Do Skylights Qualify for Florida Energy Tax Credits? What PBC Homeowners Can Claim in 2026

Skylights and solar tubes installed on PBC homes can qualify for federal energy tax credits — but the eligibility criteria are specific, the documentation requirements are real, and the maximum credit per year is more modest than many homeowners expect. The federal 25C Energy Efficient Home Improvement Credit allows homeowners to claim 30% of the cost of qualifying ENERGY STAR certified skylights, up to a $600 annual maximum for all exterior windows and skylights combined. Florida does not offer a separate state skylight tax credit. This guide explains exactly what qualifies, what the credit covers and does not cover, what documentation you need to claim it, and how to maximize the credit value for a PBC skylight installation.

The federal 25C credit — what it covers for skylights

The Inflation Reduction Act of 2022 expanded and extended the federal 25C Energy Efficient Home Improvement Credit through 2032. Under the current credit structure, homeowners can claim 30% of the cost of qualifying energy-efficient home improvements, subject to annual category caps. For skylights and exterior windows combined, the annual cap is $600 — meaning the maximum federal tax credit a PBC homeowner can claim for a skylight installation in any single tax year is $600, regardless of how much the installation cost.

The credit applies to the cost of the qualifying skylight product itself — not to installation labor, interior well framing, flashing materials, or permit fees. A skylight unit that costs $1,200 and qualifies under the ENERGY STAR certification criteria generates a credit of $360 (30% of $1,200). A skylight unit that costs $2,500 generates a credit of $600 — the annual cap. Installation of a $4,000 skylight unit also generates a $600 credit because the cap limits the credit regardless of product cost above $2,000.

The $600 annual cap applies to all exterior windows and skylights combined — not to skylights alone. A homeowner who claims $400 in window credits in the same tax year can claim only $200 in additional skylight credits before reaching the $600 combined cap. Plan the timing of window and skylight installations to maximize annual credit utilization if multiple projects are planned.

ENERGY STAR certification — the qualification requirement

Only ENERGY STAR certified skylights qualify for the 25C credit. ENERGY STAR certification for skylights requires that the product meet minimum performance thresholds for U-factor (heat transfer resistance) and Solar Heat Gain Coefficient (SHGC) appropriate for the climate zone in which it is installed.

For PBC's climate zone (Climate Zone 1 — the hottest U.S. climate zone), ENERGY STAR skylight certification requires a maximum SHGC of 0.25 — a low solar heat gain specification that directly addresses South Florida's cooling load challenge. This is a more stringent SHGC requirement than the national ENERGY STAR threshold — PBC's climate zone specifically requires low-SHGC glazing to qualify. A skylight with SHGC of 0.30 that qualifies for ENERGY STAR certification in a northern climate zone does not qualify in Climate Zone 1.

The manufacturer's ENERGY STAR certification documentation — available on the ENERGY STAR product list at energystar.gov and on the product's packaging and documentation — must specify the climate zone for which the product is certified. Confirm that the product is certified for Climate Zone 1 before purchase — ENERGY STAR certification for another zone does not satisfy the 25C credit requirement for PBC installations.

For skylight installation services in Palm Beach County with ENERGY STAR Climate Zone 1 certified product specification as standard scope, a licensed contractor can confirm product eligibility before the unit is ordered.

What the credit does not cover

The 25C credit covers the cost of the qualifying skylight product only — not installation labor, interior well framing and finish, flashing materials, permit fees, or any other installation scope. On a typical PBC skylight installation where the product cost is $1,000–$2,500 and the total installed cost is $2,500–$5,000, the credit applies only to the product cost portion — typically generating a credit of $300–$600 rather than a credit on the full installed cost.

Solar tubes (tubular daylighting devices) that carry ENERGY STAR certification for Climate Zone 1 also qualify for the 25C credit on the same basis — 30% of the product cost, subject to the $600 combined annual cap with windows and other skylights. For PBC homeowners installing a solar tube at a product cost of $400–$600, the credit generates $120–$180 — a modest but real offset to the installation cost.

The credit is non-refundable — it reduces the federal income tax owed but does not generate a refund if the credit exceeds the tax liability. A homeowner who owes $300 in federal income tax after all other deductions cannot claim the full $600 skylight credit — they can only claim up to the amount of their tax liability. Unused credits do not carry forward to future tax years under the 25C structure.

Florida state energy incentives — what exists for skylights

Florida does not offer a state income tax credit for skylight or window installations — Florida has no state income tax, which eliminates the mechanism through which most state energy credits are delivered. Florida does offer a sales tax exemption on ENERGY STAR certified products — including skylights — under Florida Statute 212.08. The sales tax exemption applies at the point of purchase and reduces the upfront cost of qualifying products by Florida's 6% state sales tax rate plus any applicable county surtax.

In Palm Beach County, the combined state and county sales tax rate is 7%. A qualifying ENERGY STAR skylight with a product cost of $1,500 saves $105 in sales tax at purchase under the Florida exemption — a modest but automatic savings that does not require documentation or tax filing to claim.

Some PBC utility providers — Florida Power and Light and Florida Public Utilities — offer rebate programs for energy-efficient home improvements that may include qualifying skylight installations. These rebate programs change periodically and should be verified directly with the applicable utility before purchase. A qualifying skylight installation that reduces cooling energy use may generate a utility rebate in addition to the federal tax credit — the two benefits stack and are not mutually exclusive.

Maximizing the tax benefit on a PBC skylight installation

For PBC homeowners planning to install multiple skylights or coordinate a skylight installation with window replacements, the $600 annual cap structure creates a planning opportunity. Installing skylights in one tax year and qualifying windows in another tax year — rather than both in the same year — allows the full $600 credit to be claimed in each year separately, potentially doubling the total federal credit benefit relative to combining both in a single tax year.

For a complete breakdown of what skylight installation costs in Palm Beach County in 2026 by unit size, type, and roof system — giving you the product cost basis for calculating your specific credit amount — see our dedicated skylight cost guide.

• ✓ Confirm the specified skylight carries ENERGY STAR certification for Climate Zone 1 — not just general ENERGY STAR certification.** Climate Zone 1 requires SHGC ≤ 0.25. A product certified for another zone does not qualify for the 25C credit in PBC.
• ✓ Ask your contractor for an itemized invoice separating product cost from labor, flashing, and permit fees.** The IRS requires product cost documentation to calculate the 25C credit. A bundled invoice does not provide this.
• ✓ Keep the manufacturer's ENERGY STAR certification document with your tax records.** Required to substantiate the Form 5695 credit claim. Available on the product packaging and at energystar.gov.
• ✓ Plan installation timing to maximize the $600 annual cap.** If you are also replacing windows in the same year, the $600 cap applies to both combined. Installing skylights and qualifying windows in separate tax years generates up to $1,200 in total federal credits.
• ✓ Confirm the Florida sales tax exemption is applied at purchase.** ENERGY STAR products are exempt from Florida's state sales tax at point of purchase. Confirm the exemption is applied on the invoice — it should not require a rebate claim after purchase.
• ✓ Check FPL or Florida Public Utilities rebate programs before purchase.** Utility rebates for qualifying energy-efficient improvements stack with the federal credit. Verify current availability with your utility before installation is scheduled.
• ✓ Consult a tax professional for your specific credit calculation.** The 25C credit is non-refundable and subject to your specific tax liability. A tax professional can confirm whether the full credit is claimable against your tax owed.