the Actmeans the Local Government Finance Act 1988;
the appropriate amounthas the meaning given in paragraph (7);
the chargeable amountmeans the amount that the chargeable person is liable to pay in respect of the community charge to which the demand notice mentioned in paragraph (1) relates as it has effect for the relevant year;
the estimated amountmeans the amount last estimated under regulation 16(3) for the purposes of that notice or any subsequent notice given under paragraph 7(2) of Schedule 1 prior to the payment of the single lump sum mentioned in paragraph (1) above;
the principal Regulationsmeans the Community Charges (Administration and Enforcement) Regulations 1989.