Kathryn Bibbo

Kathryn Bibbo

Tax Law

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Concord, New Hampshire

29+ years experience

Rath Young Pignatelli PC

Updated: Dec 25, 2025

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Bio

Kathryn is a shareholder of the firm and a member of the firm’s Tax Practice Group, where she concentrates her practice in assisting clients with state and local tax matters. Kathryn’s practice focuses on matters before the New Hampshire Department of Revenue Administration, the Massachusetts Department of Revenue, and the Vermont Department of Taxes. Prior to joining the firm in 2007, she was with the state and local tax practice of PricewaterhouseCoopers, LLP in its Chicago office. She specialized in income/franchise tax consulting and audit defense for multistate and multinational businesses. Prior to then, Kathryn served as Special Assistant Attorney General for the Income Tax Litigation Unit of the Illinois Department of Revenue. Kathryn has represented clients on numerous state and local tax matters in the New England states, including but not limited to: In 2017, Kathryn was selected to be included in Best Lawyers in America in the area of tax law. Kathryn is a regular speaker and author on state tax topics in New England, including but not limited to: Kathryn is presently on the Board of Trustees for the New England State and Local Tax Forum, a member of the Vermont Tax Advisory Board appointed by the Commissioner of Taxes to represent business interests, and serves as co-contributor for the New Hampshire and Vermont state tax developments for Council on State Taxation (COST) in Washington, D.C.