Section 179 of the IRS tax code details both what and how much businesses can deduct from their taxes from qualifying purchases. Eligible Section 179 deductions include physical items that are purchased as business assets, like machinery, software, and vehicles.When you buy a Mercedes-Benz over 6,000 pounds, you can maximize your tax savings with the Section 179 deduction. The Section 179 deduction allows businesses to deduct the full purchase price of qualifying equipment and software purchased or financed during the tax year.