When does the solar tax credit end? For the federal credit, the answer is simple: it already ended. The 30% Residential Clean Energy Credit is not available for systems placed in service after December 31, 2025. That comes straight from IRS.gov. If a 2026 solar proposal still subtracts 30% for the federal credit, its math is out of date. This guide explains what changed, when it changed, and what is still available to Arizona homeowners.
Table of Contents
- The Short Answer: It Already Ended
- What the Federal Credit Used to Offer
- What Changed: The One Big Beautiful Bill Act
- Why “Placed in Service” Is the Date That Counts
- Does Anything Federal Remain?
- What’s Still Available in Arizona
- What a 30% Mistake Costs on a Typical System
- If Your Solar Loan Was Built Around the Credit
- Why This Matters for a Proposal You’re Reviewing
- How to Verify This Yourself
- What This Means for the Rest of This Series
- Key Takeaways
- Frequently Asked Questions
- Why You Can Trust This Article
- Resources
- Next Step
The Short Answer: It Already Ended
The question of when does the solar tax credit end has a clear, verifiable answer. The IRS Residential Clean Energy Credit page puts it plainly. The credit “is not available for any property placed in service after December 31, 2025.”
So if your system goes in during 2026 or later, there is no federal tax credit to claim. That is true whether you pay cash or finance with a loan. It holds no matter what an older blog post or a salesperson may still say.
Legal disclaimer: This article describes tax credits for general informational purposes only and is not tax or legal advice. Credit eligibility depends on your specific tax situation and when your system was placed in service. Consult a licensed tax professional or attorney before relying on any tax credit figure, and consult IRS.gov or azdor.gov for the current, official rules.
What the Federal Credit Used to Offer
The federal Residential Clean Energy Credit lives in Section 25D of the tax code. The Inflation Reduction Act of 2022 set it at 30% of system cost, with no dollar cap. That rate was scheduled to run through 2032. It would then step down to 26% in 2033 and 22% in 2034.
Most solar marketing was built on that schedule. Even the Consumer Financial Protection Bureau described it that way in its August 2024 report. A lot of older content still repeats it. That schedule stopped being accurate in mid-2025.
What Changed: The One Big Beautiful Bill Act
The One Big Beautiful Bill Act was signed into law on July 4, 2025. It ended the residential credit early, with no phase-down period. Instead of running to 2034, the credit stopped cold after December 31, 2025. That is why the answer to when does the solar tax credit end is now 2025, not 2034.
| Year | Original Schedule (2022 law) | Actual Outcome (2025 law) |
|---|---|---|
| 2022–2025 | 30% credit | 30% credit, if placed in service by 12/31/2025 |
| 2026–2032 | 30% credit | No federal credit |
| 2033 | 26% credit | No federal credit |
| 2034 | 22% credit | No federal credit |
That is up to nine years of credits removed by one law. For homeowners shopping today, the practical takeaway is short. The federal credit is not part of the 2026 math.
Why “Placed in Service” Is the Date That Counts
The cutoff depends on when a system is placed in service. It does not depend on when you signed a contract or paid a deposit. The IRS says you must claim the credit for the tax year the property is installed, not merely purchased.
That detail caught many homeowners in late 2025. Some signed in the fall, expecting the 30% credit. Then permits, inspections, or utility approvals pushed the finished install into 2026. Signing in 2025 did not preserve the credit if the system was not finished by year end.
If your installation straddled the deadline, the exact completion date matters a great deal. A licensed tax professional can tell you which date applies to your return.
Does Anything Federal Remain?
Yes, for systems finished in time. Was your system placed in service by December 31, 2025? Then you may still claim the 30% credit. You claim it on that year’s return using IRS Form 5695. The credit is nonrefundable, but any unused amount can generally carry forward to future tax years.
