Biogen (BIIB) Change in Taxes (2014 - 2026)

Biogen's Change in Taxes history runs 13 years deep, the most recent figure standing at $13.8 million for Q2 2026.

• In Q2 2026, Change in Taxes rose 102.29% year-over-year to $13.8 million; the TTM figure through Jun 2026 stood at -$391.2 million (up 12.78% YoY), while the FY2025 annual figure was -$958.1 million, down 1320.51% from the prior year.
• Change in Taxes for Q2 2026 stood at $13.8 million, down from $18.4 million in the prior quarter.
• The five-year high for Change in Taxes was $101.9 million in Q1 2022, with the low at -$603.8 million in Q2 2025.
• The 5-year median for Change in Taxes is -$19.0 million (2023), against an average of -$71.6 million.
• Peak annual rise in Change in Taxes reached 3240.91% in 2025, while the deepest fall reached 10878.18% in 2025.
• Biogen's Change in Taxes stood at -$42.1 million in 2022, then slumped by 337.53% to -$184.2 million in 2023, then jumped by 108.9% to $16.4 million in 2024, then plunged by 1282.93% to -$194.0 million in 2025, then jumped by 107.11% to $13.8 million in 2026.
• Business Quant data shows BIIB's Change in Taxes at $13.8 million in Q2 2026, $18.4 million in Q1 2026, and -$194.0 million in Q4 2025.