How to Claim the Federal Solar Tax Credit: Step-by-Step Guide

The Federal Solar Investment Tax Credit (ITC) is the single biggest solar incentive available — worth 30% of your total system cost. Here's how to claim it.

Step 1: Determine Eligibility

You qualify for the ITC if:

• You own your solar system (not leased)
• The system is installed at your primary or secondary residence in the US
• You have sufficient federal income tax liability

The 30% credit is available through 2032. If your tax liability is less than the credit amount, you can roll the remaining credit forward to future tax years.

Step 2: Get Documentation from Your Installer

Your solar installer should provide:

• A completed Manufacturer's Certification Statement
• An itemized invoice showing the total system cost (equipment + installation)
• Proof of system activation/completion date

Keep these documents for your tax records.

Step 3: File IRS Form 5695

The ITC is claimed on IRS Form 5695 (Residential Energy Credits):

1. Line 1: Enter the total cost of your solar system
2. Line 6: Calculate 30% of the cost (this is your credit amount)
3. Complete the form to determine your allowed credit
4. Transfer the amount to Schedule 3 (Form 1040), Line 5

Step 4: Apply to Your Tax Liability

The credit reduces your tax liability dollar-for-dollar. For example:

• Your solar system cost: $21,000
• Your ITC: $6,300 (30%)
• Your tax liability before credit: $8,000
• Your tax liability after credit: $1,700

If your credit exceeds your liability, the remainder carries forward.

What Costs Are Included?

Covered by the ITC:

• Solar panels and inverters
• Battery storage (if charged by solar, at least 75%)
• Installation labor and permitting
• Mounting hardware and wiring
• Sales tax on eligible equipment

Not covered:

• Roof repairs (unless the roof work is necessary for solar)
• Tree removal (unless required for panel access)
• Old system removal (if replacing)

Common Mistakes to Avoid

1. Forgetting to carry forward excess credit — if your credit exceeds your tax liability, file Form 5695 anyway to document the carryforward.

2. Missing the installation date — the system must be "placed in service" (activated) during the tax year you're claiming it. Installation completion = placed in service.

3. Not claiming battery storage — batteries installed with or after your solar system qualify for the 30% credit if charged by solar.

4. Leasing instead of buying — leased systems don't qualify for the ITC. The leasing company claims it instead.

Stack With State Incentives

Many states offer additional credits that stack with the federal ITC:

• Arizona: 25% state tax credit (up to $1,000)
• New York: 25% state tax credit (up to $5,000)
• New Mexico: 10% state tax credit (up to $6,000)
• Iowa: 50% of the federal credit (up to $5,000)

Check our state solar guides for your state's specific incentives.

Use Our Calculators

• Solar Cost Calculator — estimate your net cost after the ITC
• Payback Period Calculator — see how the ITC affects your ROI

Always consult a tax professional for your specific situation. The ITC is the biggest reason solar makes financial sense for most homeowners — don't leave it on the table.