Decide how the purchased property will be used in your business. For example, if you buy furniture for a home office, you may deduct or depreciate the cost of the furniture as a business expense. However, if you buy a video game console, even if you use the business name to make the purchase, it will not be considered a legitimate deductible business expense unless you are in the video game business. Only personal property purchased for the direct conduct of business is tax deductible.
Determine whether a portion of your personal property purchased for a sole proprietorship is tax deductible. For example, if you buy a new computer and use it for business 75 percent of the time and for personal use 25 percent of the time, you can deduct 75 percent of the costs associated with buying, owning and operating the computer.
Consider the tax advantages of existing large personal property purchases that are used, in some way, for the conduct of business. You can legally deduct the costs associated with your dedicated home office, including a portion of your mortgage payment and utilities. You can also deduct expenses related to purchasing or leasing a vehicle for business use. The same rules apply: only the portion of use directly attributable to legitimate business operations is deductible.