Nonprofit organizations are subject to a high level of fiduciary duty and more stringent reporting and compliance requirements than most for profit companies. Our firm specializes in the non-profit “industry” and we serve many non-profit organizations in Southern New Hampshire and Vermont.

Contact us for help with the following:

  • Financial statement audits, reviews and compilations
  • Form 990 preparation
  • Form 990-T preparation
  • State reporting
  • Internal control evaluation and recommendations
  • Consulting


Big Brothers Big Sisters of New Hampshire

Big Brothers Big Sisters of New Hampshire is happy to work with Oster & Wheeler, PC for our yearly independent financial audit as they are helpful through the process and answering any questions that we have.  Particularly, where my expertise isn’t in finance and accounting, they are understanding and supportive with making sure I understand all the moving parts of an audit and that the agency is running in compliance and at optimal financial performance.

Stacy W. Kramer, MSW

CEO, donor & former Big Sister

D’Alessio & Associates Inc

Our firm’s bookkeeping clients regularly engage Oster & Wheeler for their audit and tax compliance needs. On behalf of our clients, we have worked extensively with Oster & Wheeler for over 10 years. Their approach to audits and their communications ensure we are working together seamlessly. Their entire team works diligently to deliver quality audit & tax work on a timely basis. Oster & Wheeler have a diversity of knowledge that, when coupled with their much appreciated patience, brings true value to their clients. It has been our pleasure to work with their firm.

Stephen D’Alessio

D’Alessio & Associates Inc

Kurn Hattin Homes for Children

Oster and Wheeler have been Kurn Hattin’s auditors for several years. We have been pleased with the work they do, their knowledge in not for profit accounting, the approach they take with their analysis, and their communications with staff and trustees. They show great flexibility with scheduling that meet deadlines crucial to the client. I recommend Oster and Wheeler for any small to intermediate size not for profit organization.

Stephen R. Fitch

Financial Manager
Kurn Hattin Homes for Children

Contact Us

Visit Us

86 West St,
PO Box 623,
Keene, NH 03431

Get In Touch

Phone: 603-352-4500
Fax: 603-352-8558


Oster & Wheeler, PC – Certified Public Accountants    86 West Street   PO Box 623    Keene, NH 03431   (phone) 603.352.4500   (fax) 603.352.8558