U.S was Aon’s largest region in fiscal 2025, bringing in $8.30B of $17.17B (48%).
| Geography | FY 2008 | FY 2009 | FY 2010 | FY 2011 | FY 2012 | FY 2013 | FY 2014 | FY 2015 | FY 2016 | FY 2017 | FY 2018 | FY 2019 | FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| U.S | $5.68B | $5.94B | $7.69B | $8.30B | ||||||||||||||
| United States | — | — | — | — | ||||||||||||||
| Us | — | — | — | — | ||||||||||||||
| Europe, Middle East, & Africa Other Than U.K. & Ireland | $2.44B | $2.67B | $2.90B | $3.15B | ||||||||||||||
| Europe, Middle East, & Africa Other Than United Kingdom | — | — | — | — | ||||||||||||||
| Europe Middle East & Africa | — | — | — | — | ||||||||||||||
| Europe, Middle East, & Africa | — | — | — | — | ||||||||||||||
| Europe, Middle East & Africa | — | — | — | — | ||||||||||||||
| Segment Geographical Groups Of Countries Group Two | — | — | — | — | ||||||||||||||
| U.K | $1.66B | $1.82B | $1.98B | $2.22B | ||||||||||||||
| United Kingdom | — | — | — | — | ||||||||||||||
| Gb | — | — | — | — | ||||||||||||||
| Americas Other Than U.S | $1.14B | $1.26B | $1.34B | $1.63B | ||||||||||||||
| Asia Pacific | $1.47B | $1.59B | $1.68B | $1.71B | ||||||||||||||
| Segment Geographical Groups Of Countries Group One | — | — | — | — | ||||||||||||||
| Segment Geographical Groups Of Countries Group Three | — | — | — | — | ||||||||||||||
| Americas Other Than Us | — | — | — | — | ||||||||||||||
| Ireland | $99.00M | $113.00M | $146.00M | $185.00M | ||||||||||||||
| Eliminations | — | -$12.00M | — | -$16.00M | ||||||||||||||
| Intersegment Elimination | — | — | — | — | ||||||||||||||
| Corporate/Eliminations | -$17.00M | -$12.00M | -$28.00M | -$16.00M | ||||||||||||||
| Total | $12.48B | $13.36B | $15.70B | $17.17B |
Aon brought in $17.17B from its eight regions in fiscal 2025, the year ended December 31, 2025. Aon regrouped these regions after fiscal 2024, so the total does not compare directly with that year's $15.70B. U.S was the largest at $8.30B (48.3%), ahead of Europe, Middle East, & Africa Other Than U.K. & Ireland at $3.15B (18.4%) and U.K at $2.22B (12.9%). The other three regions brought in $3.53B combined.
Compared with fiscal 2024, Americas Other Than U.S grew fastest, up 22.3% to $1.63B. Every region above 2% of revenue grew.
Aon began breaking out Eliminations in fiscal 2023, when it brought in -$12.00M. The total is net of Eliminations, which took $16.00M off revenue in fiscal 2025.
Commercial Risk Solutions was Aon’s largest product and service line in fiscal 2025, bringing in $8.50B of $17.17B (50%).
| Product and Service | FY 2015 | FY 2016 | FY 2017 | FY 2018 | FY 2019 | FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Commercial Risk Solutions | $6.72B | $7.04B | $7.86B | $8.50B | |||||||
| Health Solutions | $2.22B | $2.43B | $3.34B | $3.84B | |||||||
| Reinsurance Solutions | $2.19B | $2.48B | $2.66B | $2.79B | |||||||
| Retirement Solutions | — | — | — | — | |||||||
| Wealth Solutions | $1.37B | $1.43B | $1.87B | $2.07B | |||||||
| Data & Analytic Services | — | — | — | — | |||||||
| Eliminations | — | -$12.00M | — | -$16.00M | |||||||
| Elimination | — | — | — | — | |||||||
| Intersegment Elimination | — | — | — | — | |||||||
| Corporate/Eliminations | -$17.00M | -$12.00M | -$28.00M | -$16.00M | |||||||
| Total | $12.48B | $13.36B | $15.70B | $17.17B |
Aon brought in $17.17B from its six product and service lines in fiscal 2025, the year ended December 31, 2025. Aon regrouped these lines after fiscal 2024, so the total does not compare directly with that year's $15.70B. Commercial Risk Solutions was the largest at $8.50B (49.5%), ahead of Health Solutions at $3.84B (22.4%) and Reinsurance Solutions at $2.79B (16.3%). The remaining line, Wealth Solutions, brought in $2.07B.
Compared with fiscal 2024, Health Solutions grew fastest, up 15.1% to $3.84B. Every line above 2% of revenue grew.
Aon began breaking out Eliminations in fiscal 2023, when it brought in -$12.00M. The total is net of Eliminations, which took $16.00M off revenue in fiscal 2025.
Risk Capital was Aon’s largest segment in fiscal 2025, bringing in $11.29B of $17.17B (66%).
| Segment | FY 2008 | FY 2009 | FY 2010 | FY 2011 | FY 2012 | FY 2013 | FY 2014 | FY 2022 | FY 2023 | FY 2024 | FY 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Risk Capital | $8.91B | $9.52B | $10.52B | $11.29B | |||||||
| Risk Solutions | — | — | — | — | |||||||
| Risk & Insurance Brokerage Services | — | — | — | — | |||||||
| Human Capital | $3.59B | $3.86B | $5.21B | $5.91B | |||||||
| Hr Solutions | — | — | — | — | |||||||
| Consulting | — | — | — | — | |||||||
| Unallocated Amount To | — | — | — | — | |||||||
| Corporate/Eliminations | -$17.00M | -$12.00M | -$28.00M | -$16.00M | |||||||
| Business Intersegment Eliminations | — | — | — | — | |||||||
| Eliminations | — | -$12.00M | — | -$16.00M | |||||||
| Intersegment Elimination | — | — | — | — | |||||||
| Total | $12.48B | $13.36B | $15.70B | $17.17B |
Aon brought in $17.17B from its four segments in fiscal 2025, the year ended December 31, 2025. Aon regrouped these segments after fiscal 2024, so the total does not compare directly with that year's $15.70B. Risk Capital was the largest at $11.29B (65.8%), ahead of Human Capital at $5.91B (34.4%).
Compared with fiscal 2024, Human Capital grew 13.4% to $5.91B and Risk Capital grew 7.4% to $11.29B.
Aon began breaking out Eliminations in fiscal 2023, when it brought in -$12.00M. The total is net of Corporate/Eliminations, which took $16.00M off revenue in fiscal 2025.
Aon (AON) reports its revenue by geography, by product and service and by segment. In fiscal 2025, U.S was its largest region, bringing in $8.30B (48.3% of the total), followed by Europe, Middle East, & Africa Other Than U.K. & Ireland at $3.15B (18.4%).
U.S was Aon's largest region in fiscal 2025, bringing in $8.30B, or 48.3% of the $17.17B total across its eight regions.
Commercial Risk Solutions was Aon's largest product and service line in fiscal 2025, bringing in $8.50B, or 49.5% of the $17.17B total across its six product and service lines.
Risk Capital was Aon's largest segment in fiscal 2025, bringing in $11.29B, or 65.8% of the $17.17B total across its four segments.
Every figure comes from Aon's annual financial filings, as reported. Each line keeps the name Aon gives it, and years follow its fiscal calendar.
Aon's revenue by geography goes back to fiscal 2008, with figures through fiscal 2025. The latest four fiscal years are free to view, and the full history is available with a Business Quant subscription.