The Deadline Is Quickly Approaching For Washington County Tennessee Property Owners To Pay Their 2022 Tax Bills. Any Payments Made After The Period Will Be Subject To Penalties And Fees. Mailed Payments Must Be Postmarked February 28Th Or Before. You Can Pay Online At Washingtoncountytn.Org, By Phone, Or In Person At The Courthouse, Which Are Open Weekdays 8 To 4:30.