Ardelyx (ARDX) Tax Rate (2013 - 2026)

Ardelyx's Tax Rate history runs 13 years deep, the most recent figure standing at 0.02% for Q1 2026.

• Quarterly Tax Rate rose 211.0% year-over-year to 0.02% in Q1 2026, while the trailing twelve-month figure through Mar 2026 was 0.2% (up 170.0% YoY) and the FY2025 annual result came in at 1.6%, down 91.0% from the prior year.
• Tax Rate was 0.02% for Q1 2026 at Ardelyx, up from 1.75% in the prior quarter.
• Across five years, Tax Rate topped out at 2.93% in Q3 2023 and bottomed at 11.76% in Q3 2025.
• A 5-year average of 1.41% and a median of 0.23% in 2024 frame the typical range for Tax Rate.
• Annual changes were most pronounced in 2024 — Tax Rate plunged 854 bps — and 2026, when it soared 211 bps.
• Ardelyx's Tax Rate stood at 0.02% in 2022, then tumbled by 5150 bps to 1.17% in 2023, then surged by 164 bps to 0.75% in 2024, then plunged by 334 bps to 1.75% in 2025, then soared by 99 bps to 0.02% in 2026.
• Business Quant data shows ARDX's Tax Rate at 0.02% in Q1 2026, 1.75% in Q4 2025, and 11.76% in Q3 2025.