undamentalytics Newsletter
Sign in

Marsh McLennan revenue

Marsh McLennan's revenue was $26.98bn in fiscal 2025, up 10.3% on the year before. Since fiscal 2016 ($13.21bn) it has grown at a compound 8.3% a year. Over the last twelve months it was $28.46bn.

Revenue history

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

Fiscal year2016Dec 20162017Dec 20172018Dec 20182019Dec 20192020Dec 20202021Dec 20212022Dec 20222023Dec 20232024Dec 20242025Dec 2025LTMSept 2026
Revenue13.214.015.016.717.219.820.722.724.527.028.5
Growth on the year before—+6.2%+6.6%+11.4%+3.4%+15.1%+4.5%+9.7%+7.6%+10.3%—

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 $13.3B 49.3% ▲ 14.3%
Other Geographic Areas $9.9B 36.6% ▲ 6.9%
United Kingdom $3.8B 14.1% ▲ 6.1%

From Marsh McLennan's 10-K filed February 9, 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
Marsh McLennan $28.46bn 7.6% 8.6%
Aon plc $17.68bn 3.8% 10.4%
Arthur J. Gallagher & Co. $15.75bn 26.3% 19.6%
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: AON vs MRSHAJG vs MRSHMRSH vs WTW

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

Figures from Marsh McLennan's SEC filings (10-K and 10-Q), retrieved October 20, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Marsh McLennan.