Amentum Holdings (AMTM) Tax Rate (2024 - 2026)
Amentum Holdings' Tax Rate was 29.79% in fiscal Q3 2026 (quarter ended Jul 3, 2026), down 78.55 percentage points from 108.33% a year earlier and down 0.98 percentage points from the prior quarter.
Amentum Holdings (AMTM) Tax Rate (2024 - 2026) Analysis & Trends
On a trailing twelve-month basis, Amentum Holdings' Tax Rate was 25.56% through Jul 3, 2026, up 88.52 percentage points year-over-year; for FY2025 (ended Oct 3, 2025), it came in at 48.70%, up 16.18 percentage points from FY2024.
- Tax Rate has now increased for three consecutive fiscal years, with a three-year change of +70.57 percentage points (FY2022 to FY2025).
- In earlier fiscal years, Tax Rate was 32.52% in FY2024 (+26.93 pp), 5.59% in FY2023 (+27.46 pp) and -21.88% in FY2022.
- Quarterly Tax Rate has moved between -90.91% (fiscal Q2 2024) and 140.74% (fiscal Q4 2024) over five years.
- Compared with a year earlier, Tax Rate has declined for four straight quarters, with an average year-over-year change of +14.03 percentage points over the last seven quarters.
- Per Business Quant data, AMTM's Tax Rate in the three fiscal quarters before Q3 2026 was 30.77% (Q2 2026), 31.25% (Q1 2026) and -8.82% (Q4 2025).
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | General Electric | 330.06 Bn | 284.06 Bn | 4.68 Bn | 14.53% |
| 2 | Rtx | 252.10 Bn | 225.31 Bn | 5.13 Bn | 17.98% |
| 3 | Boeing | 148.40 Bn | 55.10 Bn | 2.41 Bn | - |
| 4 | Lockheed Martin | 118.20 Bn | 104.92 Bn | 2.45 Bn | 15.70% |
| 5 | Howmet Aerospace | 92.39 Bn | 87.99 Bn | 951.00 Mn | 17.72% |
| 6 | General Dynamics | 89.92 Bn | 77.03 Bn | 2.18 Bn | 17.56% |
| 7 | Motorola Solutions | 73.84 Bn | 70.20 Bn | 1.68 Bn | 24.80% |
| 8 | Northrop Grumman | 71.73 Bn | 60.97 Bn | 2.12 Bn | 6.34% |
| 9 | Honeywell International | 66.60 Bn | 19.04 Bn | 3.65 Bn | 20.96% |
| 10 | Amentum Holdings | 4.43 Bn | 2.96 Bn | 360.00 Mn | 29.79% |
Historic Data
| Date | Value |
|---|---|
| Jul 3, 2026 | 29.79% |
| Apr 3, 2026 | 30.77% |
| Jan 2, 2026 | 31.25% |
| Jun 27, 2025 | 108.33% |
| Mar 28, 2025 | 91.67% |
| Dec 27, 2024 | 53.33% |
Amentum Holdings 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=AMTM&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "tax-rate", "ticker": "AMTM", "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=AMTM&period=max&api_key=YOUR_API_KEY");
const data = await res.json();