EX-FILING FEES

Calculation of Filing Fee Tables
S-3
MARSH & MCLENNAN COMPANIES, INC.

Table 1: Newly Registered and Carry Forward Securities	☐Not Applicable

		Security Type	Security Class Title	Fee Calculation or Carry Forward Rule	Amount Registered	Proposed Maximum Offering Price Per Unit	Maximum Aggregate Offering Price	Fee Rate	Amount of Registration Fee	Carry Forward Form Type	Carry Forward File Number	Carry Forward Initial Effective Date	Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward
Newly Registered Securities
Fees to be Paid	1	Debt	4.250% Senior Notes due 2032	457(r)	673,860,000	$ 0.99959	$ 673,583,717.40	0.000087	$ 58,601.79
Fees to be Paid	2	Debt	4.625% Senior Notes due 2036	457(r)	673,860,000	$ 0.99243	$ 668,758,879.80	0.000087	$ 58,182.03
Fees Previously Paid
Carry Forward Securities
Carry Forward Securities
			Total Offering Amounts:				$ 1,342,342,597.20		$ 116,783.82
			Total Fees Previously Paid:						$ 0.00
			Total Fee Offsets:						$ 0.00
			Net Fee Due:						$ 116,783.82

Offering Note

¹	The securities sold in this offering are registered under the registrant's existing registration statement on Form S-3 (File No. 333-280979). The prospectus supplement to which this Exhibit is attached is a final prospectus for the related offering. The maximum aggregate amount of that offering is $1,342,342,597.20. The amount registered, maximum aggregate offering price and registration fee have been calculated based on the U.S. dollar/euro exchange rate of USD1.1231:EUR 1.00, as of October 16, 2026, as published by the Board of Governors of the Federal Reserve System.

²	The securities sold in this offering are registered under the registrant's existing registration statement on Form S-3 (File No. 333-280979). The prospectus supplement to which this Exhibit is attached is a final prospectus for the related offering. The maximum aggregate amount of that offering is $1,342,342,597.20. The amount registered, maximum aggregate offering price and registration fee have been calculated based on the U.S. dollar/euro exchange rate of USD1.1231:EUR 1.00, as of October 16, 2026, as published by the Board of Governors of the Federal Reserve System.

Table 2: Fee Offset Claims and Sources	☑Not Applicable

		Registrant or Filer Name	Form or Filing Type	File Number	Initial Filing Date	Filing Date	Fee Offset Claimed	Security Type Associated with Fee Offset Claimed	Security Title Associated with Fee Offset Claimed	Unsold Securities Associated with Fee Offset Claimed	Unsold Aggregate Offering Amount Associated with Fee Offset Claimed	Fee Paid with Fee Offset Source
Rules 457(b) and 0-11(a)(2)
Fee Offset Claims
Fee Offset Sources
Rule 457(p)
Fee Offset Claims
Fee Offset Sources

Table 3: Combined Prospectuses	☑Not Applicable

	Security Type	Security Class Title	Amount of Securities Previously Registered	Maximum Aggregate Offering Price of Securities Previously Registered	Form Type	File Number	Initial Effective Date

Narrative Disclosure

The maximum aggregate offering price of the securities to which the prospectus relates is $1,342,342,597.20. The prospectus is a final prospectus for the related offering.