Accounting Firm

Grassi & Co.

US advisory, tax and accounting firm with industry-specific services for businesses and individuals

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TrustList summary

Grassi & Co. is an accounting and advisory firm in the United States, with a presence in New York City. The firm says it has grown steadily over more than four decades through long-term client relationships. Its CPAs, CFOs and business and tax advisers provide strategy and tailored solutions.

What Grassi & Co. offers

Advisory: strategic guidance for business decisions and growth.
Tax: planning and compliance, including specialised tax advice for high-net-worth individuals and closely held businesses.
Accounting: services for businesses and individuals.
Industry research: reports such as a survey of nearly 200 leaders in construction and architecture and engineering.
Webinars: live sessions on topics such as ERP for manufacturers and non-profit technology.

Clients

Industry-specific services are offered to key market sectors, including manufacturers, distributors, non-profits and construction firms.

Key facts

Ranking: 52nd largest US accounting firm, according to Inside Public Accounting
Regional standing: Listed as a leader in the Mid-Atlantic region
Ownership: Describes itself as owned by its own people

Summary written by TrustList from the business's own published information, Oct 2026.

Grassi & Co. rankings

Grassi & Co. is ranked on 4 TrustList rankings: #14 on 1, #20 on 1, #22 on 1 and #32 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Grassi & Co. has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Accounting firm · 4 rankings

#14of 20
Erp
It is the only one of the 20 here listing energy & natural resources and legal cannabis.
Its profile: “- Webinars: live sessions on topics such as ERP for manufacturers and non-profit technology.”
Of the 20 here, 17 also cover accounting and 9 also cover outsourcing; 2 also work in London and 2 also work in York.
Behind Gofrugal, ahead of ICT Information Systems LLC.
#20of 29
Supply chain logistics and transport
It is the only one of the 29 here listing banking and CMS.
Of the 29 here, 25 also cover business services and 23 also cover real estate; 2 also work in Montreal.
Behind Gestion Milan, ahead of Groupe Strategie Conseil Inc..
#22of 37
Energy and natural resources
It is the only one of the 37 here listing construction and ERP.
Of the 37 here, 32 also cover financial services and 28 also cover manufacturing; 2 also work in New York and 2 also work in Dubai.
Behind Gilbert & Stewart, CPAs, ahead of GreerWalker CPAs and Advisors.
#32of 39
Arts entertainment and music
It is one of 2 here listing outsourcing and utilities.
Of the 39 here, 24 also cover consumer products & services and 18 also cover medical.
Behind Gilbert & Stewart, CPAs, ahead of Gursey Schneider.