Mississippi solar tax credit and rebate estimator

Two genuinely unsettled questions in Mississippi

No state credit, and the evidence on sales tax points against an exemption

Mississippi does not currently offer a statewide income tax credit or rebate program for residential solar. On sales tax, secondary sources conflict: some describe an exemption for residential solar equipment, while others say none exists. The state's own list is more telling. The Mississippi Department of Revenue's sales tax exemptions page states that an exemption must be specifically provided by law, then lists every category the state recognizes, and solar equipment for homes does not appear on it. The utility category covers electricity and fuel sold for residential use, not the equipment that generates it. Mississippi's state rate is 7%, so on a system costing tens of thousands of dollars the stakes are real. This isn't a formal ruling on solar, so confirm with your installer or the Department of Revenue whether sales tax applies to your specific invoice, and budget for it in the meantime. If you borrow for the rest of the system, the combined loan and rebate timing tool takes your rebate total and works out the monthly payment on the balance.

Your utility type decides whether you're covered at all

The Mississippi Public Service Commission's distributed generation rules apply to the state's investor-owned electric utilities, including Entergy Mississippi and Mississippi Power. Since much of the state is served by electric cooperatives instead, a meaningful share of Mississippi homeowners fall outside the mandate entirely. Some co-ops choose to offer a similar program voluntarily, on terms they set themselves, so check with your specific provider rather than assuming statewide coverage. Compare against the Louisiana incentive estimator for a neighboring state's structure. If you will borrow for the system, the combined loan and rebate timing tool shows what the same cost looks like month by month.

The export credit is not a 1:1 swap, and the Commission says so itself

Guides that describe Mississippi's program as full retail net metering have it wrong. In its July 2022 order amending the rules, the Public Service Commission renamed them the Net Renewable Generation Rules precisely because the program is not traditional net metering. The structure has two channels: power you use on site is credited at your full retail rate, while excess power you export is credited at the utility's avoided cost plus a 2.5 cents per kWh Distributed Generation Benefits Adder, which the Commission grandfathered for 25 years. That works out to well under the retail rate for exports. Low-income households, at or below 250% of the federal poverty level, receive an additional adder on top. Entergy Mississippi and Mississippi Power each file their own tariffs under these rules, so request your utility's exact current numbers before finalizing your project. Compare against the Alabama incentive estimator for another regional structure. The figures here line up with the July 2022 order amending the rules.

The federal credit still carries the most weight

With state-level incentives this uncertain and utility-dependent, your federal eligibility remains the single largest lever in Mississippi's solar math. Understanding how net metering differs from what Mississippi actually offers helps explain why the two questions get confused so often. Confirm your exact 2026 status with the federal ITC calculator, since ownership structure changed significantly what's available compared to prior years. The net metering explains the terms behind this estimate in plain language.