Commercial buildings and improvements generally are depreciated over 39 years, which essentially means you can deduct a portion of the cost every year over the depreciation period. (Land isn’t depreciable.) But special tax breaks that allow deductions to be taken more quickly are available for certain real estate investments.
Some of these were enhanced by the Tax Cuts and Jobs Act (TCJA) and may provide a bigger benefit when you file your 2018 tax return. But there’s one break you might not be able to enjoy due to a drafting error in the TCJA.
Section 179 Expensing
This allows you to deduct (rather than depreciate over a number of years) qualified improvement property — a definition expanded by the TCJA from qualified leasehold-improvement, restaurant and retail-improvement property. The TCJA also allows Sec. 179 expensing for certain depreciable tangible personal property used predominantly to furnish lodging and for the following improvements to nonresidential real property: roofs, HVAC equipment, fire protection and alarm systems, and security systems.