Western Guaranty Fund Services Managing and Paying Claims for Property and Casualty Insurance Western Guaranty Fund Services WGFS is a voluntary nonprofit unincorporated association formed in 1984 for the purpose of managing and paying claims for property and casualty insurance guaranty associations. WGFS exists to provide management and claims supervisory services to insurance guaranty associations also known as guaranty funds to assist guaranty associations in the discharge of their statutory responsibilities and to promptly and efficiently handle covered claims against insolvent insurers. In 1984 a group of western United States insurance guaranty associations united with a common goal to form Western Guaranty Fund Services. Their goal was to centralize the management of their property and casualty insurance claims and to serve their administrative needs as economically as possible.