The Section 179 deduction limit for 2017 is $500,000. This is a very healthy tax deduction, and means businesses can deduct the full cost of qualifying equipment from their 2017 taxes, up to $500,000. This can really matter to your bottom line at the end of the 2017 tax year.
However, to qualify for Section 179 for 2017, the equipment must be purchased and put into service by midnight 12/31/2017. Use Form 4562 to claim your deduction.