Thinking of upgrading your business machines, Under Section 179, businesses that spend less than $2,000,000 a year on qualified equipment, may write-off (up to) $500,000 in 2015 The rules are designed for small companies, so the $500,000 deduction phases out when a business purchases more than $2,000,000 in one year. Note that companies cannot write off more than their taxable income.

Contact your accountant about this for further details.