Collect your receipts related to energy-efficient commercial building property. Included in the receipts should be any certifications from the construction.
Enter the amount of deduction under "other deductions" on the appropriate form. As of 2010, no forms had a spot for a 179D deduction, so it must go under "other deductions." The appropriate form is Form 1120 for corporations, Form 1120-S for S corporations and Form 1065 for partnerships.
Attach a document listing all other deductions taken to the tax form.
- A young woman holding a pen, doing her taxes image by Christopher Meder from Fotolia.com