Solar Tax Credit 2026: Rules, Who Qualifies & Alternatives
The 30% federal credit is gone for 2026 purchases — here is what the law actually says, who can still claim, the lease/PPA workaround, the state incentives that survive, and honest post-ITC payback math.
The short answer
The 30% federal residential solar tax credit is over for homeowner-owned systems. Under the One Big Beautiful Bill Act (Public Law 119-21), signed July 4, 2025, §25D "will not be allowed for any expenditures made after December 31, 2025" — and the IRS treats an expenditure as made when the original installation is completed, not when you sign or pay. Systems finished in 2025 still qualify for the full 30% (2025 return; unused credit carries forward). A system installed in 2026 gets $0 federal credit if you buy it outright. The only remaining route to federal-credit economics is a solar lease or PPA, where the owner may claim the §48E commercial credit and pass value through pricing. State and local incentives are untouched. Bottom line: plan for an indicative ~14-year payback — the worked math is below.
What the law actually says: §25D, explained
For years, §25D gave US homeowners a 30% credit on rooftop solar, battery storage, and other clean-energy systems, with no dollar cap — scheduled through 2032 with a gradual step-down. The One Big Beautiful Bill Act deleted the schedule: no phase-down — 30% on December 31, 2025, 0% on January 1, 2026. What matters is the trigger: under §25D(e)(8), an expenditure is treated as made when the original installation is completed — the IRS confirmed contract and payment dates do not count. Signed and paid in November 2025 but finished in January 2026 means no credit. One more casualty: the §25C home improvement credit (heat pumps, insulation, windows, doors) is also unavailable for property placed in service after December 31, 2025. Sources: the IRS residential clean energy credit page and the IRS FAQ on the OBBB modifications.
Do I still qualify? The grandfather checklist
Every box must be ticked:
- Installation completed on or before December 31, 2025 — the single controlling fact. The crew's finish date matters more than the utility's permission-to-operate date.
- You own the system — cash or loan purchase. Leases and PPAs were never eligible for §25D.
- Installed at a US residence you use — primary or secondary, not rental-only.
| Your situation | Federal credit on a purchased system |
|---|---|
| Installation completed on or before Dec 31, 2025 | 30% of qualified cost — claim on the 2025 return (Form 5695) |
| Contract signed or deposit paid in 2025, installation finished in 2026 | $0 — completion date controls |
| Installed in 2026 or later | $0 |
| Unused §25D credit from a 2025 or earlier system | Carries forward to later tax years |
| Leased system or PPA in 2026 | $0 to you — the owner may claim §48E |
Two edge cases. Installations straddling 2025/2026 fall outside the credit — get the completion date from your installer in writing. New construction is the one narrow exception: §25D(e)(8) treats the expenditure as made when the taxpayer begins using a building under construction — confirm with the IRS FAQ or a tax professional first. Keep your records — contract, invoices, proof of completion — to substantiate a 2025 claim. (This is information, not tax advice — for a five-figure credit decision, a CPA is money well spent.)
The lease/PPA route: the only road to federal-credit economics
With §25D gone for buyers, the only channel still connected to a federal credit is third-party ownership: the new law kept no ban on rented or leased solar systems (per SEIA), so a company can own the panels on your roof and claim the §48E commercial clean electricity credit — generally requiring construction started by July 4, 2026, or placed in service by December 31, 2027. The owner claims roughly 30% against its own tax bill and prices your lease or PPA lower — you never file a credit form; the value arrives as cheaper monthly payments. A 2026 lease or PPA can still carry federal subsidy baked into the rate; a 2026 cash purchase carries none. Ask directly: "How much of the §48E value is in my quoted rate?" An evasive answer is a red flag.
The tradeoffs: no equity, no incentives you can claim; payments often escalate annually (reportedly 2–3% per year) — check the 25-year total; selling requires the buyer to assume the agreement, which can complicate a sale; the owner picks the equipment. Leases and PPAs suit households wanting $0-down solar with predictable payments — not anyone selling soon. Compare the total lifetime lease/PPA cost against the purchase price: the pass-through only helps if pricing reflects it.
