Additional depreciation cannot be claimed on Machinery used during earlier years

First requirement to claim of additional depreciation is that there should a new machinery or plant. A machinery is new till it is first put to use. Once it is used, it is no longer a new machinery. Admittedly, the machinery, on which additional depreciation has been claimed, was already used in various preceding previous years. Therefore, for the year under consideration, It was no more a new machinery or plant. There is nothing in the statute which allows such claim of additional depreciation every year on machinery acquired and put to use in earlier year. Accordingly, dis allowance of exces...