Sullivan County Residents Who’ve Not Yet Paid 2016 County Property Taxes Have Until Today To Pay Up Or Pay Late Fees. Full Payment Must Be Received By The Trustee’s Office By Close Of Business Today. Penalties Will Be Charged Beginning March 1st At A Rate Of 1.5 Percent Per Month. You Can View Your Taxes And Pay Them Online By Credit Card, Debit Card Or Check At Tennesseetrustee.Com