The combined sales tax rate in Dewey, Oklahoma is
8.9% on general merchandise, and
4.4% on groceries.
Rate breakdown
Portion
General
Groceries
Oklahoma state
4.5%
0%
Dewey (city)
3.4%
3.4%
Washington County
1%
1%
Combined
8.9%
4.4%
Combined rate = 4.5% Oklahoma
state rate + municipal rate + county rate. The state rate has been 4.5% since
May 1, 1990. Food and food ingredients are exempt from the state rate effective
August 29, 2024 (HB 1955); local city and county sales taxes still apply. Prepared food,
restaurant meals, alcohol, and dietary supplements remain taxable at the full rate.