On 31 August 2026 Aon announced a definitive agreement to buy USI from KKR and other shareholders for $17.0 billion. The deal is a scale-up of Aon’s U.S. middle-market brokerage platform after NFP. This article separates the announced numbers from a hypothetical Dazur reading of the file.
On 31 August 2026, Aon plc announced that it had signed a definitive agreement to acquire USI Insurance Services from KKR and other shareholders. The purchase price in the announcement is $17.0 billion, or $16.7 billion on a net basis after approximately $278 million of tax attributes.
Aon describes USI as a U.S. middle-market broker of property & casualty, employee benefits, personal risk and retirement solutions, with about $3 billion in annual revenue, more than 10,500 colleagues and nearly 200 U.S. offices. The firm is presented as complementary to Aon’s 2024 acquisition of NFP and to Aon’s “one-firm” operating model.
After closing, USI chairman and CEO Mike Sicard is expected to become President of Aon plc and global CEO of Middle Market, reporting to Greg Case. Closing is subject to customary conditions, including regulatory approvals, and is expected in the fourth quarter of 2026. The companies will operate independently until then.
Aon’s stated rationale is scale in the U.S. middle market (Aon cites a segment of more than $40 billion and more than one third of U.S. commercial P&C direct written premium), access to excess & surplus distribution, and a larger proprietary data set. Identified synergies are approximately $395 million of annual run-rate net adjusted EBITDA impact from revenue and cost items. Aon says the transaction is expected to be accretive to adjusted EPS in 2028 and thereafter. Funding is expected from new debt. Aon says it expects to keep ratings of Baa2 (Moody’s) and A- (S&P) and does not expect near-term share repurchases while it prioritises debt repayment.
BofA Securities and Citi were financial advisors to Aon. None of the above is a Dazur opinion; it is a restatement of Aon’s 31 August 2026 release.
Figures below are as disclosed by Aon on 31 August 2026. Items not in that release are marked as not disclosed.
| Item | Figure | Source / note |
|---|---|---|
| Headline purchase price | $17.0 billion | Aon announcement, 31 Aug 2026 |
| Net purchase price | $16.7 billion | After ~$278m tax attributes |
| Stated multiple | ~14.5x synergized TTM adjusted EBITDA | Aon’s definition; not an unadjusted EV/EBITDA |
| USI annual revenue | Approximately $3 billion | Aon announcement |
| USI adjusted EBITDA | Not disclosed as a standalone unadjusted figure | Cannot be reverse-engineered cleanly from a synergized multiple |
| Synergy EBITDA impact | ~$395 million run-rate | Aon estimate; forward-looking |
| Expected close | Q4 2026 | Subject to approvals |
| Seller | KKR and other shareholders | Financial buyer exit |
| Sector / geography | U.S. insurance brokerage | Middle-market P&C, benefits, retirement |
We do not publish an independent USI EBITDA or an unsynergized multiple. A 14.5x figure that already includes run-rate synergies is not comparable to a raw EV/EBITDA on last year’s reported earnings.
The transaction is a strategic buyer acquiring a platform that itself was owned by private equity. It is also a precedent transaction that other brokerage files will be compared with — if, and only if, the analyst states whether the multiple is cash-free/debt-free, synergized, and on which EBITDA definition.
For owners of professional-services and brokerage businesses, the announcement is a reminder that scale, data and distribution still attract control premiums. For lenders, the financing mix (new debt, rating defence, paused buybacks) is part of the credit story, not a side note.
Based on publicly available information, here’s how Dazur would approach this transaction. Dazur did not advise Aon, USI or KKR. The following is a hypothetical application of the Dazur Business Valuation Framework 2026.
On a brokerage platform of this size, the file is not a single data room. It is many: producer agreements, carrier appointments, E&S binding authorities, employee-benefit ERISA files, personal-lines books, retirement consulting mandates, and USI ONE / Aon Business Services technology overlaps. Dazur would want one structured layer for:
A centralized layer would not close the deal. It would reduce the number of times the same producer schedule is re-exported for each workstream.
The questions that matter on a broker are not the same as on a manufacturer. Dazur would investigate organic versus acquired growth, contingent income quality, producer concentration, cultural “one-firm” claims versus local P&L reality, and how fiduciary cash is treated in net debt. We would not invent a USI margin. We would ask for the quality-of-earnings bridge that turns “approximately $3 billion of revenue” into cash earnings a credit committee can underwrite.
Aon has already published a synergized multiple. A Dazur file would show three columns, not one:
We will not invent an unsynergized EV/EBITDA. That would be a fake valuation.
The commercial pillar is cross-sell between Aon, NFP and USI and access to E&S. The intangible pillar is the combined data platform Aon calls a “context advantage.” The people pillar is producer retention after a change of control. The financial pillar is leverage and the decision to pause buybacks. Those are investigation themes, not guaranteed outcomes.
The announced buyer is a listed strategic. The seller group includes a financial buyer. In a Dazur process for a similar (much smaller) European broker, the counterparty set would usually include strategics, specialist PE, and family offices that already own distribution. The filter is thesis and information readiness, not a teaser blast.
Structured data and AI-assisted review would be aimed at missing producer agreements, inconsistent contingent-income treatment, client-concentration cliffs, and change-of-control clauses in carrier appointments. The point is to surface gaps earlier — not to claim a fixed number of weeks saved.
Traditional brokerage deals still move information between management, advisors, lawyers, accountants and financing banks. A centralized layer (data → structure → intelligence → valuation → matching → diligence → decision) is how Dazur would try to keep those readers on the same file.