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How to Claim the Solar Tax Credit (Form 5695) in 2026

By SolarCostData Data Desk · · Corrections log

If your solar (or battery) installation was completed in 2025, you claim the final year of the 30% Residential Clean Energy Credit on Form 5695, Part I, filed with your 2025 federal return — due April 15, 2026 for most filers. Per the IRS instructions, costs count when the original installation is completed, not when you paid — so a 2025-completed install qualifies even if you paid earlier, and a system finished in 2026 gets $0. Enter costs on lines 1–5b (solar on line 1, battery of 3 kWh+ on 5b), include installation labor and interconnection wiring, take 30%, and if the credit exceeds your tax, line 16 carries the unused portion to 2026. Keep receipts and manufacturer certifications — don’t attach them.
Which return
Tax year 2025, filed by April 15, 2026
Which form
Form 5695, Part I
Credit rate
30% (2022–2025 in-service)
Date test
Original installation completed
Completed in 2026?
$0 — credit ended
Credit > tax owed?
Line 16 carries unused part to 2026

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If your solar panels or home battery were installed in 2025, this filing season — the return due April 15, 2026 for most calendar-year filers, per the IRS — is when the 30% federal credit actually lands. It is the last one: 2025 was the final year of the Residential Clean Energy Credit. Everything below comes from one document, the official Instructions for Form 5695 (2025) (the form itself lives at About Form 5695 ), so you can check every claim at the source. Not tax advice — confirm with a tax professional.

Do you qualify for the solar tax credit?

Three checks, all drawn from the same instructions, settle “can I still qualify for the solar tax credit” for almost everyone:

  1. Your installation was completed on or before December 31, 2025. The §25D credit ended for expenditures after that date, and the completion date is the expenditure date (the rule is unpacked in the next section). Completed in 2026 → no credit, full stop — the honest 2026 numbers for that situation are in the cash-buyer math without the credit .
  2. You bought the system. Cash or loan both qualify — financing doesn’t change eligibility. A leased or PPA system does not: the third-party owner claims the commercial §48E credit instead — see lease vs. buy for how that trade works.
  3. You don’t need a big tax bill. The credit is nonrefundable, but an unused portion carries forward (details below) — so “how does the solar tax credit work if I don’t owe taxes” has a better answer than most people expect: you file anyway and the credit waits.

Not tax advice — confirm with a tax professional.

First, the date test: “installation completed,” not “paid”

The instructions state the rule plainly: “costs are treated as being paid when the original installation of the item is completed.” That single sentence — the §25D(e)(8)(A) rule — decides which tax year your project belongs to, and it cuts both ways:

For a newly constructed home, the instructions use a different trigger — costs count when your original use of the constructed home begins. Not tax advice — confirm with a tax professional.

The checklist: Form 5695, Part I, line by line

Per the instructions , Part I is where the Residential Clean Energy Credit is figured:

  1. Above line 1 — enter the complete address of the home where the property was installed. If you improved more than one home, list the highest-cost one here and attach a statement with the others.
  2. Line 1 — amounts paid for qualified solar electric property (your panels).
  3. Line 2 — solar water heating property. Line 3 — small wind. Line 4 — geothermal heat pump property.
  4. Lines 5a and 5b — battery storage technology. Line 5a is a yes/no checkbox: the battery must have a capacity of at least 3 kilowatt hours. Check “Yes” and enter the cost on 5b; if the answer is “No,” the instructions say you can’t include any battery cost.
  5. Include the labor. The instructions say to include on lines 1 through 4, 5b, and 8 any labor costs “properly allocable to the onsite preparation, assembly, or original installation of the property and for piping or wiring to interconnect such property to the home.” Installation labor and interconnection wiring are part of the creditable cost — don’t leave them out.
  6. The 30%. The instructions confirm the rate: “The credit rate for property placed in service in 2022 through 2025 is 30%,” and Part I describes the credit as 30% of your costs for the qualifying property types. The form’s arithmetic applies it for you. (Fuel cell property has its own capacity-based limits on lines 7a–10 — see the instructions if that’s you.)
  7. Line 14 — the tax liability limit, via the “Residential Clean Energy Credit Limit Worksheet,” which starts from your Form 1040 line 18 tax and subtracts certain other credits. This is what caps how much credit you can use this year.

One subtraction to know about: if a public utility subsidy for the installation wasn’t included in your gross income, the instructions require you to reduce your cost by that subsidy before figuring the credit — including subsidies a contractor received on your behalf. (A state tax credit, by contrast, is a separate program with its own return — several states still run one, per the state incentive comparison .) Not tax advice — confirm with a tax professional.

