Marsh McLennan: Marsh McLennan — Third-Party Vendor Rationalization in Professional Services | TacticalVC

Marsh McLennan

Marsh McLennan — Third-Party Vendor Rationalization in Professional Services

Published Mar 24, 2026

Marsh McLennan, a Large Enterprise Insurance Brokerage & Risk company, achieved measurable value creation through Supplier and Input Costs. - **JLT integration savings**: Total annualized cost synergies from the JLT acquisition exceeded $400 million by 2022, surpassing the original target, with vendor rationalization contributing alongside headcount and real estate optimization.

Company	Marsh McLennan
Industry	Insurance Brokerage & Risk
Company Size	Large Enterprise
Primary Lever	Supplier and Input Costs
Key Result	- JLT integration savings: Total annualized cost synergies from the JLT acquisition exceeded $400 million by 2022, surpassing the original target, with vendor rationalization contributing alongside headcount and real estate optimization

What was the challenge?

Marsh McLennan, the world's largest insurance broker and risk advisory firm with approximately $20 billion in revenue (2022) and over 85,000 employees across its Marsh, Guy Carpenter, Mercer, and Oliver Wyman operating companies, had a complex third-party spend profile. Each operating company historically managed its own vendor relationships independently — four separate sets of technology vendors, office suppliers, professional services firms, travel providers, and data suppliers. Total third-party spend across the enterprise ran into billions annually, but the four operating companies rarely coordinated procurement, leaving significant savings on the table. Additionally, the rapid growth through acquisitions (Jardine Lloyd Thompson in 2019 for $5.6 billion being the largest) brought additional vendor relationships that further fragmented the supply base. SG&A as a percentage of revenue was an area of ongoing focus for management seeking to improve operating leverage.

What did they do?

Between 2020 and 2023, Marsh McLennan executed a cross-company vendor rationalization program as part of its broader operational efficiency initiative:

Enterprise procurement function: Established a centralized procurement organization with authority to negotiate enterprise-wide contracts across all four operating companies. Previously, each company negotiated independently — meaning Marsh and Mercer might pay different rates for the same software platform or consulting firm.
Technology vendor consolidation: Consolidated enterprise technology spend onto fewer, larger platform relationships. Standardized on core platforms for CRM, HR, finance, and collaboration tools across operating companies, replacing duplicate licenses and reducing per-seat costs through volume aggregation.
Data and analytics vendor rationalization: Consolidated overlapping data subscriptions and analytics tools across Marsh (insurance data), Mercer (HR/benefits data), and Oliver Wyman (research databases). Multiple operating companies were paying for overlapping market data, economic data, and industry research from the same providers.
Travel and professional services: Negotiated enterprise-wide agreements for travel management, legal services, and management consulting, replacing operating-company-level contracts with group-level deals that reflected Marsh McLennan's true scale.
JLT integration synergies: Used the JLT acquisition integration as an opportunity to renegotiate vendor contracts at the combined entity's higher volume, with JLT integration delivering over $400 million in annualized cost savings by 2022 (including but not limited to vendor rationalization).