The excerpts in page 9 of the circular given below.
"3.6
In order to encourage investment, the Finance Act, 2005 has amended section 32 to increase the rate of additional depreciation to twenty per cent on new machinery and plant other than ships and aircraft, acquired and installed after the 31st day of March, 2005, and dispensed with the condition of additional depreciation to be allowed to a new industrial undertaking and the condition of expansion in installed capacity."