The federal solar tax credit ended in 2025 — what it means for you

For most of the last decade, the single biggest reason rooftop solar penciled out was the federal tax credit — 30% of the system cost, handed back on your tax return. As of 2026, for a system you buy, it’s gone. The One Big Beautiful Bill Act ended the residential credit at the close of 2025, with no phase-down. If you’ve been quoted a payback that leans on “the 30%,” it’s out of date. Here’s exactly what changed, who can still benefit, and what it does to the maths.

This is a plain-English explainer, not tax advice. Tax outcomes depend on your situation and on rules that are changing — confirm the details with a tax professional or the IRS.

What changed, precisely

The credit at issue is the Section 25D Residential Clean Energy Credit — the one a homeowner claims for a system they own. The One Big Beautiful Bill Act (Public Law 119-21, signed 4 July 2025) states the credit “shall not apply with respect to any expenditures made after December 31, 2025.” In plain terms: it dropped from 30% straight to 0% on 1 January 2026. There is no 26%-then-22% glide path like the one solar had survived before — this is a hard stop.

It’s the install date that counts

The deadline hinges on when your system was placed in service — fully installed, inspected and generating — not when you signed or paid. The IRS guidance is explicit: an expenditure is treated as made when the original installation is completed. So a system switched on by 31 December 2025 still earns the 30% credit on that year’s return; one energised on 2 January 2026 earns nothing. If you bought in 2025 and have unused credit, the normal carry-forward rules still let you roll it into future tax years.

The one way a federal credit still reaches homeowners: lease and PPA

The residential credit ended, but the separate commercial clean-energy credit did not end on the same schedule. Under third-party ownership — a solar lease or a power purchase agreement (PPA) — a company owns the panels on your roof, claims that commercial credit itself, and (in a competitive deal) passes some of the value back to you through a lower monthly payment or PPA rate. You don’t own the system and you don’t claim anything on your own taxes, but the federal subsidy can still indirectly lower your cost. These arrangements have their own trade-offs — escalator clauses, transfer-on-sale terms, and a smaller lifetime return than ownership — so read them carefully. This route also has its own deadlines, so don’t assume it’s open indefinitely.

What it does to payback

Removing 30% of the net cost is a big swing. Take a $24,000 system: under the old credit it netted to about $16,800; now you’re carrying the full $24,000. At an annual bill saving of roughly $1,980, that’s the difference between an ~8.5-year payback and an ~12-year one. The credit didn’t just sweeten the deal — it pulled break-even forward by years. Every honest 2026 estimate, including ours, has to model the higher net cost. (If a calculator still shows you a 30%-credit payback, it hasn’t been updated.)

Does solar still pay without it?

Often, yes — but the answer now depends even more on where you live. In high-rate states (Hawaii, California, the Northeast), where power costs 25–40¢/kWh, the bill savings alone still recover the system in a reasonable span, and you’re hedged against decades of rising prices. In cheap-power states (12–14¢/kWh) with weak net metering, the loss of the credit can push payback past the point where it clearly makes sense — that’s simply the honest picture. What moves the needle most now:

• Your electricity rate — the higher it is, the more every solar kWh is worth.
• State, utility and SREC incentives, which still exist and matter more than ever now the federal credit is gone.
• The price you pay per watt — shopping quotes hard is now the biggest lever you fully control.

How we handle it

Every estimate on this site now applies no federal credit by default, because that’s the reality for a purchased system in 2026. State and utility incentives vary too much to hard-code, so we link each state to the DSIRE database and let you type any incentive into the calculator. Want the honest, post-credit number for your home? Run your payback →