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Amphastar Pharmaceuticals (AMPH) Tax Rate (2016 - 2026)

Amphastar Pharmaceuticals has reported Tax Rate over the past 13 years, most recently at 56.86% for Q4 2025.

  • For Q4 2025, Tax Rate fell 6900.0% year-over-year to 56.86%; the TTM value through Dec 2025 reached 2.43%, down 1763.0%, while the annual FY2025 figure was 2.43%, 1763.0% down from the prior year.
  • Tax Rate for Q4 2025 was 56.86% at Amphastar Pharmaceuticals, down from 19.35% in the prior quarter.
  • Over five years, Tax Rate peaked at 39.35% in Q2 2021 and troughed at 56.86% in Q4 2025.
  • A 5-year average of 13.58% and a median of 18.71% in 2025 define the central range for Tax Rate.
  • Biggest five-year swings in Tax Rate: skyrocketed 3437bps in 2021 and later crashed -6900bps in 2025.
  • Year by year, Tax Rate stood at 12.92% in 2021, then plummeted by -166bps to 8.48% in 2022, then skyrocketed by 61bps to 3.32% in 2023, then soared by 465bps to 12.15% in 2024, then plummeted by -568bps to 56.86% in 2025.
  • Business Quant data shows Tax Rate for AMPH at 56.86% in Q4 2025, 19.35% in Q3 2025, and 21.11% in Q2 2025.