Leases and power purchase agreements (PPAs) work differently. The homeowner never claimed this credit on a leased or PPA system. The system owner, usually the leasing company, claims business tax credits under separate rules. Those rules affect how companies price agreements, but they never put a credit in your hands.
What’s Still Available in Arizona
Arizona’s state credit is untouched by the federal change. It is a separate law, passed by the state legislature rather than Congress. Under Arizona Revised Statutes § 43-1083, homeowners can still claim 25% of a solar device’s cost. The credit is capped at $1,000.
That $1,000 cap is cumulative for the same residence, across all years. If someone claimed a solar credit at your address before, what remains may be smaller. You claim it on Arizona Form 310 along with Form 301. You must own the system, so leased and PPA systems do not qualify.
It is real, but it is modest. See our full breakdown in The Arizona Solar Tax Credit, Explained.
Legal disclaimer: This article describes tax credits for general informational purposes only and is not tax or legal advice. Credit eligibility depends on your specific tax situation and when your system was placed in service. Consult a licensed tax professional or attorney before relying on any tax credit figure, and consult IRS.gov or azdor.gov for the current, official rules.
What a 30% Mistake Costs on a Typical System
How big is the gap? Our Arizona solar cost guide uses a typical 7.7 kW system at about $2.80 per watt. That works out to roughly $21,560 before incentives.
| Scenario | Credit Assumed | Credit Value | Net Cost Shown |
|---|---|---|---|
| Old proposal math (federal + Arizona) | 30% federal + $1,000 state | $7,468 | $14,092 |
| Actual 2026 math (Arizona only) | $1,000 state | $1,000 | $20,560 |
| Difference | $6,468 | +$6,468 |
That is a $6,468 swing on one typical system. Any payback period or savings estimate built on the old number will look far better than reality.
If Your Solar Loan Was Built Around the Credit
This matters most for financed systems. The CFPB’s Issue Spotlight on Solar Financing (August 7, 2024) found that many solar loans re-amortize around month 19. The monthly payment can rise sharply unless the homeowner prepays roughly 30% of the principal.
That prepayment was often timed to the federal tax credit. The homeowner was expected to use the credit refund to pay down the loan. With no credit for a 2026 installation, that money never arrives. If your loan has a prepayment feature like this, read the terms closely before month 18.
Why This Matters for a Proposal You’re Reviewing
Some salespeople still net out a 30% federal credit on 2026 installations. If yours does, ask how that credit applies. This is not a minor technicality. It is roughly 30% of the system price.
Arizona Revised Statutes § 44-1763 requires solar agreements to disclose available tax incentives and their eligibility conditions. An estimate built on an expired credit deserves a hard second look.
Incentive claims have drawn enforcement attention before. Arizona Attorney General Kris Mayes sued Vision Solar LLC, Solar Xchange LLC, and Mark Getts in July 2023. Getts owns Solar Xchange, which generated sales leads for Vision Solar. The complaint alleged false or unsubstantiated claims about energy savings and available tax rebates, among other things. Solar Xchange and Mark Getts settled. The case against Vision Solar was still active when the AG announced it.
Legal disclaimer: This article references Arizona law for general informational purposes only. It is not legal advice and should not be relied on as a substitute for consulting a licensed attorney about your specific situation. Laws change, and how a statute applies can depend on facts unique to your contract. For a review of your specific rights, consult an attorney or contact Titan Advocacy Group for a free contract review.
Use these checks on any 2026 proposal:
- Does it subtract a 30% federal credit? For a 2026 installation, that credit is gone.
- Does it show an Arizona credit above $1,000? The statute does not allow that.
- Is it a lease or PPA that lists a tax credit for you? Those credits never go to the homeowner.
- Does the loan expect a large prepayment around month 18? Ask where that money is supposed to come from.
If any answer worries you, ask for a corrected, written estimate before you sign.
How to Verify This Yourself
You don’t have to take our word on when does the solar tax credit end. The IRS Residential Clean Energy Credit page states the December 31, 2025 cutoff in plain language. Bookmark it and check it yourself before relying on any summary, including this one.