A worked example, with real 2026 numbers

Take a Massachusetts install — a state where our current model prices an 8 kW system at about $23,280 :

The same arithmetic works for any state; only the system price changes. The one number that never changes for a completed-in-2025 system is the rate: 30%.

Claiming it in TurboTax or other tax software

There is no special software path — every major tax package files Form 5695. Search the software’s credit section for “Residential Clean Energy Credit” or “Form 5695” (it often sits under “home energy credits”), enter the same cost figures described above, and the software fills the lines and the limit worksheet for you. Two things the software will not do: verify your completion date (it takes your word that the install finished in 2025), and dig out your cost records. Both are on you, which is why the documentation section below matters even for an e-filed return. Not tax advice — confirm with a tax professional.

The same form’s Part II: 2025 heat pumps and insulation

Form 5695 also carries Part II, the Energy Efficient Home Improvement Credit (§25C) — the one that covered qualifying heat pumps at up to $2,000, plus insulation, windows, and doors. Like §25D, it ended for property placed in service after December 31, 2025, so this filing season is also the last claim for a 2025 heat pump or weatherization project. If you did both projects in 2025, one Form 5695 handles both parts. Not tax advice — confirm with a tax professional.

If the credit is bigger than your 2025 tax: carryforward

The credit is nonrefundable — it can take your tax to zero but doesn’t pay out beyond that. What it is not is use-it-or-lose-it. The line 16 instructions say: “If you can’t use all of the credit because of the tax liability limit (that is, line 14 is less than line 13), you can carry the unused portion of the credit to 2026.” And notably: “File this form even if you can’t use any of your credit in 2025.” The same form is also where a carryforward from 2024 comes in, if you had one. So a modest 2025 tax bill doesn’t cost you the credit — it just spreads it into future filing years. Not tax advice — confirm with a tax professional.

Documentation: what to keep, what not to attach

The instructions are specific and a little counterintuitive here. For proving that equipment qualifies, “you can rely on the manufacturer’s certification, in writing, that a product is qualifying property for the credit” — and then: “Don’t attach the certification to your return. Keep it for your records.”

A sensible records folder for this claim:

Nothing above gets mailed in; it exists for the drawer, in case of questions later. Not tax advice — confirm with a tax professional.

The one warning worth repeating

If your system was completed in 2026, this checklist is not for you and the federal credit is $0 — the instructions’ termination language (“expenditures made after December 31, 2025”) combined with the completed-installation rule leaves no 2026 path for an owner-purchased system. Installers signed plenty of late-2025 contracts that slipped; the completion date, not the contract, is what counts. The full picture of what remains — leases, the charger credit, state programs — is in our 2026 energy tax credits guide , and the parallel story for vehicles (the EV purchase credits ended even earlier, on September 30, 2025) is in what’s still available on the EV side . Not tax advice — confirm with a tax professional.

Sources

This guide is general information summarizing the IRS Form 5695 (2025) instructions, not tax advice. Line numbers and worksheets follow the 2025 instructions; check the linked IRS pages for any later revisions, and confirm your own return with a licensed tax professional.

Frequently asked questions

My solar was installed in 2025 — when do I actually claim the credit?

On your 2025 federal income tax return, which most people file in early 2026 (the IRS due date for calendar-year filers is April 15, 2026). You attach Form 5695 and figure the Residential Clean Energy Credit in Part I. It is not a rebate or a check at install time — it only arrives through your tax return. Confirm your situation with a tax professional.

I paid my installer in 2024 but the installation finished in 2025. Which year is it?

Tax year 2025. The Form 5695 instructions state that costs are treated as being paid when the original installation of the item is completed. The completion date, not the payment date, picks the tax year. The same rule is why a system completed in 2026 gets nothing — the credit ended for expenditures made after December 31, 2025.

What if the 30% credit is more than I owe in tax for 2025?

You don’t lose the difference. Per the instructions for line 16, if you can’t use all of the credit because of the tax liability limit, you carry the unused portion to 2026 — and the IRS says to file Form 5695 even if you can’t use any of the credit in 2025. The credit is nonrefundable, though: it offsets tax, it never becomes a cash refund on its own.

What paperwork do I need to attach to my return?

Generally none beyond Form 5695 itself. The instructions say you can rely on the manufacturer’s written certification that a product qualifies — and specifically say not to attach it, but to keep it for your records. Keep contracts, receipts, and proof of the completion date with it, in case the IRS ever asks.

Sources: U.S. Energy Information Administration (EIA) electricity rates · DSIRE incentive records · public IRS/OBBBA guidance. Figures are modeled estimates, not quotes or tax advice. See our methodology.

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