(1) If the whole amount is paid within two months after the date of the tax notice, a discount of at least two per centum from the amount of such tax shall apply.

(2) If paid within four months after the date of the tax notice, no penalty may be imposed and said taxes shall not be considered delinquent even if the payment occurs after December 31.

(3) If, as of December 31, taxes remain unpaid and less than four months have elapsed since the date of the tax notice, the taxing district shall reissue the duplicate to the elected tax collector in order to permit the taxpayer four months from the date of the tax notice to pay said taxes before either a penalty is imposed or a delinquency is declared.