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

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

  • Quarterly results put Tax Rate at 56.86% for Q4 2025, down 6900.0% from a year ago — trailing twelve months through Dec 2025 was 2.43% (down 1763.0% YoY), and the annual figure for FY2025 was 2.43%, down 1763.0%.
  • Tax Rate for Q4 2025 was 56.86% at Amphastar Pharmaceuticals, down from 19.35% in the prior quarter.
  • Over the last five years, Tax Rate for AMPH hit a ceiling of 39.35% in Q2 2021 and a floor of 56.86% in Q4 2025.
  • Median Tax Rate over the past 5 years was 18.71% (2025), compared with a mean of 13.58%.
  • Biggest five-year swings in Tax Rate: soared 3437bps in 2021 and later tumbled -6900bps in 2025.
  • Amphastar Pharmaceuticals' Tax Rate stood at 12.92% in 2021, then crashed by -166bps to 8.48% in 2022, then soared by 61bps to 3.32% in 2023, then surged by 465bps to 12.15% in 2024, then crashed by -568bps to 56.86% in 2025.
  • The last three reported values for Tax Rate were 56.86% (Q4 2025), 19.35% (Q3 2025), and 21.11% (Q2 2025) per Business Quant data.