Federal Solar Tax Credit (30%) Fully Explained — Form 5695 Walkthrough 2026

Updated May 2026 · By Riley Kim · 11 min read

Quick answer: The federal Residential Clean Energy Credit gives you a 30% dollar-for-dollar tax credit on the cost of installing residential solar (panels, inverters, labor, permits, and battery storage ≥3 kWh). For a $25,000 install, that's a $7,500 federal tax credit. You claim it via IRS Form 5695 in the tax year your system is turned on. The 30% rate runs through 2032. If your tax liability is less than the credit, the unused portion carries forward indefinitely until used. Use our free tax credit calculator to model your exact credit + state stacking + carryforward.

The federal solar tax credit is the single biggest financial incentive for going solar. It's worth roughly 30% of your total install cost — usually $6,000-$15,000 in real dollars off your federal tax bill. But there's significant confusion about how it actually works, what qualifies, and what to do if your tax bill is smaller than the credit.

This guide walks through everything you need to know to claim the credit correctly — including what most installer reps won't tell you about edge cases.

What is the federal solar tax credit exactly?

Officially called the Residential Clean Energy Credit (RCEC), this is a federal income tax credit equal to 30% of qualified solar installation expenses. It's:

A tax credit, not a deduction. A $9,000 credit reduces your federal tax bill by $9,000 — not just your taxable income. Way more valuable than a deduction.
Non-refundable, but carries forward. If your tax bill is smaller than the credit, you get the full benefit eventually — just spread across multiple tax years.
Available to homeowners only. Renters and people leasing solar systems can't claim it (the system owner does).
Stackable with state credits and rebates. States like NY, SC, MA, NM, HI, and IA offer additional credits on top.

The IRA schedule: when does the credit phase down?

The Inflation Reduction Act (Aug 2022) extended and raised the credit from 26% to 30%. As of 2026 the scheduled rates are:

Tax year	Credit %
2022-2032	30%
2033	26%
2034	22%
2035+	Expires (unless extended again)

The credit applies to the year your system is placed in service (turned on and connected), not the year you signed the contract. If you sign in December 2032 but the system gets PTO (Permission to Operate) in January 2033, you're locked into the 26% rate.

See your exact tax credit + carryforward schedule

Our calculator computes your federal credit, stacks state credits, and shows year-by-year carryforward if your tax liability is smaller than the credit.

Open Tax Credit Calculator →

What expenses qualify for the credit?

The 30% applies to your total installed cost, which includes:

✓ Qualifying expenses

Solar PV panels (modules)
Inverters (string, microinverter, hybrid)
Racking and mounting hardware
Wiring, conduit, disconnects, electrical panels
Permits and inspection fees
Installation labor
Sales tax (in most jurisdictions)
Battery storage with ≥3 kWh capacity (added by IRA, applies whether installed with solar or standalone)
Roof structural reinforcements required specifically for solar

✗ Does NOT qualify

Full roof replacement (unless required structurally for solar)
Tree trimming or removal to clear shading
Generators (gas, propane, diesel)
EV chargers (separate $7,500 federal EV credit applies to the vehicle, not the charger)
Electrical service panel upgrades (gray area — claim only if explicitly required by your solar install per installer documentation)
Monitoring services or extended warranties
Financing fees, dealer fees in solar loans, or interest

⚠ Important — the dealer fee trap: If you finance solar with a "low APR" loan that includes a dealer fee (typically 15-30% rolled into the loan principal), the federal credit only applies to the cash-equivalent system price, NOT the inflated loan amount. A "low APR" loan with $7,500 in hidden dealer fees on a $25,000 system means you lose 30% × $7,500 = $2,250 in federal credit value. Always confirm with your installer what the cash price would be before financing.

Step-by-step: how to claim the credit on Form 5695

Step 1: Confirm your installation tax year

The credit applies to the tax year your system is "placed in service" — meaning utility-approved and producing power, not just installed on your roof. The relevant date is your utility's PTO (Permission to Operate) approval, usually shown in correspondence from your utility.

Step 2: Gather documentation

Installer invoices showing total cost breakdown (panels, inverter, labor, permits, etc.)
Manufacturer's Certification Statement — your installer should provide this; it certifies the equipment qualifies for the credit
Permit and inspection records
PTO letter from your utility (proves date of service)
Proof of payment — cancelled checks, credit card statements, loan documents

Keep these for at least 7 years in case of IRS audit.

