Transportation Development Tax to increase July 1, 2021

For Immediate Release: Thursday, April 29, 2021

Sponsored by: Department of Land Use and Transportation

Washington County Transportation Development Tax (TDT) rates will increase by 3.824%, effective July 1.

Once the increase takes effect, the TDT rate for a single-family detached home, for example, will be $9,623 – a $354 increase over the FY 2020-21 rate of $9,269.

TDT is based on the average estimated traffic generated by new development of that type and is paid by developers to fund transportation projects, including road improvements, sidewalks, bike lanes and transit upgrades such as bus shelters. TDT rates are adjusted annually based on a five-year rolling average of road construction, labor and right-of-way costs.

The rate increase was approved April 20 by the Board of Commissioners. County code calls for the Board to act on TDT adjustments annually before May 1.

Visit Transportation Development Tax/TDT or the Transportation Development Tax Rate Schedule for more information.

Media Contact:

Courtney Threewitt
971-724-7377
courtney_threewitt@co.washington.or.us