Rule 100 says the income-tax authorities accept an eligible assessee's option for the safe harbour on income from raw diamond sales or bonded-warehouse component storage if declared profits meet the minimum percentage of gross receipts, with the consequences for deductions, losses and depreciation.
100
Rules 2026 · Rule 100
Safe harbour for income attribution in case of income from business and profession
Rules 77-130
Acceptance (sub-rule 1). The authorities accept the option exercised under rule 101 where the income declared from the eligible business accords with sub-rule (2), unless the option is declared invalid under rule 101(3).
The minimum (sub-rule 2). Profits and gains chargeable under the head "Profits and gains of business or profession" must be at least 4% of gross receipts for selling raw diamonds, and at least 2% of gross receipts for storing components in a custom bonded area warehouse for sale to a contract manufacturer.
Consequences once the option stands (sub-rule 3).
Other points (sub-rules 4 and 5). Sections 171 and 172 still apply to an international transaction or specified domestic transaction the eligible assessee enters into while carrying on the eligible business; those terms have the meanings in sections 163 and 164.