Bill Cotter founded Title Alliance Ltd in 1983. He started in the title insurance business in 1959, working part-time for the Title Abstract Company of Pennsylvania. He later became Executive Vice President of Title Abstract Company, and was named President of T.A. Title Insurance Company in 1979.

Bill was the Founding President of Pennsylvania Title Agents Association; President of Sales and Marketing Executives of Delaware County-Main Line; President of Pennsylvania Land Title Association; Founding Board Member of Pennsylvania Land Title Institute; Vice Chairman of American Land Title Association – Underwriter Section Executive Committee; Member of the Board of Alliance Bank (Lawrence Park, PA); and Member of the Board of Oliver Heating and Cooling Company. Bill recently served as Chairman of the Real Estate Services Providers Council (RESPRO®).