Income from Derivatives is Taxed as Business Income (Speculation)...Your Tax Lawyer has done correct computation.... but your Loss can be carried forward and offset against in the subsequent FY...think it can be carried forward for 3 years though, not sure about the number of years.
Which means if you had incurred Loss in this FY11-12 and profit in the next FY12-13 then your loss of FY11-12 can be adjusted when filing your returns for FY12-13. (Under same heading)
SG
Which means if you had incurred Loss in this FY11-12 and profit in the next FY12-13 then your loss of FY11-12 can be adjusted when filing your returns for FY12-13. (Under same heading)
SG
And for carry forward of loss..... return should have been filed within due date..... it can be carried forward for 8 years if filed within Due Date...