Section 179 allows businesses to deduct the full purchase price of qualifying equipment purchased, leased, or financed during the tax year. Section179.Org is a free resource answering Section 179 questions, with tools and information on how businesses can benefit from the Section 179 Tax Deduction.When looking at form 4797, it put the sale price of the piece of equipment as a gain on sell of asset. When you dispose of an asset with a section 179 expense deduction, the disposition isn't included on Form 4684, 4797, 6252, or 8824. With Section 179 tax deductions, you may be able to deduct up to the entire purchase price of a new or used Sprinter model.