Eric and Nancy Cook have shown their commitment to the clients of the state government tax market over the past twenty years, and have successfully developed and delivered tax policy analysis products and services to over twenty-five states. They began serving the state tax market while with (then) Price Waterhouse during the 1980s, and Barents Group, LLC of KPMG (now part of BearingPoint) during the 1990s. They formed Chainbridge in 2000 and have been successfully developing and delivering only the highest quality products and services for the firm's state government clients since that time.

Current and past clients of Chainbridge, Inc. include:

• The State of Alabama
• The State of Minnesota
• The State of Connecticut
• The State of Louisiana
• The State of New Jersey
• The State of Rhode Island
• The District of Columbia
• The American Association of Retired Persons