Tax Rate On Income From ARBITRAGE (Stock Market)

Dear All,

My Client has Income From Arbitrage (Stock Market), So whether it is to be taken as speculative income or not?

In Which Head does it fall?

Please assist me in detail.

(Arbitrage is the transaction of buying some scriptts in NSC and selling in BSC or vice versa)

My client does all the transactions on his ID i.e. on his name, STT and other taxes plus brokerage, all are paid.

so which provisions are applicable to this? please give your suggessions in detail.. please..