This answer depends entirely on the cost of the equipment you purchase. According to this article, any equipment which costs under $5,000 can be used as a one-time deduction. The depreciation on equipment costing over $5,000 can be used as an annual tax deduction. For example, if you purchase an industrial refrigeration unit that costs $10,000 you plan to use the unit for at least 10 years, You can use the depreciation cost of $1,000 per year as a tax deduction.