(a) General. -– The qualified investment is one hundred percent of the cost for eligible safety property pursuant to a qualified purchase, which is placed in service or use in this state by the eligible taxpayer during the tax year.
(b) Placed in service or use.– For purposes of the credit allowed by this article, property is considered placed in service or use in the earlier of the following taxable years:
(1) The taxable year in which, under the taxpayer's depreciation practice, the period for federal income tax depreciation with respect to the property begins; or