What is still on the table: state and local incentives
The federal change touches only federal credits. State and local programs are untouched, and in 2026 they carry more weight than ever. They vary enormously by location — treat the table as a map of program types, not dollar amounts, and check the DSIRE database for your address:
| Program type | What it does | Status in 2026 |
|---|---|---|
| Net metering / net billing | Credits you for surplus kWh exported to the grid | Still active; rules vary by state and utility |
| State or utility rebates | Upfront payment per kW or per project | Still active in some states; budgets vary by round |
| Property-tax exemption | Added home value from solar excluded from assessment | Still active in many states |
| Sales-tax exemption | No sales tax on solar equipment | Still active in many states |
| Performance payments / SRECs | Paid per kWh your system generates | Still active in some markets; values fluctuate |
| Low-interest solar loans | State-backed financing below market rates | Still active in some states |
Two deserve emphasis. Net metering is now the biggest incentive variable: the gap between full retail crediting and a low wholesale export rate can swing payback by years. And property-tax exemptions keep the array's added home value off your tax bill every year you own the system. Neither needs a federal credit to exist.
Post-ITC payback math: a worked example
Without the credit, the arithmetic is simple. An indicative 2026 US system — 8 kW at $3.00/W = $24,000 gross (indicative; prices vary by state, roof, and installer) — produces roughly 10,400 kWh/year at 1,300 kWh per kW. At an indicative $0.165/kWh (~$1,715 in first-year savings), payback is $24,000 ÷ $1,715 ≈ 14 years — consistent with our US solar calculator's defaults. Under the old rules the same system netted $16,800 after the 30% credit: ~9.8 years. The credit was worth about four years of payback.
But 14 years is a national midpoint. Your electricity rate dominates — high-rate states pay back years sooner. Your net metering terms decide what exported kWh are worth. Your installed price is the lever you control: quotes for identical systems routinely differ 20–30%. Run your rate, production, and quotes through the solar cost calculator and solar ROI calculator and let the math decide.
Making solar pencil in 2026
The credit is gone; solar must now earn its keep on bill savings alone. Get three to five quotes — installer margin is your biggest lever, and quotes vary by thousands for identical equipment. Right-size the system to actual consumption; every unneeded kilowatt is ~$3,000 unsubsidized. Check DSIRE before you sign — limited-budget rebates vanish fast. Model batteries on their merits: in time-of-use markets they can help; elsewhere they are mostly backup. Treat any "federal credit still available" pitch as a red flag. If ownership math fails at your rate and roof, price a lease or PPA honestly against the purchase quote: the §48E pass-through may make third-party ownership the better deal. See our solar installation guide.
Solar tax credit 2026 FAQ
Straight answers, no fluff.
Is the 30% federal solar tax credit available in 2026?
No. For homeowner-owned systems, the 30% residential clean energy credit (§25D) is not available for any expenditure made after December 31, 2025. Per IRS guidance, an expenditure is treated as made when the original installation is completed — so a system installed and completed in 2026 gets no federal credit, even if you signed the contract or paid a deposit in 2025.
What counts as an "expenditure made" — does my contract or payment date count?
No. Under §25D(e)(8), an expenditure is treated as made when the original installation of the equipment is completed. The contract signing date and the payment date do not control. If your installer finished the job on or before December 31, 2025, the expenditure falls inside the credit window; if installation completed in 2026, it does not.
My system was installed in 2025 but I haven't filed my 2025 taxes yet. Can I still claim the credit?
Yes. Systems installed and completed in 2025 remain eligible for the full 30% credit — you claim it on your 2025 return using IRS Form 5695, which you file in the 2026 tax season. If your credit exceeds your 2025 tax liability, the unused portion carries forward to future tax years.
Can a solar lease or PPA still give me federal credit value in 2026?
Indirectly, yes. You cannot claim a credit yourself on a system you do not own, but the third-party owner of your leased system or PPA may claim the §48E commercial clean electricity credit — subject to strict construction-start and placed-in-service deadlines — and pass some of that value to you through lower monthly payments. Ask any lease or PPA provider exactly how much of the credit value is reflected in your quoted rate.
What solar incentives still exist in 2026?
State and local programs: net metering variations, state or utility rebates, property-tax exemptions, sales-tax exemptions, and performance-based credits such as SRECs all still exist in various states in 2026, but they differ enormously by location — check the DSIRE database at dsireusa.org for what is available at your address. And if you lease rather than buy, the lessor's §48E claim may show up as lower payments.
What is the payback period for solar without the federal tax credit?
Indicatively, around 14 years for a typical US residential system in 2026 without the credit, versus roughly 9-10 years when the 30% credit applied. The real number depends heavily on your electricity rate, installed cost, and available state incentives — model your own numbers in a solar cost or ROI calculator rather than relying on national averages.
Run your own numbers
The national average is not your number. Model your system cost, your electricity rate, and your payback — with 2026's post-ITC assumptions — in the free calculators.