Money & Taxes
Sullivan Delinquent Taxes Route Through the Treasurer
Sullivan county and town back-tax checks start with the Treasurer lookup, but payment still has to run through the office.
Published June 23, 2026 ยท Last verified June 23, 2026
Sullivan County gives delinquent county and town taxpayers a lookup route, but payment is not self-serve inside the lookup. Delinquent county and town taxes can be viewed online. They can then be paid directly to the Treasurer by check, money order, in person, or by calling the office for card payment. Installment agreements are a separate county route.
They apply to county and town taxes, not village taxes. Confirm the parcel, tax year, and current balance with the Treasurer before mailing money. Keep the parcel, bill, account, tax year, or payment record with the date you checked it before treating the answer as final.
The clean move in Sullivan County is to turn the question into one named record. From Sullivan County Treasurer: Property Taxes, save the exact delinquent taxes or county treasurer, the date, and the number or address that would let an office find the same thing again. Write Sullivan County Treasurer beside the note, especially when a later question turns on money, title, access, a permit, a license, or a deadline. Sullivan County delinquent taxes or county treasurer errands move faster when the public lookup and the office answer are saved together.