Biogen (BIIB) Tax Rate (2009 - 2026)
Biogen (BIIB) recorded Tax Rate of 26.36% in Q2 2026, up 11.68 percentage points from 14.68% a year earlier and up 10.95 percentage points from the prior quarter.
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Analysis
Biogen (BIIB) Tax Rate (2009 - 2026) Analysis & Trends
On a TTM basis, Biogen's Tax Rate came in at 17.48% as of Jun 30, 2026, up 2.62 percentage points year-over-year; for FY2025, it was 16.94%, up 2.57 percentage points from FY2024.
- Annual Tax Rate has a five-year change of -2.72 percentage points (FY2020 to FY2025).
- Across earlier years, Tax Rate came in at 14.37% in FY2024 (+3.93 pp), 10.43% in FY2023 (-7.18 pp), 17.62% in FY2022 (+14.61 pp) and 3.01% in FY2021 (-16.65 pp).
- The Q2 2026 figure is the highest quarterly Tax Rate since Q3 2023.
- On a year-over-year basis, Tax Rate rose in four of the last eight quarters, with an average year-over-year change of -3.42 percentage points.
- Peak year-over-year performance for Tax Rate in the last five years was a gain of 105.66 percentage points in Q4 2021, against a drop of 100.44 percentage points in Q4 2022 at the low end.
- Per Business Quant, the preceding three quarters came in at 15.41% (Q1 2026), 12.68% (Q4 2025) and 16.29% (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | Eli Lilly | 1,076.25 Bn | 1,044.84 Bn | 19.71 Bn | 23.27% |
| 2 | Johnson & Johnson | 617.18 Bn | 535.70 Bn | 17.26 Bn | 17.98% |
| 3 | AbbVie | 464.58 Bn | 437.73 Bn | 12.70 Bn | 15.47% |
| 4 | Merck | 356.04 Bn | 310.47 Bn | 12.21 Bn | - |
| 5 | Novartis Ag | 269.07 Bn | 224.94 Bn | 11.24 Bn | - |
| 6 | Astrazeneca | 243.21 Bn | 216.77 Bn | 12.86 Bn | - |
| 7 | Amgen | 217.88 Bn | 173.28 Bn | 7.24 Bn | 14.20% |
| 8 | Gilead Sciences | 179.62 Bn | 153.74 Bn | 6.22 Bn | - |
| 9 | Pfizer | 158.45 Bn | 105.40 Bn | 10.94 Bn | - |
| 10 | Biogen | 32.49 Bn | 19.14 Bn | 1.96 Bn | 26.36% |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 26.36% |
| Mar 31, 2026 | 15.41% |
| Sep 30, 2025 | 16.29% |
| Jun 30, 2025 | 14.68% |
| Mar 31, 2025 | 22.72% |
| Dec 31, 2024 | 8.51% |
| Sep 30, 2024 | 13.86% |
| Jun 30, 2024 | 16.47% |
| Mar 31, 2024 | 15.36% |
| Dec 31, 2023 | 14.64% |
| Jun 30, 2023 | 16.21% |
| Mar 31, 2023 | 11.57% |
| Dec 31, 2022 | 8.99% |
| Sep 30, 2022 | 17.23% |
| Jun 30, 2022 | 17.07% |
| Mar 31, 2022 | 36.15% |
| Dec 31, 2021 | 109.43% |
| Mar 31, 2021 | 9.46% |
| Dec 31, 2020 | 3.77% |
| Sep 30, 2020 | 25.14% |
API Access
Biogen 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=BIIB&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "tax-rate", "ticker": "BIIB", "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=BIIB&period=max&api_key=YOUR_API_KEY");
const data = await res.json();