If your system was installed near the deadline, gather these documents for your tax preparer:
- Your signed contract and any change orders, with dates.
- Final inspection or permit sign-off from your city or county.
- Your utility’s permission-to-operate notice or interconnection approval.
- Invoices showing what you paid and when.
Tax rules can change again. The authoritative source is always the IRS, not a blog post.
What This Means for the Rest of This Series
Several articles in this series touch on tax credits. Cost breakdowns, savings estimates, and payback math all depend on which incentives apply.
Wherever this series mentions “current incentives,” it relies on this answer to when does the solar tax credit end. There is no federal credit for a 2026 or later installation. Arizona offers a modest credit of up to $1,000 per residence under § 43-1083.
Reading an older solar cost estimate from any source? If it predates mid-2025, treat its tax credit figure as unverified. Confirm it against IRS.gov first.
Key Takeaways
- When does the solar tax credit end? The federal credit already ended for systems placed in service after December 31, 2025.
- The One Big Beautiful Bill Act, signed July 4, 2025, ended it early with no phase-down.
- The placed-in-service date controls, not the date you signed or paid a deposit.
- Systems finished by December 31, 2025 may still claim 30% on Form 5695.
- Arizona’s state credit (25%, up to $1,000 per residence) is unaffected.
- A 2026 proposal that still assumes the 30% federal credit is using outdated math.
Frequently Asked Questions
The signing date does not decide it. What matters is when the system was placed in service. If installation was not complete by December 31, 2025, the federal credit does not apply.
Not for a new residential installation. The credit ended without a phase-down under the 2025 law, and there is no retroactive extension.
Homeowners with a lease or PPA never claimed this credit. The system owner claims business credits under separate rules, which can affect how companies price new agreements.
Possibly. A system placed in service by December 31, 2025 may qualify for the 30% credit. You claim it on that year’s return using IRS Form 5695. Unused credit can generally carry forward.
Yes. Arizona’s credit under ARS 43-1083 is separate from the federal credit. It equals 25% of the device’s cost, up to $1,000 total per residence.
Yes. If a proposal assumed the old federal credit, ask for a corrected estimate in writing. It should reflect 2026 incentives, and you should get it before signing anything.
Tax law has changed several times over the past decade, so it is possible. Any change would require new legislation. As of this writing, no federal residential solar credit exists for a 2026 installation.
Why You Can Trust This Article
This article is based on primary sources. Federal credit details come directly from IRS.gov, last reviewed by the IRS on July 4, 2026. Arizona credit details come from ARS § 43-1083 and the state’s Form 310 instructions. Loan findings come from the CFPB’s August 2024 report. Every figure can be checked against the sources linked below.
Titan Advocacy Group reviews residential solar contracts for Arizona homeowners. We regularly see proposals built on incentives that no longer apply. We are not a tax preparer and we are not a law firm. Confirm your situation with a licensed tax professional.
Resources
Sources cited in this article:
- IRS — Residential Clean Energy Credit
- IRS — About Form 5695, Residential Energy Credits
- Arizona Revised Statutes § 43-1083 — Credit for Solar Energy Devices
- Arizona Department of Revenue — Form 310, Credit for Solar Energy Devices
- Arizona Revised Statutes § 44-1763 — Distributed Energy Generation System Agreements
- CFPB — Issue Spotlight: Solar Financing (August 7, 2024)
- Arizona Attorney General — Lawsuit Against Vision Solar and Solar Xchange (July 2023)
Next Step
Did your solar contract’s savings estimate rely on a tax credit that no longer applies? Titan Advocacy Group offers a free contract review.
Request Your Free Contract Review →
Titan Advocacy Group is not a law firm. We provide administrative and consulting support and retain independent attorneys, at our cost, to represent customers who choose to move forward. No specific outcome can be promised.
