Tax Collector

Tax Collector

PO Box 240, 4052 State Route 42, Monticello, NY 12701

845-794-2500 Ext. 320

Office Hours
Tax Season Hours
Monday-Friday 9am-4pm
Lunch 1-2pm

The Tax Receiver collects the General Property Taxes in January. The bills are mailed in early January. The failure to mail a statement or the failure of a property owner to receive a statement will not affect the validity of the taxes or interest prescribed by law (NYS Real Property Tax Law 922). If you have not received a bill during the first week of January, please contact this office for a duplicate bill. The tax bill covers the period of January 1st – December 31st. Payments can be made upon receipt of bill through January 31st, without penalty. If they are paid on/or after February 1st, there is a penalty, see below:

  • February 1%
  • March 2% plus $2 second notice fee

After March 31st, all unpaid parcels are turned over to Sullivan County for collection. You may contact the County Treasurer’s Office at 845-807-0200 to inquire about the tax amount due. You can mail your payments after April to:

Sullivan County Treasurer
100 North Street
Monticello, New York 12701

The Tax Receiver is also responsible for the collection of the Town of Thompson’s water and sewer districts’ bills that are distributed separately. Collection is ongoing from February until September 30 annually.

Tax Collector Contacts

Heather Berg
Tax Receiver
845-794-2500 Ext. 320

Additional Information

Property tax information is available on the web (this site is maintained by my office until April 15th).  New owners, subdivisions, or property merges are not shown until the following year.  To access your tax bill, log into  Once you reach the website, select Sullivan County and then the Town of Thompson.  You can then access the tax bill by entering owner name, section, block, lot #, tax bill number or property address.

Credit card and debit card payments can be made at   Tax bills may be paid in full or installments for the amount due according to your tax bill.  Please confirm you are paying the correct amount or your online payment will be returned, thank you.  Please verify that you are paying the correct amount by going to    There is a service fee of 3% on the full tax amount.

Payments may be made in person by check or cash and are accepted during the hours listed above.  Payments can also be made by mail to: Town of Thompson Tax Receiver, PO Box 240, Monticello, New York 12701.  Please reference your SBL# (Section, Block and Lot) on your check.

The property tax bill contains levies for the Town, County, Fire District and any special districts.  In addition, if school or sewer bills are unpaid, they will be re-levied on the Property Tax Bill.

The Town of Thompson Tax Office does not collect School Taxes for the School District.  School tax bills are mailed in early September.  The due date is specified on the bill.  Please contact your school tax office with any questions you may have; Monticello Central School District at 845-794-1515 or online at Monticello, Liberty Central School District at 845-439-3557 or online at Liberty and Fallsburg Central School District at 845-434-6800 or online at Fallsburg.   As of November 15th all unpaid School Tax bills are turned over to Sullivan County, and are re-levied on the following years Property Tax Bill with an additional penalty.