Aon PLC
NYSE: AON · FINANCIAL SERVICES · INSURANCE BROKERS
Updated 2026-06-05
Aon PLC (AON) Financial statements
SEC filings — annual and quarterly data.
Income statement — annual
| Item | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue | $6.88B | $7.36B | $7.53B | $7.59B | $8.51B | $11.29B | $11.51B | $11.81B | $12.04B | $9.48B | $9.41B | $10.00B | $10.77B | $11.01B | $11.07B | $12.19B | $12.48B | $13.38B | $15.70B | $17.18B |
| Revenue growth (YoY) | — | +6.9% | +2.3% | +0.9% | +12.1% | +32.6% | +2.0% | +2.6% | +1.9% | -21.3% | -0.7% | +6.3% | +7.7% | +2.3% | +0.5% | +10.2% | +2.3% | +7.2% | +17.4% | +9.4% |
| Cost of revenue | $7.53B | $6.00B | $6.10B | $5.91B | $5.10B | $6.57B | $6.71B | $6.95B | $7.01B | $5.61B | $5.51B | $6.00B | $6.10B | $6.05B | $5.91B | $6.74B | $6.48B | $6.90B | $8.28B | $8.98B |
| Gross profit | $6.88B | $7.36B | $7.53B | $7.59B | $3.42B | $4.72B | $4.80B | $4.87B | $5.03B | $3.88B | $3.90B | $4.00B | $4.67B | $4.96B | $5.16B | $5.46B | $6.00B | $6.47B | $7.42B | $8.20B |
| Gross margin | 100.0% | 100.0% | 100.0% | 100.0% | 40.1% | 41.8% | 41.7% | 41.2% | 41.8% | 40.9% | 41.4% | 40.0% | 43.3% | 45.0% | 46.6% | 44.7% | 48.1% | 48.4% | 47.2% | 47.7% |
| R&D | — | — | — | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | — | $0.00 | $0.00 | $0.00 | $0.00 | — | — |
| SG&A | $5.86B | $6.05B | $6.59B | $6.57B | $2.17B | $3.12B | $3.21B | $3.20B | $3.06B | $1.56B | $1.55B | $1.71B | $1.87B | $1.72B | $1.51B | $2.54B | $1.74B | $1.79B | $2.01B | $1.56B |
| Operating income | $795.00M | $1.16B | $940.00M | $1.02B | $1.24B | $1.60B | $1.60B | $1.67B | $1.97B | $1.59B | $1.81B | $1.06B | $1.54B | $2.17B | $2.78B | $2.09B | $3.67B | $3.79B | $3.83B | $4.34B |
| Operating margin | 11.6% | 15.8% | 12.5% | 13.4% | 14.6% | 14.1% | 13.9% | 14.1% | 16.3% | 16.7% | 19.2% | 10.7% | 14.3% | 19.7% | 25.1% | 17.1% | 29.4% | 28.3% | 24.4% | 25.3% |
| EBITDA | $1.04B | $1.35B | $1.23B | $1.31B | $1.55B | $2.21B | $2.26B | $2.38B | $2.61B | $2.04B | $2.00B | $1.86B | $2.29B | $2.74B | $3.21B | $2.58B | $3.83B | $3.79B | $4.94B | $5.35B |
| EBITDA margin | 15.1% | 18.4% | 16.3% | 17.3% | 18.2% | 19.6% | 19.7% | 20.2% | 21.7% | 21.5% | 21.3% | 18.6% | 21.3% | 24.9% | 29.0% | 21.2% | 30.7% | 28.3% | 31.4% | 31.1% |
| EBIT | $792.00M | $1.15B | $1.00B | $1.07B | $1.24B | $1.63B | $1.61B | $1.75B | $2.02B | $1.70B | $1.68B | $967.00M | $1.52B | $2.18B | $2.80B | $2.25B | $3.56B | $3.79B | $4.25B | $4.38B |
| Interest expense | $129.00M | $138.00M | $126.00M | $122.00M | $182.00M | $245.00M | $228.00M | $210.00M | $255.00M | $273.00M | $282.00M | $282.00M | $278.00M | $307.00M | $334.00M | $322.00M | $406.00M | $484.00M | $788.00M | $815.00M |
| Income tax | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Effective tax rate | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| Net income | $720.00M | $864.00M | $1.46B | $747.00M | $706.00M | $979.00M | $993.00M | $1.11B | $1.40B | $1.39B | $1.40B | $1.23B | $1.13B | $1.53B | $1.97B | $1.25B | $2.59B | $2.56B | $2.65B | $3.69B |
| Net income growth (YoY) | — | +20.0% | +69.2% | -48.9% | -5.5% | +38.7% | +1.4% | +12.1% | +25.5% | -0.9% | +0.8% | -12.2% | -7.5% | +35.1% | +28.5% | -36.3% | +106.3% | -1.0% | +3.5% | +39.2% |
| Profit margin | 10.5% | 11.7% | 19.4% | 9.8% | 8.3% | 8.7% | 8.6% | 9.4% | 11.6% | 14.6% | 14.8% | 12.3% | 10.5% | 13.9% | 17.8% | 10.3% | 20.7% | 19.2% | 16.9% | 21.5% |
Frequently asked questions
What is Aon PLC's revenue?
Aon PLC's trailing twelve-month revenue is $17.49B, and consensus projects about $23.36B by 2030. Revenue is the top line the whole model builds on, and at this scale the question shifts from how fast it grows to whether margins hold as it compounds.
How profitable is AON?
In its most recent fiscal year, AON ran a gross margin of 47.70%, an operating margin of 25.28%, and a net margin of 21.51%. Margins this high mean most of each extra dollar of revenue drops through to profit, which is the signature of real pricing power.
How much free cash flow does AON generate?
AON produced $3.22B in free cash flow in its most recent fiscal year. Free cash flow is what is left after running and reinvesting in the business, and it is the cash that actually funds buybacks, dividends, and a stronger balance sheet.
Is AON's balance sheet healthy?
AON holds $1.20B in cash and equivalents against $14.66B in long-term debt, on $9.55B of shareholder equity. That debt is best read against the cash flow the business throws off each year.