Amphastar Pharmaceuticals (AMPH) Tax Rate (2013 - 2026)

Amphastar Pharmaceuticals' Tax Rate history runs 14 years deep, the most recent figure standing at 36.13% for Q1 2026.

• In Q1 2026, Tax Rate rose 1806.0% year-over-year to 36.13%; the TTM figure through Mar 2026 stood at 90.23% (down 10770.0% YoY), while the FY2025 annual figure was 479.17%, down 49437.0% from the prior year.
• Tax Rate was 36.13% for Q1 2026 at Amphastar Pharmaceuticals, up from 7.71% in the prior quarter.
• In the past five years, Tax Rate ranged from a high of 36.13% in Q1 2026 to a low of 7.71% in Q4 2025.
• Historically, Tax Rate has averaged 17.94% across 5 years, with a median of 19.35% in 2025.
• The sharpest annual moves came in 2025 and 2026: Tax Rate tumbled 1986 bps in 2025, then soared 1806 bps in 2026.
• A 5-year view of Tax Rate shows it stood at 17.67% in 2022, then tumbled by 36 bps to 11.3% in 2023, then gained by 7 bps to 12.15% in 2024, then tumbled by 163 bps to 7.71% in 2025, then surged by 568 bps to 36.13% in 2026.
• The last three Tax Rate figures came in at 36.13% (Q1 2026), 7.71% (Q4 2025), and 19.35% (Q3 2025), per Business Quant data.