John Guman

John Guman is an experienced tax professional with a career spanning over three decades. Currently serving as Tax Director for State & Local Tax at Diageo since November 2005, John Guman oversees compliance and audits related to state income, franchise, sales, use, and property taxes. In a previous role at Diageo as Tax Director for Business Support, John Guman led the US planning agenda for income and sales taxes. Prior experience includes working as Tax Manager at United Illuminating from February 1990 to October 2005, where responsibilities included compliance and audits for state sales/use and federal income/franchise taxes. John Guman holds a Bachelor of Science degree in Accounting from Boston College, earned between 1985 and 1988.