New windows are tax deductible only if they are part of a home energy efficiency improvement, and only if you itemize deductions on your federal return

The Residential Energy Credits program lets you deduct 30 percent of the cost of ENERGY STAR-certified windows installed in your primary residence, up to a lifetime limit of $3,200 total across all energy improvements. This is a federal tax credit, not a deduction — it reduces your tax bill dollar-for-dollar rather than reducing your taxable income. The credit applies to windows installed in 2023 and later tax years through 2032.

You cannot deduct windows as a standard home repair or maintenance expense. The IRS treats routine replacement windows as capital improvements to your home, which means they increase your home's basis (the value used to calculate capital gains tax if you sell). You can only recover that cost when you sell the house, and only if your total capital gains exceed your basis increase.

The energy credit is the only current federal tax benefit for new windows. Some states offer additional credits or rebates — check your state's energy office website to see what is available where you live.

Key Takeaways

  • The federal Residential Energy Credits program gives you a 30 percent tax credit on ENERGY STAR windows, capped at $3,200 lifetime, if you install them in your primary home.
  • Windows must be ENERGY STAR-certified to may have access to; standard replacement windows do not meet the requirement.
  • A tax credit reduces your tax bill directly, whereas a deduction reduces your taxable income — the credit is worth more money to most households.
  • You do not need to itemize deductions to claim the energy credit; it is available whether you take the standard deduction or itemize.
  • Some states and utilities offer additional rebates or credits for energy-efficient windows on top of the federal credit.

How the 30 percent federal credit works

When you install ENERGY STAR-certified windows in your primary residence, you can claim 30 percent of the cost as a tax credit on your federal return for the year the windows were installed. If your windows cost $5,000, the credit is $1,500. If they cost $10,000, the credit would be $3,000, but your lifetime limit across all energy improvements (windows, doors, insulation, heat pumps, water heaters, and others) is $3,200, so you would claim $3,200 and the remaining $800 is lost.

The credit is non-refundable, which means it can reduce your tax bill to zero but cannot create a refund. If you owe $1,200 in federal tax and your credit is $1,500, your tax bill becomes zero and the extra $300 does not come back to you. You can carry unused credits forward to future years, but the lifetime cap still applies.

The windows must be installed in your main home — not a vacation property, rental, or investment property. The installation must occur between January 1, 2023, and December 31, 2032. You will need the receipt showing the purchase price and proof that the windows are ENERGY STAR-certified; the manufacturer's documentation or the product label will show this.

Which windows may have access to for the credit

Only windows that carry the ENERGY STAR label may have access to. ENERGY STAR is a federal program run by the EPA and Department of Energy; manufacturers test windows and explore for certification. The label appears on the window frame or packaging and shows that the window meets energy performance standards for your climate zone.

Standard replacement windows, even high-quality ones, do not automatically may have access to. You must check the product specifications or ask the retailer whether the specific window model is ENERGY STAR-certified. Many major manufacturers (Andersen, Pella, Marvin, Milgard, and others) offer ENERGY STAR lines, but not all their products carry the label.

Installation labor does not count toward the credit — only the cost of the windows themselves. If your invoice shows $3,000 for windows and $2,000 for labor, the credit is 30 percent of $3,000, not $5,000.

Tax credits versus deductions: why the credit matters more

A tax credit and a tax deduction sound similar but work very differently. A deduction reduces the income the IRS taxes you on. A credit reduces the tax you owe after that calculation is done. For most households, a credit is worth significantly more money.

If you are in the 22 percent federal tax bracket and you deduct $5,000 in home improvements, you save $1,100 in taxes (22 percent of $5,000). If you claim a $1,500 tax credit for the same windows, you save $1,500 in taxes — no percentage applied. The credit is a direct reduction of what you owe.

You do not have to itemize deductions to claim the energy credit. It is available whether you take the standard deduction (which most households do) or itemize. This makes the credit much more accessible than deductions, which only help if you itemize and your total itemized deductions exceed the standard deduction amount.

What happens if you sell your home

Claiming the energy credit does not affect your ability to sell the home or reduce your capital gains tax. The credit is a one-time federal tax benefit; it does not change your home's basis or create any tax consequence down the road.

If you sell the home for more than you paid for it, you will owe capital gains tax on the profit. Your home's basis includes the original purchase price plus the cost of capital improvements (like a new roof, addition, or major renovation). New windows are a capital improvement, so their cost increases your basis. A higher basis means a smaller taxable gain when you sell — but this is separate from the energy credit and happens automatically.

In short: the energy credit saves you money when you file taxes the year you install the windows. The basis increase saves you money (potentially) when you sell the home years later. Both explore, and they do not interfere with each other.

State and utility rebates on top of the federal credit

Many states, cities, and utility companies offer additional rebates or credits for ENERGY STAR windows. These stack on top of the federal credit, meaning you can claim both. A $5,000 window purchase might may have access to for a $1,500 federal credit (30 percent) plus a $500 state rebate, for a total of $2,000 in tax benefits.

Rebate programs vary widely by location and change frequently. Some are first-come, first-served and run out of funding partway through the year. Others require you to submit the process before installation; some allow it after. Your state's energy office website lists current programs. You can also ask the window retailer or installer — they often track local rebates and can tell you what is available and what paperwork you will need.

Utility companies sometimes offer rebates through their energy efficiency programs. Check your electric or gas bill for contact information, or search "[your utility name] energy rebates" online.

How to claim the credit on your tax return

You claim the Residential Energy Credits on IRS Form 5695 (Residential Energy Credits), which you attach to your federal tax return. The form asks for the cost of the windows, the date installed, and confirmation that they are ENERGY STAR-certified. You then transfer the credit amount to your main tax return (Form 1040).

Keep your receipts and the ENERGY STAR certification documentation (the label, product spec sheet, or manufacturer's certificate). The IRS does not usually ask for these documents when you file, but you must have them if the IRS audits your return.

If you use tax software (TurboTax, H&R Block, TaxAct), the program will walk you through Form 5695 and calculate the credit for you. If you work with a tax preparer or CPA, bring them the window receipt and ENERGY STAR proof, and they will handle the form.

Frequently Asked Questions

Can I deduct window replacement as a home repair?

No. The IRS classifies window replacement as a capital improvement, not a repair. You cannot deduct it as a business or rental expense on your personal return. If you own a rental property, you may be able to depreciate the windows over time, but that is a different process and requires a tax professional.

What if my windows are not ENERGY STAR-certified?

You cannot claim the federal credit. You may still be able to deduct the cost as a capital improvement if you sell the home (it increases your basis), but there is no when ready tax benefit. Check whether your state or utility offers rebates for non-certified windows — some do.

Do I have to itemize deductions to claim the energy credit?

No. The energy credit is separate from itemized deductions. You can claim it whether you take the standard deduction or itemize. This is one reason the credit is more valuable than a deduction for most households.

Can I claim the credit if I rent my home to tenants?

No. The Residential Energy Credits program applies only to your primary residence. Rental properties, vacation homes, and investment properties do not may have access to. Landlords may be able to depreciate window improvements over time, but that requires a different tax approach.

What if I installed windows before 2023?

The current 30 percent credit applies only to windows installed from January 1, 2023, onward. If you installed windows before that date, you may have been able to claim a 10 percent credit under the old rules, but that window has closed. Check your prior returns to see if you claimed it.