Section 10(1)(a) in Delhi Motor Vehicles Taxation Act, 1962
(a)In a case where payment of tax has been made in accordance with clause (a) of sub-section (2) of section 4, for each complete month of the period for which such tax has been paid and which is unexpired on the date on which the tax token and the certificate of registration were surrendered of an amount equal to one-twelfth of the annual tax payable in respect of such vehicle; and