• OS Group CPA's & Business Advisors

    • Accountants
    183 Rockingham Road 3 West
    Windham, NH 03087
    (603) 329-6408
    (603) 329-6409 (fax)
    8 AM to 5 PM
    • About

      We are a 15 person CPA firm in Hampstead established to handle all business issues. We are trusted advisors for companies, small and large from Boston to Concord, NH. We represent clients in foreign transactions, ownership interests, and offshore assets.
      We also specialize in assisting in wealth management for business owners and families.

    • Whom to Contact

    • Directions

      We are located at the intersections of Route 111 and 121 in Hampstead.

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