Due to technical difficulties, credit card payments will not be available until the last week in January. Installment payments can NOT be paid with a credit card. 

How to Pay Unpaid Taxes

Any DELINQUENT taxes have to be paid to the Sullivan County Treasurer at
100 N Street
Monticello, NY 12701

Please call first: 845-807-0200.

Online Payments During Tax Season

Also taxes may now be paid online with a credit card during tax season. Follow the payment prompt at 3% convenience fee.

Tax Lookup

If you would like to look up your taxes for the 2018 fiscal year please visit the following link: http://www.taxlookup.net