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Aon plc revenue

Aon plc's revenue was $17.18bn in fiscal 2025, up 9.4% on the year before. Since fiscal 2009 ($7.59bn) it has grown at a compound 5.2% a year. Over the last twelve months it was $17.68bn.

Revenue history

US$ billions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

Fiscal year2009Dec 20092010Dec 20102011Dec 20112012Dec 20122013Dec 20132014Dec 20142015Dec 20152016Dec 20162017Dec 20172018Dec 20182019Dec 20192020Dec 20202021Dec 20212022Dec 20222023Dec 20232024Dec 20242025Dec 2025LTMSept 2026
Revenue7.68.511.311.511.812.09.59.410.010.811.011.112.212.513.415.717.217.7
Growth on the year before—+12.1%+32.6%+2.0%+2.6%+1.9%−21.3%−0.7%+6.3%+7.7%+2.3%+0.5%+10.2%+2.3%+7.2%+17.4%+9.4%—

Revenue as reported in the company's 10-K and 10-Q filings (for banks, net interest income plus non-interest income). Growth is left blank when the earlier figure was zero or negative.

Where the revenue comes from

Fiscal year to December 31, 2025
Geography
Region Revenue Share YoY
United States $8.3B 48.2% ▲ 8.0%
Europe Middle East and Africa Other Than United Kingdom and Ireland $3.2B 18.4% ▲ 8.7%
United Kingdom $2.2B 12.9% ▲ 12.4%
Asia Pacific $1.7B 10.0% ▲ 2.1%
Americas Other Than United States $1.6B 9.5% ▲ 22.3%
Ireland $185M 1.1% ▲ 26.7%

From Aon plc's 10-K filed February 13, 2026, as tagged in the filing. View filing. Indented rows are part of the line above; their share is of that line. In the bars, the faint bar behind is the year before.

Revenue against peers

Insurance Brokers: the closest covered companies by revenue. Last twelve months.

CompanyRevenueGrowth3-year growth a year
Aon plc $17.68bn 3.8% 10.4%
Arthur J. Gallagher & Co. $15.75bn 26.3% 19.6%
Marsh McLennan $28.46bn 7.6% 8.6%
Willis Towers Watson $10.27bn 4.8% 3.4%
Brown & Brown $6.91bn 26.1% 18.7%
Erie Indemnity $4.12bn 2.0% 9.4%

Compare with peers

Head to head: AJG vs AONAON vs MRSHAON vs WTW

More: Insurance Brokers stocks compared, Financials sector, rankings of US companies

Figures from Aon plc's SEC filings (10-K and 10-Q), retrieved October 29, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Aon plc.