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Aon (AON) Tax Rate (2016 - 2025)

Aon (AON) has 17 years of Tax Rate data on record, last reported at 22.86% in Q4 2025.

  • For Q4 2025, Tax Rate rose 524.0% year-over-year to 22.86%; the TTM value through Dec 2025 reached 21.2%, down 23.0%, while the annual FY2025 figure was 21.2%, 23.0% down from the prior year.
  • Tax Rate reached 22.86% in Q4 2025 per AON's latest filing, up from 21.27% in the prior quarter.
  • Across five years, Tax Rate topped out at 34.06% in Q2 2021 and bottomed at 2.65% in Q3 2021.
  • Average Tax Rate over 5 years is 18.06%, with a median of 19.2% recorded in 2023.
  • Peak YoY movement for Tax Rate: plummeted -2518bps in 2021, then skyrocketed 2069bps in 2022.
  • A 5-year view of Tax Rate shows it stood at 15.73% in 2021, then crashed by -61bps to 6.06% in 2022, then soared by 176bps to 16.75% in 2023, then grew by 5bps to 17.62% in 2024, then increased by 30bps to 22.86% in 2025.
  • Per Business Quant database, its latest 3 readings for Tax Rate were 22.86% in Q4 2025, 21.27% in Q3 2025, and 15.5% in Q2 2025.