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Amphastar Pharmaceuticals (AMPH) Tax Rate (2016 - 2025)

Historic Tax Rate for Amphastar Pharmaceuticals (AMPH) over the last 13 years, with Q3 2025 value amounting to 19.35%.

  • Amphastar Pharmaceuticals' Tax Rate rose 41400.0% to 19.35% in Q3 2025 from the same period last year, while for Sep 2025 it was 29.19%, marking a year-over-year increase of 78400.0%. This contributed to the annual value of 23.99% for FY2024, which is 11300.0% down from last year.
  • Per Amphastar Pharmaceuticals' latest filing, its Tax Rate stood at 19.35% for Q3 2025, which was up 41400.0% from 21.11% recorded in Q2 2025.
  • Amphastar Pharmaceuticals' Tax Rate's 5-year high stood at 46.86% during Q4 2024, with a 5-year trough of 8.62% in Q1 2024.
  • Its 5-year average for Tax Rate is 24.65%, with a median of 22.04% in 2023.
  • Within the past 5 years, the most significant YoY rise in Amphastar Pharmaceuticals' Tax Rate was 343700bps (2021), while the steepest drop was -166900bps (2021).
  • Over the past 5 years, Amphastar Pharmaceuticals' Tax Rate (Quarter) stood at 26.49% in 2021, then surged by 67bps to 44.2% in 2022, then fell by -19bps to 35.7% in 2023, then skyrocketed by 31bps to 46.86% in 2024, then tumbled by -59bps to 19.35% in 2025.
  • Its last three reported values are 19.35% in Q3 2025, 21.11% for Q2 2025, and 18.07% during Q1 2025.