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Architecture and Engineering Firms Face Permanent Loss of Six-Figure Tax Deductions as Section 179D Terminates June 30, 2026
- The One Big Beautiful Bill Act, signed on July 4, 2025, permanently ends the Section 179D tax deduction for architecture and engineering firms for projects starting after June 30, 2026.
- Firms that designed energy-efficient government or nonprofit buildings since 2006 can claim up to $5.81 per square foot in deductions, with a 100,000 square foot project amounting to about $167,000.
- Most eligible firms have not claimed these deductions because their accountants were unaware of the designer allocation mechanism, which allows designers to claim the deduction instead of building owners.
- Sunbridge Advisory advises firms to inventory applicable past projects, identify energy-efficient designs, and promptly request allocation letters from building owners to benefit before the deduction ends.
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Total News Sources64
Leaning Left8Leaning Right3Center22Last UpdatedBias Distribution67% Center
Bias Distribution
- 67% of the sources are Center
67% Center
L 24%
C 67%
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