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Biogen (BIIB) Tax Rate (2016 - 2025)

Historic Tax Rate for Biogen (BIIB) over the last 17 years, with Q4 2025 value amounting to 12.68%.

  • Biogen's Tax Rate rose 41700.0% to 12.68% in Q4 2025 from the same period last year, while for Dec 2025 it was 16.94%, marking a year-over-year increase of 25700.0%. This contributed to the annual value of 16.94% for FY2025, which is 25700.0% up from last year.
  • As of Q4 2025, Biogen's Tax Rate stood at 12.68%, which was up 41700.0% from 16.29% recorded in Q3 2025.
  • Over the past 5 years, Biogen's Tax Rate peaked at 109.43% during Q4 2021, and registered a low of 70.28% during Q2 2021.
  • For the 5-year period, Biogen's Tax Rate averaged around 16.69%, with its median value being 15.02% (2024).
  • Per our database at Business Quant, Biogen's Tax Rate soared by 1056600bps in 2021 and then plummeted by -1004400bps in 2022.
  • Quarter analysis of 5 years shows Biogen's Tax Rate stood at 109.43% in 2021, then tumbled by -92bps to 8.99% in 2022, then soared by 63bps to 14.64% in 2023, then crashed by -42bps to 8.51% in 2024, then skyrocketed by 49bps to 12.68% in 2025.
  • Its Tax Rate was 12.68% in Q4 2025, compared to 16.29% in Q3 2025 and 14.68% in Q2 2025.