Real Estate Tax Calc
The Investment Tax Credit (ITC)
Solar energy property placed in service on a rental qualifies for the Investment Tax Credit (ITC) under IRC Section 48 — currently 30% of the cost, as restored and expanded by the Inflation Reduction Act of 2022. On a $30,000 solar installation, the credit is $9,000 directly offsetting your tax liability.
The ITC is a credit, not a deduction — it reduces your tax dollar for dollar. However, it is subject to passive activity rules. If the rental is a passive activity and you have no passive income to absorb it, the credit carries forward to future years when you have passive income or the activity is disposed of.
Depreciation: 5-year MACRS plus bonus
Solar equipment is classified as 5-year MACRS property, not 27.5-year real property. A $30,000 solar installation (reduced by half of the ITC, or $25,500 depreciable basis after the 50% ITC adjustment rule under IRC 50(c)) qualifies for bonus depreciation in the year placed in service.
With 40% bonus depreciation in 2025, the first-year deduction on the adjusted $25,500 basis is $10,200, with the remaining $15,300 depreciated over years two through six. Combined with the $9,000 ITC, the total first-year tax benefit on a $30,000 solar system can exceed $15,000 for an investor in the 37% bracket.
Passive activity limitations
Both the depreciation deduction and the ITC flow through to your return with passive activity limitations if the rental is passive. The depreciation becomes a passive loss (potentially limited), and the ITC is a passive activity credit (limited to tax on passive income).
Investors with real estate professional status or active short-term rentals can use both without limitation against ordinary income. Others may need to carry the credit and losses forward or plan around passive income sources.
The basis-reduction rule in detail
The interaction between the credit and depreciation trips up many first-time filers. Under IRC § 50(c), when you claim an investment credit you must reduce the property's depreciable basis by 50% of the credit. So a $30,000 system generating a $9,000 (30%) credit is depreciated on a basis of $30,000 − $4,500 = $25,500, not the full $30,000. You are not double-counting the same dollars: the government effectively gives you the full credit and lets you depreciate all but half of it.
The practical effect is that solar delivers both a dollar-for-dollar credit and a depreciation stream on nearly the whole cost — a combination few other rental improvements offer. But you must apply the reduction; depreciating the full $30,000 while also claiming the $9,000 credit overstates your deductions and is a common audit adjustment. Keep the installer's invoice, the in-service date, and your basis-reduction worksheet with your permanent records.
ITC recapture if you dispose within five years
The investment credit is not permanent the moment you claim it — it vests over five years. Under IRC § 50(a), if you sell the property, stop using the solar equipment in the business, or otherwise dispose of it within five years of placing it in service, part of the credit is recaptured (added back to your tax). The recapture declines 20 percentage points per year: sell in year one and 100% of the credit is recaptured; year two, 80%; year three, 60%; year four, 40%; year five, 20%; after the fifth full year, none.
This matters for investors who flip or exchange properties. Selling a rental with recently installed solar can claw back a chunk of the credit you counted on. Note that a 1031 exchange has special rules — a like-kind exchange is generally not treated as a disposition that triggers full recapture if the replacement property continues the qualifying use, but the analysis is technical, so confirm the treatment before exchanging a property with unvested solar credits.
Bonus depreciation on the solar system
Because solar equipment is 5-year MACRS property, it qualifies for bonus depreciation (bonus applies to property with a recovery period of 20 years or less). Bonus had been phasing down, but the One Big Beautiful Bill Act restored 100% bonus depreciation for qualifying property placed in service after January 19, 2025. For a system placed in service under that rule, the entire post-basis-reduction amount can potentially be deducted in year one rather than spread over six years.
On the $30,000 example with a $25,500 depreciable basis, 100% bonus could produce a $25,500 first-year deduction on top of the $9,000 credit — a combined first-year tax benefit that, for a high-bracket investor who can actually use the loss, approaches or exceeds half the system's cost. As always, the passive activity and at-risk rules govern whether that loss offsets other income now or carries forward, so model your ability to use it before assuming the full benefit.
