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At a Glance


“High quality people and friendly culture”

“Opportunities for growth”

“Generous compensation”


“Busy season hours”


“Administrative tasks are sometimes overwhelming”

About Grassi

Founded in 1980 by Lou Grassi, Grassi is now one of the 100 largest tax, accounting, and business advisory firms in the U.S., as measured by annual revenues. The firm has also been ranked among the 20 largest accounting firms in the New York City area and the second largest on Long Island.

Based in Jericho, N.Y., the firm has New York offices in Long Island, Manhattan, and Westchester County, as well as offices in New Jersey, Florida, and the Greater Boston area. The firm also has two offices in Italy, one in Milan, and one in Rome.

Grassi is an independent member firm of Moore North America, an arm of Moore Global, an international association with over 260 independent accounting and consulting firms with approximately 30,000 people total in over 110 countries.


50 Jericho Quadrangle
Suite 200
Jericho, NY 11753
Phone: (516) 256-3500

Firm Stats

Employer Type: Private
CEO/Managing Partner: Louis C. Grassi
2021 Employees (All Locations): 385