Vt. Stat. tit. 32 § 4872
In a town so voting to collect taxes on real and personal property in installments, all such taxes assessed on the grand list shall be due and payable in such installments as the town may vote, not to exceed four in number, payable to the town treasurer or collector. A taxpayer who pays each installment in full on or before the due date thereof shall be entitled to such rate of discount as the town may vote for the payment of each installment. No discount on any installment shall be allowed unless such installment shall be paid on or before the due date thereof. A taxpayer may anticipate subsequent installments and pay the same and shall be entitled to the proper rate of discount applicable at the time of payment. However, in towns where the annual settlement with the auditors is had on January 1, the fourth installment payment shall be due on December 31 preceding.
32 V.S.A. § 4872