Comptroller of the Commonwealth (CTR)

Welcome to the Office of the Comptroller of the Commonwealth.
Our mission is to promote accountability, integrity, and clarity in Commonwealth business, fiscal, and administrative enterprises.

Contact Us

Comptroller Thomas G. Shack, III


1 Ashburton Place, 9th Floor, Boston, MA 02108


Reception (617) 727-5000
Help Desk (617) 973-2468


General (617) 727-2163

Who we serve

The Office of the Comptroller is a uniquely independent and apolitical overseer of more than $60 billion in governmental and other funding sources and 12 million business transactions annually. In addition, the Comptroller oversees the Commonwealth’s major audit functions ensuring security, transparency, accountability, and service delivery across all branches of state government. 

Learn more about the Office of the Comptroller

2017 Tax Information



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