Ionis Pharmaceuticals (IONS) Tax Rate (2015 - 2021)
Ionis Pharmaceuticals (IONS) posted Tax Rate of -1.11% for Q2 2026, down 1.10 percentage points from -0.02% a year earlier and down 0.88 percentage points from the prior quarter.
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Analysis
Ionis Pharmaceuticals (IONS) Tax Rate (2015 - 2021) Analysis & Trends
For the trailing twelve months through Jun 30, 2026, Tax Rate at Ionis Pharmaceuticals was -0.56%, down 2.82 percentage points year-over-year; for FY2025, it was -0.47%, down 1.81 percentage points from FY2024.
- Annual Tax Rate shows a five-year change of +256.08 percentage points (FY2020 to FY2025).
- In prior years, Ionis Pharmaceuticals' Tax Rate was 1.34% in FY2024 (+11.02 pp), -9.68% in FY2023 (-5.13 pp), -4.55% in FY2022 (-6.44 pp) and 1.89% in FY2021 (+258.44 pp).
- The Q2 2026 figure stands as the lowest quarterly Tax Rate since Q4 2023.
- On a year-over-year basis, Tax Rate has declined in each of the last four quarters, with an average year-over-year change of +29.68 percentage points over the last eight quarters.
- The strongest year-over-year quarter for Tax Rate in the past five years was Q4 2021, with a gain of 2340.88 percentage points; the weakest was Q4 2023, with a drop of 216.49 percentage points.
- According to Business Quant data, Tax Rate for the three prior quarters was -0.24% (Q1 2026), -0.65% (Q4 2025) and -0.17% (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | Johnson & Johnson | 645.01 Bn | 563.54 Bn | 17.26 Bn | 17.98% |
| 2 | AbbVie | 465.23 Bn | 438.39 Bn | 12.70 Bn | 15.47% |
| 3 | Merck | 368.40 Bn | 322.83 Bn | 12.21 Bn | - |
| 4 | Novartis Ag | 278.02 Bn | 233.89 Bn | 11.24 Bn | - |
| 5 | Astrazeneca | 254.57 Bn | 228.13 Bn | 12.86 Bn | - |
| 6 | Amgen | 229.02 Bn | 184.42 Bn | 7.24 Bn | 14.20% |
| 7 | Gilead Sciences | 187.74 Bn | 161.85 Bn | 6.22 Bn | - |
| 8 | Pfizer | 163.75 Bn | 110.70 Bn | 10.94 Bn | - |
| 9 | Vertex Pharmaceuticals | 133.45 Bn | 105.45 Bn | 2.84 Bn | 20.98% |
| 10 | Ionis Pharmaceuticals | 7.60 Bn | -1.29 Bn | 265.21 Mn | - |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Dec 31, 2021 | 0.16% |
| Dec 31, 2019 | 18.37% |
| Mar 31, 2019 | 25.46% |
| Dec 31, 2016 | 5.34% |
| Jun 30, 2015 | 2.17% |
API Access
Ionis Pharmaceuticals Tax Rate API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=tax-rate&ticker=IONS&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "tax-rate", "ticker": "IONS", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=tax-rate&ticker=IONS&period=max&api_key=YOUR_API_KEY");
const data = await res.json();