Amphastar Pharmaceuticals (AMPH) Tax Rate (2013 - 2026)
Amphastar Pharmaceuticals' Tax Rate was 21.26% in Q2 2026, up 0.15 percentage points from 21.11% a year earlier but down 14.87 percentage points from the prior quarter.
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Analysis
Amphastar Pharmaceuticals (AMPH) Tax Rate (2013 - 2026) Analysis & Trends
On a trailing twelve-month basis, Amphastar Pharmaceuticals' Tax Rate was 23.01% through Jun 30, 2026, up 6.24 percentage points year-over-year; for FY2025, it was 20.65%, up 5.02 percentage points from FY2024.
- Tax Rate shows a five-year change of -55.69 percentage points (FY2020 to FY2025).
- In earlier years, Tax Rate was 15.64% in FY2024 (-2.94 pp), 18.58% in FY2023 (-1.66 pp), 20.23% in FY2022 (-4.29 pp) and 24.52% in FY2021 (-51.82 pp).
- Quarterly Tax Rate has moved between 8.62% (Q1 2024) and 36.13% (Q1 2026) over five years.
- Compared with a year earlier, Tax Rate has increased for four straight quarters, with an average year-over-year change of +4.22 percentage points over the last eight quarters.
- The best year-over-year quarter for Tax Rate over five years was Q1 2026 (a gain of 18.06 percentage points); the worst was Q2 2022 (a drop of 15.38 percentage points).
- Per Business Quant data, AMPH's Tax Rate in the three quarters before Q2 2026 was 36.13% (Q1 2026), 23.45% (Q4 2025) and 19.35% (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | Johnson & Johnson | 655.56 Bn | 574.09 Bn | 17.26 Bn | 17.98% |
| 2 | AbbVie | 470.94 Bn | 444.10 Bn | 12.70 Bn | 15.47% |
| 3 | Merck | 367.14 Bn | 321.57 Bn | 12.21 Bn | - |
| 4 | Novartis Ag | 280.33 Bn | 236.20 Bn | 11.24 Bn | - |
| 5 | Astrazeneca | 257.78 Bn | 231.34 Bn | 12.86 Bn | - |
| 6 | Amgen | 226.04 Bn | 181.44 Bn | 7.24 Bn | 14.20% |
| 7 | Gilead Sciences | 188.89 Bn | 163.01 Bn | 6.22 Bn | - |
| 8 | Pfizer | 163.75 Bn | 110.70 Bn | 10.94 Bn | - |
| 9 | Vertex Pharmaceuticals | 133.68 Bn | 105.69 Bn | 2.84 Bn | 20.98% |
| 10 | Amphastar Pharmaceuticals | 1.16 Bn | 23.86 Mn | 93.47 Mn | 21.26% |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 21.26% |
| Mar 31, 2026 | 36.13% |
| Dec 31, 2025 | 23.45% |
| Sep 30, 2025 | 19.35% |
| Jun 30, 2025 | 21.11% |
| Mar 31, 2025 | 18.07% |
| Dec 31, 2024 | 13.64% |
| Sep 30, 2024 | 15.21% |
| Jun 30, 2024 | 24.47% |
| Mar 31, 2024 | 8.62% |
| Dec 31, 2023 | 11.30% |
| Sep 30, 2023 | 22.04% |
| Jun 30, 2023 | 19.46% |
| Mar 31, 2023 | 20.11% |
| Dec 31, 2022 | 17.67% |
| Sep 30, 2022 | 29.03% |
| Jun 30, 2022 | 23.98% |
| Mar 31, 2022 | 14.04% |
| Dec 31, 2021 | 26.49% |
| Sep 30, 2021 | 17.76% |
API Access
Amphastar Pharmaceuticals Tax Rate API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=tax-rate&ticker=AMPH&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "tax-rate", "ticker": "AMPH", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=tax-rate&ticker=AMPH&period=max&api_key=YOUR_API_KEY");
const data = await res.json();