Aon plc (AON) Revenue History
Annual and quarterly revenue from 2014 to 2025
Compound Annual Growth Rate (CAGR)
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AON Revenue Growth
Revenue Breakdown (FY 2025)
AON's revenue distribution by segment and geography for fiscal year 2025
By Product/Segment
By Geography
AON Revenue Analysis (2014–2025)
As of May 8, 2026, Aon plc (AON) generated trailing twelve-month (TTM) revenue of $17.49 billion, reflecting solid growth of +6.4% year-over-year. The most recent quarter (Q1 2026) recorded $5.03 billion in revenue, up 17.1% sequentially.
Looking at the longer-term picture, AON's 5-year compound annual growth rate (CAGR) stands at +9.2%, indicating steady revenue expansion. The company achieved its highest annual revenue of $17.18 billion in 2025, representing a new all-time high.
Revenue diversification analysis shows AON's business is primarily driven by Risk Capital Segment (66%), and Human Capital Segment (34%). With over half of revenue concentrated in Risk Capital Segment, the company maintains significant focus in this area while developing other growth vectors.
When compared to Financial Services sector peers including MMC (+10.5% YoY), WTW (+0.9% YoY), and AJG (+20.7% YoY), AON has underperformed the peer group in terms of revenue growth. Compare AON vs MMC →
AON Revenue vs Peers
Revenue metrics vs comparable public companies
| Company | TTM Revenue | YoY Growth | 5Y CAGR | Op. Margin | Compare |
|---|---|---|---|---|---|
| AONCurrent | $17.5B | +6.4% | +9.2% | 25.3% | |
 MMC | $24.5B | +10.5% | +8.0% | 23.8% | |
 WTW | $9.7B | +0.9% | +2.4% | 23.0% | |
 AJG | $13.9B | +20.7% | +14.7% | 18.3% | |
 BRO | $6.0B | +33.5% | +18.0% | 28.5% | |
 HIG | $28.3B | +7.3% | +6.8% | 16.8% |
AON Historical Revenue Data (2014–2025)
| Year | Revenue | YoY % | Gross Profit | Gross Margin | Op. Income | Op. Margin |
|---|---|---|---|---|---|---|
| 2025 | $17.18B | +9.4% | $8.20B | 47.7% | $4.34B | 25.3% |
| 2024 | $15.70B | +17.4% | $7.42B | 47.2% | $3.83B | 24.4% |
| 2023 | $13.38B | +7.2% | $6.47B | 48.4% | $3.79B | 28.3% |
| 2022 | $12.48B | +2.3% | $6.00B | 48.1% | $3.67B | 29.4% |
| 2021 | $12.19B | +10.2% | $5.46B | 44.7% | $2.09B | 17.1% |
| 2020 | $11.07B | +0.5% | $5.16B | 46.6% | $2.78B | 25.1% |
| 2019 | $11.01B | +2.3% | $4.96B | 45.0% | $2.17B | 19.7% |
| 2018 | $10.77B | +7.7% | $4.67B | 43.3% | $1.54B | 14.3% |
| 2017 | $10.00B | +6.3% | $4.00B | 40.0% | $1.06B | 10.7% |
| 2016 | $9.41B | -0.7% | $3.90B | 41.4% | $1.81B | 19.2% |
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Start ComparisonAON — Frequently Asked Questions
Quick answers to the most common questions about buying AON stock.
Is AON's revenue growth accelerating or slowing?
AON maintains +6.4% revenue growth, in line with its 5-year CAGR of +9.2%. TTM revenue stands at $17.5B. Growth rate remains consistent with historical average.
What is AON's long-term revenue growth rate?
Aon plc's 5-year revenue CAGR of +9.2% reflects the sustained expansion pattern. Current YoY growth of +6.4% is near this long-term average.
How is AON's revenue distributed by segment?
AON reports revenue by product line and geographic region. Annual and quarterly breakdowns from 2014-2025 are available for download. Segment mix reveals concentration and diversification trends.