Clark County in Washington has a combined sales tax rate of 8.4% as of 2026. This includes the state rate of 6.5% plus a local county rate of 1.9%. With a population of 510,000, Clark County represents a significant market for businesses.
For a $500 purchase in Clark County, the sales tax would be $42.00, bringing the total to $542.00.
Business Compliance in Clark County
Businesses must register with the Washington State Department of Revenue to collect and remit sales tax. Filing frequency depends on sales volume. With a population of 510,000, Clark County offers significant market potential for businesses of all sizes.