MGO (Macias Gini & O'Connell LLP)

Assurance | Tax | Consulting | Private Client Services

Certified public accountant in Melville, NY (show on map)

MGO provides audit and assurance services for public companies, private businesses, government agencies, and nonprofits.

Call (516) 409-5000

Navigate to Visit website

About

As a global team of over 500 financial service professionals, MGO delivers assurance, tax, consulting, outsourcing, and private client services tailored to clients' unique needs, spanning industries such as automotive, biotech, cannabis, entertainment, financial services, green technology, hospitality, manufacturing, nonprofit, professional services, real estate, restaurant, state and local government, technology, and tribal nations/gaming. The firm emphasizes human care, connection, and trust to provide holistic financial guidance for long-term success.

Deep industry knowledge and decades of experience

Human care and connection at the center of everything

Comprehensive suite of audit, tax, consulting, and private client services

Specialized expertise in IPO preparation, government audit, and employee benefit plan audits

Customized solutions tailored to each client’s unique needs

Strong leadership team with national and industry-specific practice leaders

Services

Audit and Assurance

MGO provides audit and assurance services for public companies, private businesses, government agencies, and nonprofits, combining deep industry knowledge and decades of experience.

Public Company Audit and Assurance Private Company Audit Services Government Audit Employee Benefit Plan Audits

Public Company Services

Financial services that drive market and investor confidence while providing insight into the strength of controls, operational performance, and financial health.

Financial Statement Audit IPO Services Technical Accounting Assistance SOX/SOC Compliance ESG Audit

Tax Services

MGO offers comprehensive tax services including enterprise business tax, closely held companies, international tax, private client services, state and local tax, tax advocacy and resolution, and specialized tax credits and incentives.

Enterprise Business Tax Closely Held Companies International Tax Private Client Services State and Local Tax Tax Advocacy and Resolution Tax Credits and Incentives

Consulting

MGO provides consulting services including client accounting solutions, cybersecurity, fraud and litigation support, internal audit, risk, and compliance, M&A sell-side advisory, management consulting, margin growth optimization, transaction advisory, and technical accounting.

Client Accounting Solutions Cybersecurity Fraud and Litigation Support Internal Audit, Risk, and Compliance M&A Sell-Side Advisory Management Consulting Margin Growth Optimization Transaction Advisory Technical Accounting

Private Client Services

MGO offers personalized financial services for high-net-worth individuals, entrepreneurs, and private sector leaders, covering tax, assurance, advisory, and private client needs.

Tax Planning and Compliance Wealth Management Estate Planning Family Office Support

Managed Services

MGO delivers managed services including client engagement portals for secure document sharing and online collaboration, as well as fast, secure online payments via credit card or ACH/bank transfer.

Client Engagement Portal Secure Document Sharing Online Collaboration Secure Online Payments

Credentials & Certifications

CPA

Since Multiple members listed as CPA

MBA

Since Cesar Reynoso, CPA, MBA

Frequently Asked Questions

What is the difference between a financial statement audit and a review? +

A financial statement audit provides an independent opinion on whether the financial statements are presented fairly, in all material respects, in accordance with applicable financial reporting frameworks. A review provides limited assurance that nothing has come to the attention of the reviewer that causes them to believe that the financial statements are in accordance with the applicable framework, but does not involve testing transactions.

What are the key benefits of an IPO audit? +

An IPO audit ensures that the financial statements are free from material misstatement, provides an independent opinion required by the SEC, and helps investors gain confidence in the company’s financial reporting and governance.

How does MGO support clients with R&D tax credits? +

MGO assists clients in identifying eligible R&D activities, preparing and filing R&D tax credit claims, and ensuring compliance with IRS guidelines to maximize credit benefits.

What industries does MGO serve? +

MGO serves a wide range of industries including automotive, apparel, biotech and life sciences, cannabis, entertainment, sports, and media, financial services, green technology, hospitality, manufacturing and distribution, nonprofit organizations, private client services, professional services, real estate, restaurant and food service, state and local government, technology, tribal nations and gaming, and vineyards and wineries.

What is the MGO Way? +

The MGO Way consists of 26 fundamentals that guide how MGO interacts with clients and each other, emphasizing human care, connection, and trust to provide holistic financial guidance and support for long-term success.

How does MGO help clients with cybersecurity? +

MGO offers cybersecurity consulting services that assess risks, implement protective measures, and provide ongoing monitoring to safeguard clients’ digital assets and comply with regulatory requirements.