Ionis Pharmaceuticals (IONS) Tax Rate (2009 - 2026)
Ionis Pharmaceuticals (IONS) posted quarterly Tax Rate of 1.11% for Q2 2026, down 110.0% year-over-year from 11.15% in Q2 2025, and down 372.06% quarter-over-quarter from 0.24% in Q1 2026.
Ionis Pharmaceuticals (IONS) Tax Rate (2009 - 2026) Analysis & Trends
Ionis Pharmaceuticals' Tax Rate history runs 18 years deep, the most recent figure standing at 1.11% for Q2 2026.
- In Q2 2026, Tax Rate fell 110.0% year-over-year to 1.11%; the TTM figure through Jun 2026 stood at 13.9% (down 2123.0% YoY), while the FY2025 annual figure was 20.91%, down 6.0% from the prior year.
- Tax Rate for Q2 2026 stood at 1.11%, down from 0.24% in the prior quarter.
- The five-year high for Tax Rate was 2734.63% in Q4 2023, with the low at 10.13% in Q2 2023.
- The 5-year median for Tax Rate is 0.13% (2025), against an average of 164.23%.
- The sharpest annual moves came in 2023 and 2024: Tax Rate surged 260569 bps in 2023, then sank 264815 bps in 2024.
- Ionis Pharmaceuticals' Tax Rate stood at 128.94% in 2022, then jumped by 2021 bps to 2734.63% in 2023, then plunged by 97 bps to 86.47% in 2024, then slumped by 60 bps to 34.87% in 2025, then sank by 103 bps to 1.11% in 2026.
- Business Quant data shows IONS's Tax Rate at 1.11% in Q2 2026, 0.24% in Q1 2026, and 34.87% in Q4 2025.
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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 | Ionis Pharmaceuticals | 9.48 Bn | 7.43 Bn | 265.21 Mn | -1.11% |
Historic Data
Download Data| Date | Value |
|---|---|
| Jun 30, 2026 | -1.11% |
| Jun 30, 2026 | -1.11% |
| Jun 30, 2026 | -1.11% |
| Mar 31, 2026 | -0.24% |
| Mar 31, 2026 | -0.24% |
| Mar 31, 2026 | -0.24% |
| Dec 31, 2025 | 34.87% |
| Dec 31, 2025 | 34.87% |
| Dec 31, 2025 | 34.87% |
| Sep 30, 2025 | -0.17% |
| Sep 30, 2025 | -0.17% |
| Sep 30, 2025 | -0.17% |
| Jun 30, 2025 | -0.02% |
| Jun 30, 2025 | -0.02% |
| Jun 30, 2025 | -0.02% |
| Mar 31, 2025 | -0.08% |
| Mar 31, 2025 | -0.08% |
| Mar 31, 2025 | -0.08% |
| Dec 31, 2024 | 86.47% |
| Dec 31, 2024 | 86.47% |