Deferred payment of import duty permits eligible importers to pay customs duty by specified due dates subject to electronic payment rules. Notification prescribes Deferred Payment rules under section 47 proviso of the Customs Act, 1962: eligible importers must notify the Principal Commissioner/Commissioner to obtain permission; duty is payable by specified due dates linked to Bill of Entry return periods; payment is to be made electronically unless a written exemption is granted; repeated defaults within three months disqualify an importer from deferred payment until full duty and interest are paid; goods not assessed or not declared are excluded.