Aon has reported total revenue of $4.15bn for the second quarter of 2025 (Q2 2025), up 11% compared with $3.76bn a year ago.

For the quarter ended 30 June 2025, the company’s attributable net income rose by 10% to $579m.

Operating income for the period stood at $859m, a surge of 31% compared with $656m last year.

The operating margin improved to 20.7% from 17.4% in the year-ago period.

Adjusted operating income rose by $142m (14%), with the adjusted operating margin increasing by 80 basis points to 28.2% compared with the previous year.

Interest income fell by $31m year-over-year (YoY), mainly due to interest earned in the previous year from a $5bn term debt investment used to acquire NFP. Interest expense decreased by $13m, reflecting a reduction in total debt.

Aon president and CEO Greg Case said: “We delivered strong second-quarter results including 6% organic revenue growth, 19% growth in adjusted EPS [earnings per share] and 59% free cash flow growth.

“This performance reflects the growing demand for our advice and solutions, driven by an increasingly complex environment and the need to unlock new sources of capital. Our solutions are resonating with clients and we are effectively meeting that demand.

“The continued successful execution of our Aon United strategy – operationalised by our 3×3 Plan and powered by Aon Business Services – is fuelling sustainable organic growth, margin expansion and free cash flow growth, as we invest in our business. Looking ahead, we remain confident in our outlook and are reaffirming our full-year 2025 guidance.”

For the first half of 2025 (H1 2025), the company’s total revenue reached $8.8bn, up 13% from $7.83bn in the same period last year.

However, net income for the first six months of 2025 decreased by 3% YoY to $1.54bn.

Operating income for the period was $2.32bn, down 9% from $2.12bn in H1 2024.