Federal Solar Tax Credit Holds at 30% for 2026 — What Homeowners Should Know
The federal solar Investment Tax Credit (ITC) remains at 30% of system cost for 2026, according to Department of Energy guidance, continuing to shape the economics of residential solar installations nationwide.
Combined with a more than 90% decline in solar system costs since 2010, the credit continues to support payback periods commonly in the 6-to-10-year range for a typical 6 kW residential system, though local electricity rates and net metering policy remain the biggest swing factors between states.
High-electricity-rate states, where each kWh of self-generated solar power offsets a more expensive grid kWh, tend to see faster payback periods than low-rate states, all else equal.
Homeowners evaluating solar should verify current-year credit rules directly with the IRS or a qualified tax professional before purchase, since eligibility details and any future legislative changes can affect the final calculation.
See how a change like this affects your own numbers with the full solar ROI breakdown for 2026.