Outsource or "Co" Source with Barbara Prashner, CPA. Co-sourcing is about regular hands-on approach to your individual or business tax compliance, planning and special tax and financial projects. Enjoy the value added by an experienced professional familiar with your business. Family groups, closely-held busineses and middle-market companies can benefit from this strategy. Essentially Barbara becomes part of your team helping you to design and implement essential tax, financial and planning aspects of your business. Building a corporate tax department? Need a tax director either interim or on a part-time basis: Barbara Prashner becomes your tax director, bringing experience and knowledge to your company. She will work with your existing accounting and tax staff leveraging your resources.