Grassi

Grassi Your partner in providing accounting, audit, tax, and advisory services. "Grassi" is the brand name under which Grassi Advisory Group, Inc. and Grassi & Co.

Founded in 1980 with just a desk and an empty filing cabinet, Grassi has grown into one of the nation's leading independent advisory and accounting firms. With client satisfaction more than twice the industry average, we're proud to be ranked 16th on Vault's Best US Accounting Firms to Work For. We have earned this reputation through exceptional client service and by staying true to our core value

s. As strategic advisors, Grassi professionals are dedicated ambassadors of our client's future business aspirations. Everything we do centers on our client's success and the enrichment of our relationships with them. While other firms merge or take private equity funding, Grassi secured its independence by transitioning to an employee-owned ESOP in 2023. This independence empowers us to focus on what matters: exceptional service and strategic guidance to help our clients’ businesses thrive. Certified Public Accountants, PC, provide professional services. Grassi Advisory Group, Inc. Certified Public Accountants, PC are independently owned firms that practice in an alternative practice structure in accordance with the AICPA Code of Professional Conduct and applicable laws, regulations and professional standards. Grassi & Co. Certified Public Accountants, PC is a licensed CPA firm that provides attest services. and its subsidiary entities provide tax and business consulting services to clients and provide staff and other administrative resources to Grassi.

New York State Decouples from Federal R&D Rules: Considerations for Construction BusinessesNew York’s recently enacted F...
06/03/2026

New York State Decouples from Federal R&D Rules: Considerations for Construction Businesses

New York’s recently enacted Fiscal Year 2027 State Budget includes changes to the treatment of research and experimental (R&E) expenditures for New York State and New York City tax purposes. For construction and specialty trade businesses, the change may create differences between federal and state tax treatment beginning with the 2025 tax year.

Our latest article outlines the change and key considerations for construction businesses operating in New York. Read the article: https://www.grassiadvisors.com/blog/new-york-state-decouples-from-federal-rd-rules-what-construction-businesses-should-know/?utm_campaign=Social26&utm_source=Facebook&utm_medium=Social

Long Island Business News has recognized Grassi Founder and CEO, Louis Grassi, as a 2026 Accounting Influencer for his l...
06/03/2026

Long Island Business News has recognized Grassi Founder and CEO, Louis Grassi, as a 2026 Accounting Influencer for his leadership in the profession and impact on the business community.

The award recognizes accountants not simply as stewards of financial records, but as trusted advisors guiding businesses, nonprofits and individuals through critical decisions.

Congratulations, Lou, on this well-earned recognition: https://libn.com/2026/05/29/louis-c-grassi-cpa-cfe/

A November 2025 Federal Claims Court ruling may enable refunds for IRS penalties and interest from the COVID‑19 disaster...
06/02/2026

A November 2025 Federal Claims Court ruling may enable refunds for IRS penalties and interest from the COVID‑19 disaster period, but taxpayers may need to file refund and abatement claims by July 10.

In our latest article, Grassi’s Tax advisors outline the implications of Kwong v. United States, identify who may be affected, and share key considerations for filing protective claims as the case continues to develop.

Read more: https://www.grassiadvisors.com/blog/kwong-v-united-states-decision-could-mean-irs-refunds-for-millions-but-taxpayers-must-act-by-july-10/?utm_campaign=Social26&utm_source=Facebook&utm_medium=Social

Pride Month is a reminder that authenticity, respect, and belonging are critical to creating stronger communities and wo...
06/01/2026

Pride Month is a reminder that authenticity, respect, and belonging are critical to creating stronger communities and workplaces.

As we recognize Pride Month 2026, our firm remains committed to creating an environment where individuals feel welcomed and valued for who they are. In June and throughout the year, we encourage these principles to guide how we collaborate, lead, and support one another.

Audit quality underpins public trust in the nonprofit sector.In The CPA Journal, David M. Rottkamp, Partner and Nonprofi...
05/29/2026

Audit quality underpins public trust in the nonprofit sector.

In The CPA Journal, David M. Rottkamp, Partner and Nonprofit Practice Leader, examines the auditor’s role as a steward of the mission and a safeguard of accountability and explains why people, processes, and environment are critical to achieving audit quality.

NYCPA members can read the article here: https://www.nysscpa.org/login/login-premium-content .d6iz1KRN.dpbs

For first-time fund managers, K‑1s often create confusion. Guaranteed payments, self-employment tax, and timing gaps bet...
05/29/2026

For first-time fund managers, K‑1s often create confusion. Guaranteed payments, self-employment tax, and timing gaps between taxable income and cash flow are common challenges.

In our latest article, Grassi’s Financial Services team explains why these issues arise and how early planning can help reduce surprises, avoid penalties, and protect personal cash flow: https://www.grassiadvisors.com/blog/why-k-1s-cause-confusion-for-emerging-managers-and-how-early-planning-can-help/?utm_campaign=Social26&utm_source=Facebook&utm_medium=Social

As Asian American, Native Hawaiian and Pacific Islander (AANHPI) Heritage Month comes to a close, we reflect on the valu...
05/27/2026

As Asian American, Native Hawaiian and Pacific Islander (AANHPI) Heritage Month comes to a close, we reflect on the values and perspectives that shape how we lead, collaborate, and contribute.

Jackie Honeycutt, International Tax Director, shares how respect for others has influenced her approach to building strong relationships and why creating space for different voices leads to better ideas and stronger teams.

Swipe to learn more.

For emerging managers starting a fund, entity structure is one of the first decisions and one of the most consequential ...
05/27/2026

For emerging managers starting a fund, entity structure is one of the first decisions and one of the most consequential for tax exposure.

In Uncorrelated Magazine, Grassi’s Financial Services Partner, Toni Mazzacca, breaks down a recent Fifth Circuit ruling and its implications for limited partnership structures and self-employment tax on fund income.

Read the full article here: https://issuu.com/uncorrelated/docs/uncorrelated_magazine_-_april_2026/83

Congratulations to Louis Grassi, CEO & Founder of Grassi, on being named an Executive Circle Honoree by Long Island Busi...
05/26/2026

Congratulations to Louis Grassi, CEO & Founder of Grassi, on being named an Executive Circle Honoree by Long Island Business News.

Selected among leading executives for his leadership, vision, and commitment to business performance and community impact, Lou has guided Grassi through more than 45 years of industry change, building a lasting impact on both the firm and the broader business community.

We are proud to celebrate this well-deserved honor. Read more on page 16: https://libn-ny.newsmemory.com/?special=Executive+Circle+Awards+2026

Address

360 Madison Avenue, 7th Floor
New York, NY
10017

Opening Hours

Monday 9am - 5:30pm
Tuesday 9am - 5:30pm
Wednesday 9am - 5:30pm
Thursday 9am - 5:30pm
Friday 9am - 5:30pm

Website

https://www.linkedin.com/company/grassiadvisors

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