Safe harbour option under income tax rules requires disclosure of eligible transactions, thresholds, certifications and verification conditions. Safe harbour option under the income-tax rules is exercised through a prescribed application form requiring the assessee to furnish identification particulars, business status, contact details and the tax years for which the option is sought. The form is structured around separate transaction categories and permits selection of one or more eligible transactions, including eligible international transactions, eligible specified domestic transactions and eligible business, with the relevant parts completed only for the categories chosen. For eligible international transactions, the form separately captures provision of information technology services, other specified international transactions, intra-group loans, corporate guarantees and low value-adding intra-group services, together with associated enterprise particulars, financial details, margins, thresholds and supporting accountant certification where required. For eligible specified domestic transactions and eligible business, the form requires disclosure of tariff orders or commission approval, transaction amounts, pricing basis, gross receipts, taxable profits and specified confirmations concerning deductions, depreciation treatment and set-off restrictions, followed by verification, certification and signature requirements.