In the presentcase, the relevant assessment year is 1999-2000. The main contention of the Revenue is that the respondent cannot be allowed to claim deduction regarding lease equalisation charges since as such there is no express provision regarding such deduction in the IT Act. However, it is apt to note here that the respondent can be charged only on real income which can be calculated only after applying the prescribed method. The IT Act is silent on such deduction. For such calculation, it is obvious that the respondent has to take course of Guidance Note prescribed by the ICAI if it is available.