Global insurance broker and risk manager Aon has reported a net profit of $US1.43 billion ($1.83 billion) for last year, up 25% on 2013.

Revenue grew 2% to $US12.02 billion ($15.4 billion), fuelled by organic growth in commissions and fees.

CEO Greg Case says the fourth-quarter performance was strong, with net profit rising 30% to $US467 million ($598.48 million).

He attributes this spike to organic revenue growth, improved operating margins, benefits from “significant investments in client serving capabilities” and operational restructuring.

The Risk Solutions business reported operating income of $US1.65 billion ($2.11 billion) for last year, up 7% on 2013, with revenue rising 1% to $US7.81 billion  ($10.01 billion).

HR Solutions enjoyed more robust growth. Operating income grew 53% to $US485 million ($621.55 million) on revenue of $US4.26 billion ($5.46 billion).