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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.
  • Latest data reveals that Biogen reported Tax Rate of 12.68% as of Q4 2025, 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).
  • In the last 5 years, Biogen's Tax Rate surged by 1056600bps in 2021 and then crashed by -1004400bps in 2022.
  • Over the past 5 years, Biogen's Tax Rate (Quarter) stood at 109.43% in 2021, then plummeted by -92bps to 8.99% in 2022, then surged by 63bps to 14.64% in 2023, then tumbled by -42bps to 8.51% in 2024, then soared by 49bps to 12.68% in 2025.
  • Its last three reported values are 12.68% in Q4 2025, 16.29% for Q3 2025, and 14.68% during Q2 2025.