Ardelyx (ARDX) Tax Rate (2013 - 2026)

Ardelyx's (ARDX) quarterly Tax Rate came in at 0.02% in Q1 2026, up 211.0% YoY from 0.01% in Q1 2025, and up 98.78% on a QoQ basis from 1.75% in Q4 2025.

Ardelyx (ARDX) Tax Rate (2013 - 2026) Analysis & Trends

Ardelyx (ARDX) has 13 years of Tax Rate data on file, last reported at 0.02% in 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 rose to 0.02% in Q1 2026, from 1.75% in the prior quarter.
  • In the past five years, Tax Rate ranged from a high of 2.93% in Q3 2023 to a low of 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 sank 854 bps — and 2026, when it soared 211 bps.
  • Tracing ARDX's Tax Rate over 5 years: stood at 0.02% in 2022, then sank by 5150 bps to 1.17% in 2023, then soared by 164 bps to 0.75% in 2024, then slumped by 334 bps to 1.75% in 2025, then jumped by 99 bps to 0.02% in 2026.
  • The last three Tax Rate figures came in at 0.02% (Q1 2026), 1.75% (Q4 2025), and 11.76% (Q3 2025), per Business Quant data.

Peer Comparison

# Company Market Cap Enterprise Value Gross Profit (Qtr) Tax Rate (Qtr)
1 Vertex Pharmaceuticals 128.13 Bn 120.28 Bn 2.84 Bn 20.98%
2 Regeneron Pharmaceuticals 112.33 Bn 104.33 Bn 3.93 Bn 15.11%
3 Argenx Se 53.24 Bn 48.05 Bn 1.41 Bn 10.91%
4 Revolution Medicines 43.64 Bn 43.64 Bn - -
5 BeOne Medicines 39.27 Bn 34.17 Bn 1.53 Bn 24.15%
6 MindWalk Holdings 35.32 Bn 35.31 Bn 1.82 Bn -9.47%
7 Royalty Pharma 33.72 Bn 35.84 Bn - -
8 Alnylam Pharmaceuticals 30.58 Bn 27.27 Bn 992.69 Mn 7.49%
9 Insmed 27.01 Bn 25.85 Bn 358.27 Mn -16.71%
10 Ardelyx 1.01 Bn 729.71 Mn 115.12 Mn -0.66%

Historic Data

Download Data
DateValue
Jun 30, 2026 -0.66%
Jun 30, 2026 -0.66%
Jun 30, 2026 -0.66%
Mar 31, 2026 -0.02%
Mar 31, 2026 -0.02%
Mar 31, 2026 -0.02%
Dec 31, 2025 -1.75%
Dec 31, 2025 -1.75%
Dec 31, 2025 -1.75%
Sep 30, 2025 -11.76%
Sep 30, 2025 -11.76%
Sep 30, 2025 -11.76%
Jun 30, 2025 -0.01%
Jun 30, 2025 -0.01%
Jun 30, 2025 -0.01%
Mar 31, 2025 -2.13%
Mar 31, 2025 -2.13%
Mar 31, 2025 -2.13%
Dec 31, 2024 0.75%
Dec 31, 2024 0.75%