UStax_deductionflat_per_unit

Energy-Efficient Commercial Buildings Deduction

US-179D · United States (Federal)

Summary

Deduction for property owners and qualified designers (post-IRA) for energy-efficient commercial buildings. Covers HVAC, lighting, building envelope, and advanced metering. Includes prevailing-wage and apprenticeship bonus rates.

Benefit

Percentage
Flat
Duration
Max annual
(taxpayer)
Max total
(taxpayer)
Carryforward

Program metadata

Distribution
taxpayer_earned
Claimant subject
business
Refund/transfer election
Program family
Effective
Sunset
Application deadline
Transfer discount

Hard requirements (1)

  • local_approval_requiredFederal claim-on-return credit. No agency pre-approval gate — the taxpayer claims the credit on their return based on satisfying the statutory eligibility criteria (qualified activity, qualified expenditures, qualified employees, etc.). User attests via the securedApprovals chip group on /match that they have determined the underlying §-criteria are met. Without attestation this rule defaults to "unknown" → status="partial" instead of vacuously "eligible".

Preference / tiering rules (0)

None.

NAICS industries (0)

Any.

Geo zones (0)

Statewide / none specified.

Tags (4)

  • bonus_rate_prevailing_wage: true
  • bonus_rate_apprenticeship: true
  • post_ira_qualified_designers: true
  • filing_form: Form 7205 (Energy Efficient Commercial Buildings Deduction)

Tax bases

  • corporate_income_taxprimary

Approval requirements (1)

  • requiredUS IRS — self-attestation that qualifying activity meets statutory criteriaSelf-attestation: confirm the qualifying activity meets the statutory eligibility criteria for this §-code credit. Tax preparer / CPA verification recommended.

Source

https://www.irs.gov/forms-pubs/about-form-7205
IRC §179D; Form 7205
Last verified: 2026-04-22