Long Island Solar Installation Pros — Calculator
NY Solar Tax Credit Estimator
See how much the New York State 25% residential solar credit (capped at $5,000) is worth on your specific Long Island project. Federal sunset-aware — no outdated 30% credit baked in.
How this calculator works
The estimator runs your project cost through the New York State Residential Solar Energy System Equipment Credit formula — 25% of qualified expenditures, capped at $5,000 — and models year-one application against your estimated NY State tax liability plus the five-year carryforward. The federal residential credit is explicitly NOT added: the IRS Residential Clean Energy Credit applied to qualified property installed from 2022 through December 31, 2025 and is not available for property placed in service after that date.
For worked examples (Smithtown cash, Long Beach with battery, Hauppauge carryforward, Freeport municipal-utility), see our walkthrough article.
Inputs
Equipment + labor + soft costs. From your written installer quote. Battery storage is included when it qualifies under NY rules.
Approximate. From last year's NY State return, or a 4–7% estimate of your NY taxable income. We use this only to model year-one vs carryforward — not tax advice.
Federal credit note (locked)
The IRS Residential Clean Energy Credit applied to qualified property installed from 2022 through December 31, 2025 and is not available for property placed in service after that date. This calculator does NOT add a 30% federal credit to 2026 estimates. Any active federal program at the time of your install is verified during the planning consultation.
New York State 25% credit estimate
NY State credit applied
$5,000
Your 25% calculation ($6,500) exceeds the $5,000 cap by $1,500. The credit is statutorily capped at $5,000.
Year-one credit applied
$4,500
Limited to your NY State tax liability
Carryforward (next years)
$500
Carries forward up to 5 tax years
How this works
The New York State Residential Solar Energy System Equipment Credit (per the NY State Department of Taxation and Finance) is 25% of qualified solar energy system equipment expenditures, capped at $5,000. The credit is non-refundable but unused amounts carry forward up to five tax years.
Not tax advice
This is a planning estimator only. Your specific situation depends on tax liability, filing status, and other factors. Confirm details with a qualified tax professional and the New York State Department of Taxation and Finance.
Want the credit math walked through against your actual installer quote?
We'll read the proposal line by line — system cost, qualified expenditures, financing fine print, and how the credit interacts with the loan reamortization clause if you have a $0-down product.
Request a Long Island assessmentCommon questions
What is the New York State residential solar tax credit?
New York State offers a residential Solar Energy System Equipment Credit equal to 25% of qualified solar energy system equipment expenditures and limited to $5,000. It applies to your New York State personal income tax (per the NY State Department of Taxation and Finance).
Is the federal solar tax credit included in this estimate?
No. The IRS Residential Clean Energy Credit applied to qualified clean energy property installed from 2022 through December 31, 2025 and is not available for property placed in service after that date. We do not bake a 30% federal credit into 2026 estimates. Any active federal program at the time of your install is verified during the planning consultation.
What happens if my NY State tax liability is less than the credit?
The New York credit is non-refundable — it can reduce your New York State income tax to zero but will not generate a refund beyond that. Unused credit carries forward up to five tax years, which gives most homeowners enough time to fully use the credit.
Does battery storage qualify for the New York credit?
Battery storage may qualify when installed alongside solar and when it meets the New York State eligibility rules at the time of installation. The qualified expenditure determination is verified by your tax professional and the relevant program administrator.
Is this tax advice?
No. This is a planning estimator only. Your specific situation depends on tax liability, filing status, and other factors. Confirm details with a qualified tax professional and the New York State Department of Taxation and Finance.
Want the credit math walked through against your actual installer quote?
We'll read the proposal line by line and verify the NY credit math, federal sunset implications, and any loan reamortization clauses.