A. Grant Mangum & Company, Inc. is a full-service accounting, tax, and practice management consulting firm that has been serving clients from Durham for more than 50 years. It provides tax planning, tax preparation, IRS problem resolution, and estate planning services. It also offers business services such as small business accounting, strategic business planning, succession planning, payroll solutions, and new business formation services. A. Grant Mangum & Company, Inc., is a member of the American Institute of Certified Public Accountants.