Solar Tax Savings Calculator

Estimate federal tax savings from ITC, adders, and Year 1 depreciation. For dealer + commercial + residential estimate use only.

Basics

Filing Status

AGI ($)

Adjusted Gross Income before solar incentives.

Total System Cost ($)

Used for ITC + adders + depreciation estimate.

Depreciation (Year 1)

Modeled as a deduction against taxable income.

Incentives

Commercial / Residential ITC (30%)

Modeled as a tax credit (reduces tax liability).

Domestic Content Adder (10%)

Energy Community Adder (10%)

Other Tax Credit ($) (optional)

If you want to include any additional fixed credit.

Arizona (optional)

Include AZ estimate using an effective rate

AZ rules vary. To keep this tool safe + flexible, you enter your effective AZ rate.

AZ Effective Tax Rate (%)

Used on taxable income estimate (old vs new).

Financing (optional)

Loan Amount ($)

If blank, we’ll assume it equals Total System Cost.

APR (%)

Loan Term (years)

Payments per year

12 = monthly. Used for Year 1 interest amortization.

We estimate Year 1 interest using an amortization schedule and treat it as an additional deduction (estimate only).

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Disclaimer: Estimates only. This is not tax advice. Credits may be limited by tax liability and may carry forward. Verify eligibility with a tax professional.