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Tax assistance:


Our Telephone Information Center is available to answer your calls Monday to Friday from 8:00 a.m. to 5:00 p.m. (except closed Wednesday from 8:00 a.m. to 9:00 a.m.).


Monday, Wednesday, Friday
8:30 am to 4:30 pm PT (Closed 11:30 am to 12:30 pm)
Mailing address

PO Box 47473
Olympia, WA 98504-7473
United States

Location address

1657 Fowler Street
Richland, WA 99352
United States

46.234125, -119.226614


From West and South I-82

  1. From I-82, take exit 102 onto I-182.
  2. From I-182, take exit 5 onto Hwy 240 East.
  3. Take the Columbia Center Blvd (not Columbia Dr) exit.
  4. Stay in the left lane.
  5. At the stop light, take a left onto Columbia Center Blvd and proceed across the overpass.
  6. Turn at first left onto Fowler Street.

From North and East (Spokane)

  1. From Hwy 395, go across the Blue Bridge.
  2. Follow the signs to Richland, which will turn into Hwy 240 West.
  3. Take the Columbia Center Blvd (not Columbia Dr) exit, stay in the right lane.
  4. At the stop light, turn right onto Columbia Center Blvd.
  5. Turn at first left onto Fowler Street.

Office is first building on the left.