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State research · updated July 2026

Replacement Windows in Mississippi

Current incentive status, energy-code requirements, and local market research for Mississippi homeowners replacing windows and doors.

Rebates & incentives

The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.

Mississippi's IRA Home Energy Rebates are administered through the Mississippi Development Authority Office of Energy (Energy & Natural Resources). As of mid-2026 consumer-facing HOMES/HEAR pathways were not clearly open for standard single-family window projects — treat status as pending and confirm at mississippi.org / MDA Office of Energy before promising rebate money. Windows would generally fit only inside a whole-home modeled-savings track when programs launch, not as a retail per-window check.

  • Entergy Mississippi / Mississippi Power efficiency programs. Investor-owned utilities in Mississippi run residential efficiency programs that typically emphasize HVAC, weatherization, and equipment rather than a standalone window replacement rebate. Availability and measure lists change — confirm current offers with your electric utility. Do not count on a simple per-window utility check. (Entergy Mississippi; Mississippi Power residential efficiency pages; MDA Office of Energy)

Energy code

Mississippi has historically had limited statewide residential energy-code stringency relative to many states — confirm the edition enforced by your local building official. Most of the state is IECC climate zone 3A (warm, moist); ENERGY STAR South-Central targets for replacement windows are a U-factor of 0.28 or lower and an SHGC of 0.23 or lower under Version 7.0.

Local market research in Mississippi