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William Most, EA, MAAA

Principal, Consulting Actuary
New York, NY, US

Tel: +1 646 4733000

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Professional Designations

  • Enrolled Actuary certified by the Joint Board of the U.S. Departments of Labor and Treasury
  • Member, American Academy of Actuaries


  • BA, Mathematics, Hobart College, Geneva, N.Y.

Current Responsibility

Bill is a principal and consulting actuary in the New York office of Milliman. He joined the firm in 2002 and is the New York Region Retirement Practice Leader.


Bill has had significant pension and employee benefits consulting experience since beginning his career in 1981.

Bill’s areas of expertise include defined benefit plan funding issues, GAAP and SSAP accounting requirements, plan redesign, and non-discrimination testing. He also has experience with OPEB valuations, defined contribution plans, nonqualified plans, and defined benefit plan outsourcing. Bill is an expert in the nuances of pension funding under the Pension Protection Act of 2006 and is the chairman of Milliman’s Corporate Strategic Planning Group. His clients include not-for-profit organizations, law firms, and corporations.

  • Work at Milliman

    • “I was offered a chance to come in, shake things up, create something."
    Work at Milliman