Hamersley Partners provides a broad range of best-in-class tax consulting and business advisory services, both directly and through strategic alliance partners located throughout the United States and various foreign jurisdictions, each of which has a proven track record of professional integrity, consistent adherence to best practices, and exceptional client service as a partner, managing director, or senior manager at a Big Four accounting firm, international law firm, or other top-tier tax practice.

The services offered by the firm include business transaction negotiation, structuring, and analysis; tax consulting advice and planning; taxpayer representation before the Internal Revenue Service, United States Tax Court, California Franchise Tax Board, California Department of Tax and Fee Administration, and California Office of Tax Appeals; and expert witness testimony and tax-related litigation services.