The market for tax consulting and auditing services is undergoing a fundamental transformation process. Those who embrace this development will be able to reap significant benefits. It will become more important than ever to develop an appropriate competitive strategy along with a suitable marketing strategy. The internet, with its extensive communication possibilities, is at the center of all marketing activities. The range includes everything from marketing-oriented websites to email marketing and social media marketing. Supportive marketing tools are presented through examples and numerous illustrations. A concluding case study illustrates the authors' content and theses in a practical manner. An indispensable guide for successful business development in tax consulting and auditing.