Cost Segregation is an IRS-approved depreciation process for individuals or companies that own commercial buildings. IRS code allows owners to take accelerated depreciation on building costs according to IRS guidelines. By accelerating depreciation, you can enjoy tax deductions right now that you would otherwise have to wait up to 39 years to receive. A Cost Segregation Study can help you identify, segregate, and reclassify all building components into a report which your tax preparers can use to complete the appropriate federal tax form: 3115.