S. 37(1) : Business expenditure-Business as travel agent, tour operator and foreign exchange dealer-Expenditure on video shooting of tourist locations for business purposes-Capitalised in books of account-Allowable as revenue expenditure-Expenses on issue of non-convertible debentures capitalised in books and Not debited to profit and loss account-Debentures issued for meeting working capital requirements-Disallowance to extent of proceeds from debentures used as capital expenditure and allowing balance expenditure is held to be proper.[ S. 145 ]