Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
The Board of Directors and Shareholders
Accenture Ltd:
We consent to the incorporation by reference in the registration statements (Nos. 333-127248,
333-112854 and 333-104628) on Form S-3 and (No. 333-65376) on Form S-8 of Accenture Ltd of our
reports dated October 27, 2005, with respect to the consolidated balance sheets of Accenture Ltd as
of August 31, 2005 and 2004, and the related consolidated statements of income, shareholders
equity and comprehensive income, and cash flows for each of the years in the three-year period
ended August 31, 2005, managements assessment of the effectiveness of internal control over
financial reporting as of August 31, 2005 and the effectiveness of internal control over financial
reporting as of August 31, 2005, which reports appear in the August 31, 2005 annual report on Form
10-K of Accenture Ltd.
/s/ KPMG
LLP
Chicago, Illinois
October 27, 2005