Atherton, CA Sales Tax Rate

The combined sales tax rate in Atherton, California is 9.375% (7.25% state and 2.125% county). Calculate the sales tax on any purchase in Atherton. Rates effective October 2026.

State tax

7.25%

County tax (San Mateo)

2.125%

City tax (Atherton)

0%

Special district tax

0%

Combined rate

9.375%

Source: California CDTFA, rates effective October 1, 2026. Effective October 2026.