Solar Leasing After the Tax Credit: The 2026 Math

Key Takeaways

• Since January 1, 2026, an owned residential solar system earns no federal credit — but a leased or PPA system's provider can still claim the 48E business credit for systems placed in service by the end of 2027.
• The final law dropped the draft restriction that would have excluded residential leases from 48E.
• That gives third-party ownership a temporary, structural pricing edge — one that only reaches you if the contract passes it through.
• The lease's old weaknesses — escalators, buyouts, home-sale transfers — did not go away, and they still decide most deals.

Why did the buy-vs-lease question flip in 2026?

For a decade the standard advice was simple: buy if you can, because the 30% federal credit landed in the owner's pocket. The One Big Beautiful Bill Act inverted the logic. The homeowner credit (Section 25D) ended for expenditures after December 31, 2025 — the IRS Form 5695 instructions state you cannot claim it for later expenditures — while the business credit (Section 48E) survived with deadlines. A leasing company or PPA provider that owns the panels on your roof is a business; it claims 48E and prices your monthly payment with that subsidy inside.

An important detail from the legislative fight: early drafts excluded residential solar leases from 48E entirely. The signed law contains no such restriction — reporting from pv magazine USA and Solar.com both confirm leases and PPAs remain eligible when requirements are met.

How does the 48E credit reach your monthly payment?

Indirectly, and only as far as competition forces it to. The provider claims the credit, which lowers its cost of deploying your system. In a competitive market that shows up as a lower monthly payment or PPA rate than the same company could offer without the credit. Nothing in the law obliges a provider to share a cent of it — which is why the practical advice in 2026 is to collect at least one cash quote, one loan quote, and two third-party quotes, and compare lifetime costs rather than month-one payments.

Framework as of August 2026; contract terms vary by provider.

What deadlines shape the leasing window?

Two dates from the Act define it. Systems must be placed in service by December 31, 2027 for the provider to claim the credit under the general rule. Projects that began construction before July 4, 2026 enjoy an extended completion window under safe-harbor provisions. Translated to a homeowner timeline: the embedded subsidy is strongest now, and fades as providers exhaust safe-harbored equipment and the 2027 deadline closes. If a lease was ever going to look good for your roof, this is the period in which it will.

What should you still check before signing?

The tax change fixed none of the traditional lease pitfalls, so the checklist is unchanged and worth restating:

• Escalator clause — a payment rising a few percent yearly can quietly erase the 48E advantage over 20 years; ask for a flat-payment quote.
• Buyout schedule — know the price to exit at year 5, 10, and 15 before you need to.
• Home-sale transfer — confirm in writing what a buyer must qualify for; leases complicate closings more often than they sink them, but ask.
• Production guarantee — a PPA bills per kilowatt-hour, a lease should still guarantee output.
• State incentive ownership — where state credits or SRECs exist, the contract decides who collects them, and the default is rarely you.

So should you lease, buy, or wait?

If your state stack is strong — a state credit, solid net metering, decent rates — buying can still win without federal help, and owning beats renting for anyone planning to stay put. If the cash math no longer closes in your market, a well-priced 2026–2027 lease is the one legal way to get federal dollars into your solar economics, provided the contract actually passes them through. And if quotes in your area haven't yet adjusted to the new reality — some are still priced as if buyers get 30% back — waiting a quarter while the market reprices is a perfectly rational move. The subsidy clock, though, runs out with the 2027 placed-in-service deadline.

Keep reading: the federal solar credit's 2026 status · what the Big Beautiful Bill changed · claiming on Form 5695.