Business ITC versus the residential (§ 25D) credit
Two different solar credits exist, and using the wrong one is a costly error. The residential clean energy credit under IRC § 25D is for solar on a home you live in — it is a personal credit and does not apply to property you rent to others. Rental and investment property uses the business investment tax credit (historically § 48, and § 48E for certain property placed in service after 2024). The business credit is the one that pairs with depreciation and the basis-reduction rule.
If you live in one unit of a duplex and rent the other, or use part of a mixed-use building personally, you may have to allocate the system between the personal-use portion (§ 25D) and the business-use portion (business ITC). Get the allocation right, because the two credits have different rules, forms, and recapture provisions. When in doubt about which credit applies to a mixed-use situation, have a tax professional confirm the split.
Watch the shifting eligibility timeline
Federal clean-energy incentives have changed repeatedly, and 2025 legislation accelerated the phase-out of several clean-electricity credits, tightening the windows in which projects must begin construction or be placed in service to qualify. Because the exact deadlines and any bonus adders (for domestic content, energy communities, or prevailing-wage compliance) depend on when your project starts and finishes — and are subject to ongoing Treasury guidance — confirm current eligibility before you rely on a specific credit rate.
The stable planning points are these: the credit is claimed on Form 3468 and flows to your return, depreciation is claimed on Form 4562, the § 50(c) basis reduction always applies, and the five-year recapture rule always applies. The rate and the deadline to qualify are the moving pieces — verify them for your in-service year rather than assuming last year's rules still hold.
State incentives, rebates, and SREC income
Federal benefits are only part of the picture. Many states and utilities offer their own solar incentives — rebates, state tax credits, and property-tax or sales-tax exemptions — and their tax treatment varies. A utility or state rebate that reduces what you pay for the system generally reduces your federal depreciable basis (and the basis on which the federal credit is figured), because you cannot depreciate or credit money you did not actually spend. A separate state income-tax credit, by contrast, usually does not reduce federal basis but may itself be taxable or reduce your state deduction — check your state's rules.
Owners in states with net metering or solar renewable energy certificate (SREC) markets can also earn income from the system. Payments you receive for exporting power or selling SRECs are generally taxable income to a rental business and belong on Schedule E along with the property's other income. Track rebates, credits, and any SREC or net-metering payments separately so your basis, your federal credit, and your reported income are all computed on the correct figures. When a state program's federal treatment is unclear, get it confirmed before filing rather than guessing.
Frequently asked questions
Is the ITC available for rental property solar?
Yes — the business investment tax credit (historically IRC Section 48, and Section 48E for certain property placed in service after 2024) applies to solar installed on investment and rental properties. Passive activity rules may limit when you can use it.
Does the depreciable basis need to be reduced for the ITC?
Yes. Under IRC 50(c), the depreciable basis is reduced by 50% of the ITC. On a $30,000 system with a $9,000 credit, the depreciable basis is $30,000 − ($9,000 × 50%) = $25,500.
Can I claim both the ITC and depreciation?
Yes — they are complementary, though the basis reduction rule means you cannot claim the full ITC and depreciate the full cost.
What happens if I sell the property within five years of installing solar?
Part of the credit is recaptured under IRC Section 50(a). The recapture is 100% if you dispose in year one and drops 20 percentage points each year — 80%, 60%, 40%, 20% — reaching zero after the fifth full year. Selling early can claw back much of the credit you claimed.
Does the residential solar credit (Section 25D) apply to my rental?
No. Section 25D is a personal credit for solar on a home you live in. Property you rent to others uses the business investment tax credit, which is the one that pairs with depreciation and the basis-reduction rule. Mixed-use buildings may require allocating the system between the two.
Can I take bonus depreciation on rental solar?
Yes. Solar is 5-year MACRS property, which qualifies for bonus depreciation. The One Big Beautiful Bill Act restored 100% bonus for qualifying property placed in service after January 19, 2025, so the post-basis-reduction amount can potentially be deducted in year one — subject to the passive activity and at-risk limits.
What forms do I use to claim the solar credit and depreciation?
The investment tax credit is claimed on Form 3468 (which flows to the credit forms on your return), and the depreciation is claimed on Form 4562 and reported through Schedule E for a rental. Keep the installer invoice, the placed-in-service date, and your basis-reduction worksheet as support.
Sources
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.