Business Tax Strategy
Tax · 179D
The 179D Deduction —
Energy Efficiency That Pays You Back
If you have put money into lighting, HVAC, insulation or the shell of a commercial building, the tax code may already owe you something for it. Section 179D is a deduction for energy efficient commercial buildings, measured per square foot. On a large building it is not a small number, and most owners have never heard of it.
How 179D is measured
The deduction scales with the size of the building and how much the improvements beat the energy standard. Rates step up when prevailing wage and apprenticeship requirements are met, so the same project can be worth very different amounts depending on how the work was contracted.
What has to be true
A commercial building, new or retrofit
Offices, warehouses, retail, industrial space, and larger multifamily buildings. New construction and improvements to an existing building can both qualify.
The work touched energy use
Interior lighting, HVAC and hot water, or the building envelope — walls, roof, windows, insulation. These are the three systems the deduction is written around.
It beats the benchmark by enough
The improvement has to show a modeled energy cost reduction against the reference standard. How far past the line you land is what sets the rate.
A qualified professional certifies it
This is not self-declared. A licensed engineer or contractor models the building and signs the certification, and that study is what supports the deduction.
The designer allocation — the part contractors miss
When the building belongs to a government body or a tax-exempt owner, that owner has no tax bill to use the deduction against. The code lets them allocate it to the designer instead — the architect, the engineer, or the design-build contractor. If your firm has designed schools, municipal buildings, universities or hospitals, this is a deduction you may have earned and never asked for. You have to request the allocation from the owner, and it is easier to get while the relationship is fresh.
Before you count on it
179D has been rewritten more than once, and the rate, the standard it is measured against, and the labor requirements all depend on when the property was placed in service. Two identical buildings finished a year apart can land on different rules. Get the year pinned down first, then price the study.
We work alongside the people you already pay
We are not here to replace anybody. Most of this work runs through partnerships with the firms already touching your payroll and your return: payroll processors, PEOs, health benefits brokers, CPAs and tax strategists. Your payroll company keeps running payroll. Your CPA keeps filing. We handle the piece in the middle that neither one is paid to go find.
If you are one of those firms, the same door works the other way. We bring your clients a savings conversation you do not have to staff, and you stay in the loop the whole way.
See who we partner withSee if your building counts
Tell us the square footage, what you upgraded, and the year it was finished. That is usually enough to know whether a certification study is worth ordering.
Keep Reading
More in Business Tax Strategy
Sources
IRS.gov — Energy Efficient Commercial Buildings Deduction
Educational content only. Always consult a licensed CPA before implementing.