General insurance income computed under the special statutory...

General insurance income computed under the special statutory scheme preserves statutory depreciation after book depreciation is withdrawn, consequential fixed-asset sale adjustments, and later deduction of expenditure once tax deduction and deposit conditions are met, preventing permanent double disallowance. Profit on sale of investments is excluded after omission of Rule 5 clause (b), while dividend exemption remains available and Section 14A adjustments not specified in Rule 5 do not apply. AMP spending alone does not establish an international transaction absent an arrangement with an associated enterprise. Co-insurance fees in a principal-to-principal relationship are not commission for tax withholding; hardware consumables without an independent capital asset are revenue expenditure.