S. 115JB : Book profit – Liabilities of gratuity and leave encashment -Notes appended to accounts- Should be adjusted while computing book profit- Adjustment in respect of prior period items comprising of impact of lease rent equalization and gratuity expenses of earlier years should be made, while computing book profit- Exempt income – Disallowance is not considered while computing book profit- Dividend income is exempt ,should be excluded in computing book profit .[ S. 10(34 )14A, 145 , R.8D AS. 15 ]