We deliver highly personalized and professional services. We make every effort to enhance client profitability and their personal net worth. We continuously invest in our employees and technology to remain on the cutting edge of an ever-changing business world. We sincerely value the opportunity to share our wealth of knowledge with those who seek it. Put simply, "The difference is... we care."
Sheehan & Company, CPA, PC helps clients solve difficult financial, tax and audit problems and increase profitability by working as their Accounting partner in all financial matters through a long-term relationship.

Sheehan & Co. has the reputation in the NY metropolitan area for delivering superior tailored professional services with Manhattan-level expertise at reasonable, Long Island prices.

Our focus is solely on the measurable, continuous success of our clients.

We retain clients because of exceptional partner involvement, timely service, and operational excellence driven by old fashioned core values of integrity, quality, professionalism and proactive involvement in our clients’ lives and businesses.

Sheehan & Co. culture is described by our employees as family-oriented and focused as much on the development of the professional as we are on the developmental success of the client. Leadership is every employee’s responsibility and we expect our people to be leaders in the profession and the community.

We care at the heart about the personal relationships we form with each client and how they interact with their advisors to receive expert industry specific guidance in solving problems and increasing profitability. We believe the “client experience” matters.

Shared Values
Actions & Behaviors To Support

  • Community

    Through our three strategic locations, we service clients worldwide. We realize the importance of giving to our communities locally, state-wide, nationally and globally. As a firm we sponsor a variety of non-profit initiatives, serve in professional organizations and encourage 3-fold participation in community service activities (time, talent and treasure).
  • Reliability / Professionalism

    Delivering on-time, high quality work and consistently fulfilling commitments and are table stake standards. By being proactive and regularly communicating we seek to anticipate our clients' needs, staying a step ahead.
  • Accuracy / Quality Work

    We have never missed nor failed a stringent review by independent peers since the inception of the peer review process. Attention to detail and conscientiousness are hard-wired into our talent and reinforced with our training.
  • Family

    Family is a very important part of our culture and we encourage all employees and partners to find a time and energy balance between family and career.
  • Trust / Integrity

    Since 1955, our practice has been built on trust and integrity. We instill these values in our professional staff through rigorous training, continuing professional education programs and partner modeling of the behaviors we expect.
  • Training / Growth

    We invest significant time and money in training all employees in their jobs and providing professional staff with clear and precise career guidance to further their progress and success within the firm, their community and in life.
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Sheehan & Company is a medium-size Certified Public Accounting firm, offering the same state-of-the-art services traditionally found in larger, so-called "national" accounting firms. While we have evolved to keep pace with the rapid transformation of business, it is our dedication to personalized client relationships that has ensured our success, year after year.

With over 50 employees, we are well-equipped to service most mid-sized entrepreneurial companies. From our two corporate locations on Long Island, New York, we service a diverse roster of national and international clients.
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Founded in 1955, Sheehan & Company is a medium sized Certified Public Accounting and Consulting firm. Through steady growth and commitment to client success, we have become a well-known firm in the New York Metropolitan area.

Today, Sheehan & Company is one of Long Island's largest and most respected accounting firms. The firm's two New York locations, with their solid technological infrastructure, have provided domestic and international clients timely, professional services for more than six decades.

Our profession is rapidly changing to accommodate an ever-changing global business and economic marketplace. Sheehan & Company has evolved into a multidisciplinary practice and remains on the cutting edge of technology. Through the professional development of our partners and staff, along with strategic alliances formed with other highly qualified business professionals, Sheehan & Company offers a host of financial services, many of which have traditionally been found only at larger, national firms. Our mission, however, remains bring high quality, objective, personalized professional services to our clients.
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Sheehan Financial Advisors, LLC is a personal financial planning and registered investment advisory firm with the goal of providing personalized, objective and expert financial advice and services which larger firms are unable to successfully deliver.

Since the practice of personal financial planning is an ongoing process, your personal advisor will monitor your plan regularly to assure your planning goals and objectives are being achieved. Our planners take a proactive approach in providing a clearly written plan, based on a comprehensive personal interview, which will outline our recommendations to successfully attaining your financial goals.

We provide creative solutions to your business succession, retirement and estate planning concerns as well as strategic income tax planning advice to optimize your overall tax position. In addition, we offer fee-based asset management services, and insurance counseling.
We are an independent member of the BDO Alliance USA, a nationwide association of independently owned local and regional accounting, consulting and service firms with similar client service goals. The BDO Alliance USA presents an opportunity for firms to expand services to clients without jeopardizing our existing relationships or our autonomy by accessing the resources of BDO USA, LLP and other Alliance members. The BDO Alliance USA was developed to provide Member firms with an alternative strategy for gaining competitive advantage in the face of a changing business landscape. The Alliance represents an opportunity for BDO to enhance relationships with reputable firms that share a mutual business understanding. The BDO Alliance USA is a subsidiary of BDO USA, LLP, a Delaware limited liability partnership.
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