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Aon plc (AON)
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Aon plc (AON) Income Tax Expense

The tax expense for Aon plc (AON) is $1.01 Billion with a year-over-year change of +35.98%. Income tax expense is the amount a company pays in federal, state, and foreign income taxes based on its taxable income for the period.

AON Tax Expense Chart

AON Tax Expense
$1.01B+526.71% 20Y
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Current Tax Expense

$1.01B

$1.01 Billion

Year-over-Year Change

+35.98%

vs. $742.00M prior year

Historical Data

30

Years of data available

Annual Tax Expense History

YearTax ExpenseYoY Change% Change
2025$1.01B+$267.00M+35.98%
2024$742.00M+$201.00M+37.15%
2023$541.00M+$31.00M+6.08%
2022$510.00M$-113.00M-18.14%
2021$623.00M+$175.00M+39.06%
2020$448.00M+$151.00M+50.84%
2019$297.00M+$151.00M+103.42%
2018$146.00M$-104.00M-41.60%
2017$250.00M+$102.00M+68.92%
2016$148.00M$-27.00M-15.43%
2015$175.00M$-159.00M-47.60%
2014$334.00M$-56.00M-14.36%
2013$390.00M+$30.00M+8.33%
2012$360.00M$-18.00M-4.76%
2011$378.00M+$78.00M+26.00%
2010$300.00M+$32.00M+11.94%
2009$268.00M+$26.00M+10.74%
2008$242.00M$-106.00M-30.46%
2007$348.00M+$132.00M+61.11%
2006$216.00M+$55.00M+34.16%
2005$161.00M$-142.00M-46.86%
2004$303.00M$-108.00M-26.28%
2003$411.00M+$101.00M+32.58%
2002$310.00M+$154.00M+98.72%
2001$156.00M$-177.00M-53.15%
2000$333.00M+$90.00M+37.04%
1999$243.00M$-106.00M-30.37%
1998$349.00M+$146.00M+71.92%
1997$203.00M+$49.00M+31.82%
1996$154.00M
Data as of Wednesday, June 10, 2026

About Aon plc

Aon plc is a global professional services firm that delivers expert advice and innovative solutions across the key areas of risk, retirement, and health. Its comprehensive commercial risk offerings include retail brokerage, cybersecurity consulting, global risk management strategies, and the administration of captive insurance programs. For health-related needs, Aon provides brokerage services for benefits and operates health care exchanges. The company is also active in the capital markets, specializing in treaty and facultative reinsurance, insurance-linked securities, and corporate finance advisory services such as capital raising, strategic guidance, restructuring, and mergers and acquisitions support. Additionally, Aon consults on the design and management of retirement programs, furnishes actuarial services, and advises on investment strategies for a wide array of plan types, including defined benefit and defined contribution plans, endowments, and foundations, for both public and private sector clients. The firm further extends its services through specific brands like CoverWallet, Affinity, Aon Inpoint, and ReView. Established in 1919, Aon plc's corporate headquarters are located in Dublin, Ireland.

Dublin
60,000 employees
Financial Services / Insurance - Brokers
Sector
Financial Services
Industry
Insurance - Brokers
CEO
Gregory Clarence Case