Step 3: Calculate your qualified expenses

Add up all qualified costs from your invoices. This is your total installed cost for tax credit purposes. Example breakdown for a 7 kW system:

Solar panels: $9,800
Inverter: $2,500
Racking, wiring, electrical: $1,800
Permits + inspection: $800
Labor: $7,500
Sales tax: $1,600
Total qualified expenses: $24,000

Step 4: Complete IRS Form 5695, Part I

Form 5695 has two parts. Part I is the Residential Clean Energy Credit (solar, wind, geothermal, biomass, battery storage). Part II is for energy-efficiency upgrades (windows, insulation, etc.) — generally separate.

For Part I:

Line 1: Qualified solar electric property costs ($24,000 from our example)
Line 6a: Add all qualifying lines
Line 6b: Multiply line 6a by 30% ($7,200 in our example)
Line 12: Credit carryforward from prior year (if any)
Line 13: Total credit available
Line 14: Enter your tax liability from Form 1040 (or use the worksheet on the form instructions)
Line 15: Credit you can claim this year (lesser of 13 or 14)
Line 16: Carryforward to next year (line 13 minus line 15)

Step 5: Attach to Form 1040 and file

The credit amount from Form 5695 line 15 flows to Schedule 3 (Additional Credits and Payments) line 5a, then to Form 1040 line 20. If you use TurboTax, H&R Block, FreeTaxUSA, or any major tax software, just answer the "Did you install solar this year?" question and the software handles all the form filling for you.

What if your tax liability is less than the credit?

This is the #1 source of confusion about the solar tax credit. Walk through this example:

Your install cost: $30,000
Federal credit (30%): $9,000
Your federal tax liability this year: $5,000

You claim the lesser amount this year ($5,000), reducing your tax bill to $0. The remaining $4,000 carries forward to next year. Next year, if your liability is again $5,000, you claim the remaining $4,000 against it — and you're done. Two-year claim, full credit used.

The credit can carry forward indefinitely (per current IRS guidance) — there's no expiration date for the carryforward. If your liability is small, just plan for the credit to take 2-4 tax years to fully exhaust.

Stacking state credits + utility rebates

A handful of states offer additional income tax credits that stack on top of the federal 30%. As of 2026:

State	Credit Rate	Max Credit
Hawaii	35%	$5,000
New York	25%	$5,000
South Carolina	25%	$3,500
Massachusetts	15%	$1,000
New Mexico	10%	$6,000
Iowa	15%	$5,000

Many other states offer property tax exemptions (the added home value from solar doesn't increase your property tax) and sales tax exemptions. Check DSIRE for your specific state.

FAQ

How much is the federal solar tax credit in 2026?

30% of your total installed cost, including labor and permits. The 30% rate runs through 2032; it drops to 26% in 2033 and 22% in 2034 before expiring.

What if my credit is larger than my tax bill?

The credit carries forward indefinitely. If you owe $5,000 and qualify for $9,000 in credit, you'll claim $5,000 this year and the remaining $4,000 against next year's taxes. No expiration on the carryforward.

Does the solar credit cover batteries?

Yes — battery storage with 3 kWh or greater capacity qualifies for the same 30% credit, even if installed standalone without solar.

Do I have to itemize to claim the solar credit?

No. The credit is a tax credit (not a deduction), claimed via Form 5695 regardless of whether you take the standard deduction or itemize.

Can I claim the credit if I lease the panels or sign a PPA?

No. The credit goes to the system owner. Leasing companies or PPA providers take the credit and (may or may not) pass through savings to you in the form of lower monthly payments.

What if I add solar to a rental property?

The Residential Clean Energy Credit is for your primary or secondary personal residence. For rental property solar, you'd use a different credit — the Business Investment Tax Credit — which has different rules and can be combined with depreciation benefits.

Can I claim the credit on a vacation home or second home?

Yes. The Residential Clean Energy Credit applies to your primary residence AND secondary residences you use personally. You cannot claim it for rental properties or homes you don't personally use.

Calculate your exact tax credit

Enter your system size, battery, and state. We'll compute federal credit, state credit stacking, and show the carryforward schedule if your tax liability is smaller than the credit.

Open Tax Credit Calculator →

Primary sources

Disclaimer: This article is general information, not tax advice. Tax situations vary; consult a CPA or tax professional for your specific case, especially if you have unusual income, financing arrangements, or are claiming the credit on a property other than your primary residence.