California Water Service (CWT) Tax Rate (2009 - 2026)

California Water Service's Tax Rate history runs 18 years deep, the most recent figure standing at 30.48% for Q2 2026.

• In Q2 2026, Tax Rate rose 591.0% year-over-year to 30.48%; the TTM figure through Jun 2026 stood at 23.07% (down 278.0% YoY), while the FY2025 annual figure was 18.43%, down 694.0% from the prior year.
• Tax Rate for Q2 2026 stood at 30.48%, up from 378.55% in the prior quarter.
• The five-year high for Tax Rate was 55.33% in Q2 2023, with the low at 378.55% in Q1 2026.
• The 5-year median for Tax Rate is 19.94% (2023), against an average of 10.35%.
• The sharpest annual moves came in 2022 and 2026: Tax Rate jumped 5555 bps in 2022, then plunged 41946 bps in 2026.
• California Water Service's Tax Rate stood at 2.06% in 2022, then jumped by 413 bps to 6.43% in 2023, then plunged by 393 bps to 18.85% in 2024, then slumped by 748 bps to 159.8% in 2025, then soared by 119 bps to 30.48% in 2026.
• Business Quant data shows CWT's Tax Rate at 30.48% in Q2 2026, 378.55% in Q1 2026, and 159.8% in Q4 2025.