Growth Metrics

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.
  • According to the latest figures from Q3 2025, Amphastar Pharmaceuticals' Tax Rate is 19.35%, which was up 41400.0% from 21.11% recorded in Q2 2025.
  • Over the past 5 years, Amphastar Pharmaceuticals' Tax Rate peaked at 46.86% during Q4 2024, and registered a low of 8.62% during Q1 2024.
  • For the 5-year period, Amphastar Pharmaceuticals' Tax Rate averaged around 24.65%, with its median value being 22.04% (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).
  • Quarter analysis of 5 years shows Amphastar Pharmaceuticals' Tax Rate stood at 26.49% in 2021, then soared by 67bps to 44.2% in 2022, then dropped by -19bps to 35.7% in 2023, then surged by 31bps to 46.86% in 2024, then crashed by -59bps to 19.35% in 2025.
  • Its Tax Rate stands at 19.35% for Q3 2025, versus 21.11% for Q2 2025 and 18.07% for Q1 2025.