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Amphastar Pharmaceuticals (AMPH) Tax Rate: 2012-2024

Historic Tax Rate for Amphastar Pharmaceuticals (AMPH) over the last 12 years, with Dec 2024 value amounting to 23.99%.

  • Amphastar Pharmaceuticals' Tax Rate rose 414.00% 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 784.00%. This contributed to the annual value of 23.99% for FY2024, which is 113.00% down from last year.
  • According to the latest figures from FY2024, Amphastar Pharmaceuticals' Tax Rate is 23.99%, which was down 4.50% from 25.12% recorded in FY2023.
  • Amphastar Pharmaceuticals' 5-year Tax Rate high stood at 76.34% for FY2020, and its period low was 23.99% during FY2024.
  • Over the past 3 years, Amphastar Pharmaceuticals' median Tax Rate value was 25.12% (recorded in 2023), while the average stood at 26.68%.
  • In the last 5 years, Amphastar Pharmaceuticals' Tax Rate surged by 5,854bps in 2020 and then plummeted by 5,182bps in 2021.
  • Yearly analysis of 5 years shows Amphastar Pharmaceuticals' Tax Rate stood at 76.34% in 2020, then tumbled by 5,182bps to 24.52% in 2021, then spiked by 642bps to 30.94% in 2022, then tumbled by 582bps to 25.12% in 2023, then tumbled by 113bps to 23.99% in 2024.