According To Sullivan County Trustee, Angela Taylor, The 2023 Property Tax Collection Rate Now Stands At 75-Percent. If You Failed To Pay Your Property Taxes By February 31st, You Could Be Forced To Pay Additional Penalties. Anyone Wishing To Resolve Their Tax Bill, Can Pay In Person At The Courthouse On Highway 126 In Blountville Or Online At Tennesseetrsutee.Org.