My tax bill indicates “BACK TAX DUE”, what does that mean?

According to our records, there are past due taxes in your name, or on the parcel of property in question. Call (860)535-2877 x 120 to obtain correct amount due. Delinquent taxes and interest must be paid in full before payment on current bills can be accepted. Any payment you send in toward your current taxes will be applied to the back taxes.