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Biogen (BIIB) Change in Taxes (2016 - 2026)

Biogen has reported Change in Taxes over the past 13 years, most recently at $18.4 million for Q1 2026.

  • For Q1 2026, Change in Taxes fell 73.37% year-over-year to $18.4 million; the TTM value through Mar 2026 reached -$1.0 billion, down 773.43%, while the annual FY2025 figure was -$958.1 million, 1320.51% down from the prior year.
  • Change in Taxes for Q1 2026 was $18.4 million at Biogen, up from -$194.0 million in the prior quarter.
  • Over five years, Change in Taxes peaked at $101.9 million in Q1 2022 and troughed at -$603.8 million in Q2 2025.
  • A 5-year average of -$76.6 million and a median of -$32.4 million in 2023 define the central range for Change in Taxes.
  • On a YoY basis, Change in Taxes climbed as much as 3240.91% in 2025 and fell as far as 10878.18% in 2025.
  • Year by year, Change in Taxes stood at -$42.1 million in 2022, then tumbled by 337.53% to -$184.2 million in 2023, then skyrocketed by 108.9% to $16.4 million in 2024, then crashed by 1282.93% to -$194.0 million in 2025, then soared by 109.48% to $18.4 million in 2026.
  • Business Quant data shows Change in Taxes for BIIB at $18.4 million in Q1 2026, -$194.0 million in Q4 2025, and -$229.4 million in Q3 2025.