Rule 4 (2)(a) The CENVAT credit in respect of capital goods received in a factory or in the premises of the provider of output service or outside the factory of the manufacturer of the final products for generation of electricity for captive use within the factory, at any point of time in a given financial year shall be taken only for an amount not exceeding fifty per cent. of the duty paid on such capital goods in the same financial year :
X X X
(b) The balance of CENVAT credit may be taken in any financial year subsequent to the financial year in which the capital goods were received in the factory of the manufacturer, or in the premises of the provider of output service, X X X
As per Rule 4(2)(a)not exceeding fifty percent means any amount within 50% which means one may not take credit in the first year. In any year after that he will avail the balance credit.
If the credit is not entered in the first year, full credit can be taken in subsequent year, but within one year limitation