Alkermes (ALKS) Tax Rate (2010 - 2026)

Alkermes (ALKS) has 17 years of Tax Rate data on file, last reported at 7.43% in Q1 2026.

• On a quarterly basis, Tax Rate fell 1920.0% year-over-year to 7.43% in Q1 2026; TTM through Mar 2026 was 2.02%, a 337.0% increase from a year earlier, with the FY2025 full-year figure at 0.87%, up 102.0% from the prior year.
• Tax Rate for Q1 2026 stood at 7.43%, up from 60.0% in the prior quarter.
• Over the last five years, Tax Rate for ALKS reached as high as 23.38% in Q4 2022 and fell as low as 175.32% in Q4 2023.
• Historically, Tax Rate has averaged 6.98% across 5 years, with a median of 9.37% in 2022.
• Across the five-year window, Tax Rate tumbled 19870 bps in 2023 and jumped 14697 bps in 2024, its largest moves.
• Year by year, Tax Rate stood at 23.38% in 2022, then slumped by 850 bps to 175.32% in 2023, then jumped by 84 bps to 28.35% in 2024, then sank by 112 bps to 60.0% in 2025, then soared by 88 bps to 7.43% in 2026.
• Per Business Quant data, the three most recent Tax Rate figures were 7.43% in Q1 2026, 60.0% in Q4 2025, and 17.87% in Q3 2025.