=+life of five years and no residual value. In the past, all equipment has been leased. For tax purposes, Mike is considering depreciating the equipment by the straight-line method. He discussed the matter with his CPA and learned that, although the straightline method could be elected, it was to his advantage to use the Modified Accelerated Cost Recovery System (MACRS) for tax purposes. He asked for your advice as to which method to use for tax purposes.