The Small Business Administration, through its SCORE Chapters, provides free guidance and direct mentoring to small business owners in various areas including Marketing, Business plans, Financial Projections, Government Contracting, etc. These services are provided by qualified volunteers mentors.
Making your clients aware of this free of charge business mentoring, and later help them implement the results of the mentoring, they receive would add a positive impact of your role beyond the typical accounting, auditing and tax services, and may also, lead to more services your clients may request. Link to SCORE at National level, http://www.score.org/ At Chapter level (Example Southern New Jersey SCORE Chapter), http://www.score.254.org/