Can solar tax credits offset W-2 income? The passive activity rules explained

By the Tax Field Guide editorial team. Published 2026-10-26. Facts checked 2026-10-26. Related strategies: Solar Investment Credits, Purchased Energy Credits.

Education only; not tax, legal or investment advice. Tax rules change, and how they apply depends on your facts. No outcome is guaranteed.

The most common question about solar tax deals is some version of "can this credit wipe out the tax on my salary?" For most individuals the answer turns on one section of the tax code: §469, the passive activity rules.¹

The rule in one paragraph

A "passive activity" is a trade or business in which you do not materially participate, plus most rental activities.¹² Credits from passive activities, including general business credits such as the solar investment tax credit, can generally be used only against the tax attributable to your passive income. Any excess is not lost; it carries forward to later years until you have passive income or dispose of the activity.²³

Why this matters for W-2 earners

Wages, salaries and portfolio income (interest, dividends, most capital gains) are not passive income.² So if you buy into a solar project as an investor and someone else runs it, the credit is generally a passive credit, and it generally cannot reduce the tax on your W-2 income. Promoters sometimes skip this step. The IRS is explicit that the passive activity limits apply to these credits.²⁴

Material participation is the only door, and it is narrow

A business activity is not passive if you materially participate. The regulations give seven tests, such as more than 500 hours in the year, or more than 100 hours and at least as much as any other individual.²⁵ We cover the tests, and how courts have treated solar investors' hour logs, in material participation for solar investments.

Two practical points:

• Hours spent as an investor (reviewing statements, monitoring) generally do not count unless you are directly involved in day-to-day management or operations.⁵
• Material participation is tested year by year. Meeting it in the year the project is placed in service does not settle later years.²

Purchased credits: the same rule, written into the regulations

If you buy a credit from a developer under §6418, the final regulations say the transferred credit is treated as determined in connection with a trade or business and is subject to §469. Unless you owned an interest in the seller's business when the work was done, the purchase does not make you a participant.⁶ The IRS's own FAQ says individuals "can only use purchased credits to offset passive income tax liability" in general, and that "most taxpayers do not have passive income tax liability."⁴

Other limits that still apply

• The general business credit limit (§38). Even usable credits are capped by a formula tied to your tax and tentative minimum tax.⁷
• At-risk rules. For credits on property you own, the credit base can be limited to amounts you are actually at risk for (§49, applying §465 concepts). Non-recourse or seller financing can shrink it.⁸
• Recapture. If the property is disposed of or stops qualifying within five years, part of the credit is recaptured (§50).⁹

Questions to ask before you sign

1. Will my credit be passive? If the answer depends on my hours, what records will support them?
2. How much passive income do I actually have, and from what?
3. Is any of my "investment" financed by the seller, and is it recourse?
4. Does the deal have any of the three red flags?

Related reading

The 3.8% net investment income tax is a separate question: do tax credits reduce it?

Common questions

Can a passive solar credit offset tax on my salary?

Generally no. Credits from a passive activity can generally offset only the tax attributable to passive income, and wages are not passive income. Unused passive credits carry forward.

Can I buy transferable solar credits to reduce tax on my W-2 income?

Generally no. The final §6418 regulations treat a purchased credit as subject to §469, and the IRS FAQ says individuals can generally use purchased credits only against passive income tax liability.

What counts as passive income?

Generally income from trade or business activities in which you do not materially participate and from most rental activities. Wages and portfolio income such as interest and dividends are not passive income.

Education only; not tax, legal or investment advice. Talk to a qualified professional before acting.

Sources

1. 26 U.S.C. §469, https://www.law.cornell.edu/uscode/text/26/469
2. IRS Publication 925, Passive Activity and At-Risk Rules, https://www.irs.gov/publications/p925
3. IRS Topic No. 425, Passive activities: losses and credits, https://www.irs.gov/taxtopics/tc425
4. IRS, Elective pay and transferability FAQs: transferability (Q5 and Q15), https://www.irs.gov/credits-deductions/elective-pay-and-transferability-frequently-asked-questions-transferability
5. Treas. Reg. §1.469-5T (material participation), https://www.law.cornell.edu/cfr/text/26/1.469-5T
6. Treas. Reg. §1.6418-2(f)(3), https://www.ecfr.gov/current/title-26/chapter-I/subchapter-A/part-1/subject-group-ECFR97a4759977382b4/section-1.6418-2
7. 26 U.S.C. §38(c), https://www.law.cornell.edu/uscode/text/26/38
8. 26 U.S.C. §49, https://www.law.cornell.edu/uscode/text/26/49
9. 26 U.S.C. §50, https://www.law.cornell.edu/uscode/text/26/50