Aon (AON) Net Margin (2009 - 2026)

Aon's Net Margin history runs 18 years deep, the most recent figure standing at 24.61% for Q1 2026.

• On a quarterly basis, Net Margin rose 385.0% year-over-year to 24.61% in Q1 2026; TTM through Mar 2026 was 22.92%, a 697.0% increase from a year earlier, with the FY2025 full-year figure at 21.83%, up 450.0% from the prior year.
• Net Margin retreated to 24.61% in Q1 2026 per AON's latest filing, from 39.63% in the prior quarter.
• Across five years, Net Margin topped out at 39.63% in Q4 2025 and bottomed at 9.54% in Q3 2024.
• The 5-year median for Net Margin is 17.7% (2024), against an average of 19.93%.
• Biggest YoY gain for Net Margin was 4881 bps in 2022; the steepest drop was 707 bps in 2022.
• Year by year, Net Margin stood at 21.28% in 2022, then declined by 29 bps to 15.02% in 2023, then increased by 18 bps to 17.7% in 2024, then surged by 124 bps to 39.63% in 2025, then sank by 38 bps to 24.61% in 2026.
• Per Business Quant, the three latest AON Net Margin figures stand at 24.61% (Q1 2026), 39.63% (Q4 2025), and 11.76% (Q3 2025).