,700, payback ~8 years
• 2026 calculation (no federal credit): System cost ~$21,000, full price, payback ~11–14 years

That difference is real and significant. Solar still makes sense in many situations, but honest analysis requires using the actual 2026 numbers. High-electricity-rate states — California, Massachusetts, Hawaii, Connecticut, New York — still have compelling economics because large annual savings compensate for longer payback horizons. Low-rate states with weak sun are now genuinely marginal.

Our solar savings calculator reflects the updated 2026 reality with no federal credit assumed.

Should You Still Go Solar in 2026?

Solar remains worth evaluating if:

1. Your electricity rate is high (above ~$0.18/kWh). High rates mean larger annual savings.
2. You plan to stay 12+ years. Longer payback periods require more time to break even.
3. Your state has meaningful incentives — New York, Hawaii, Massachusetts, South Carolina homeowners still have real programs.
4. Your roof is newer and well-oriented. Adding panels to a roof that needs replacing in 5 years or one with heavy shading makes the math worse.
5. You value energy resilience. If frequent outages or storm risk are concerns, solar plus battery storage has value beyond the financial calculation alone.

The honest bottom line: solar is harder to justify in 2026 than in 2025. The federal credit was the single biggest factor making payback work for marginal situations. Without it, the case for solar is now narrower — but it’s not gone for homeowners with the right combination of high rates, good sun, strong state incentives, and long-term plans.

What To Do Before You Sign Anything

1. Verify your state’s current incentives at DSIRE (dsireusa.org) — the authoritative source.
2. Get 3+ quotes from local licensed installers. Ask each one to explain exactly which incentives apply to your situation in 2026.
3. Run your numbers with our solar savings calculator — it reflects 2026 reality.
4. If considering a lease, use our lease vs. buy calculator to compare 25-year outcomes.
5. Don’t rush. There’s no more “act now before the credit expires” deadline — the credit is already gone. Take the time to make this decision correctly.

Any installer or website still quoting 6–8 year payback periods based on the 30% federal credit is giving you outdated information. Get accurate numbers and make your decision based on 2026 realities.