1. Buying shares on capital account. i.e. No purpose of re-sale, not part of a business, no profit making undertaking or not dealing in shares. CB 1, 3, 4, 5 Income Tax Act 2007 then brokerage is not deductible as you are buying a capital asset.

2. Buying shares with the purpose of re-sale, as part of a business or as a dealer in shares brokerage is deductible as you are buying revenue account property.