Aon (AON) Tax Rate (2009 - 2026)
Aon (AON) recorded Tax Rate of 21.96% in Q2 2026, up 6.46 percentage points from 15.50% a year earlier and up 1.74 percentage points from the prior quarter.
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Analysis
Aon (AON) Tax Rate (2009 - 2026) Analysis & Trends
On a TTM basis, Aon's Tax Rate came in at 21.74% as of Jun 30, 2026, up 2.67 percentage points year-over-year; for FY2025, it was 21.20%, down 0.23 percentage points from FY2024.
- Annual Tax Rate has a five-year change of +3.03 percentage points (FY2020 to FY2025).
- Across earlier years, Tax Rate came in at 21.43% in FY2024 (+4.36 pp), 17.07% in FY2023 (+0.91 pp), 16.16% in FY2022 (-16.10 pp) and 32.26% in FY2021 (+14.10 pp).
- Quarterly Tax Rate has ranged from -2.65% in Q3 2021 to 23.24% in Q1 2024 over the past five years.
- On a year-over-year basis, Tax Rate rose in five of the last eight quarters, with an average year-over-year change of +0.85 percentage points.
- Peak year-over-year performance for Tax Rate in the last five years was a gain of 20.69 percentage points in Q3 2022, against a drop of 25.18 percentage points in Q3 2021 at the low end.
- Per Business Quant, the preceding three quarters came in at 20.22% (Q1 2026), 22.86% (Q4 2025) and 21.27% (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | Berkshire Hathaway | 1,083.69 Bn | -333.79 Bn | 55.86 Bn | 19.62% |
| 2 | Chubb | 127.81 Bn | 79.86 Bn | 9.13 Bn | 20.47% |
| 3 | Progressive | 121.79 Bn | 97.63 Bn | 9.04 Bn | 21.34% |
| 4 | Marsh & Mclennan Companies | 80.80 Bn | 72.54 Bn | - | 24.15% |
| 5 | Travelers Companies | 75.76 Bn | 52.01 Bn | 6.23 Bn | 20.20% |
| 6 | Manulife Financial | 74.06 Bn | 75.27 Bn | - | - |
| 7 | Metlife | 61.12 Bn | -45.36 Bn | 7.82 Bn | 24.73% |
| 8 | Arthur J. Gallagher | 58.82 Bn | 53.25 Bn | - | 21.74% |
| 9 | Allstate | 57.81 Bn | 19.06 Bn | 8.73 Bn | 21.03% |
| 10 | Aon | 57.70 Bn | 50.94 Bn | - | 21.96% |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 21.96% |
| Mar 31, 2026 | 20.22% |
| Dec 31, 2025 | 22.86% |
| Sep 30, 2025 | 21.27% |
| Jun 30, 2025 | 15.50% |
| Mar 31, 2025 | 21.44% |
| Dec 31, 2024 | 17.62% |
| Sep 30, 2024 | 20.94% |
| Jun 30, 2024 | 22.92% |
| Mar 31, 2024 | 23.24% |
| Dec 31, 2023 | 16.75% |
| Sep 30, 2023 | 16.61% |
| Jun 30, 2023 | 12.61% |
| Mar 31, 2023 | 19.60% |
| Dec 31, 2022 | 6.06% |
| Sep 30, 2022 | 18.04% |
| Jun 30, 2022 | 18.80% |
| Mar 31, 2022 | 19.63% |
| Dec 31, 2021 | 15.73% |
| Jun 30, 2021 | 34.06% |
API Access
Aon 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=AON&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "tax-rate", "ticker": "AON", "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=AON&period=max&api_key=YOUR_API_KEY");
const data = await res.json();