This document outlines 7 deadly sins to avoid when creating a dental marketing budget. The sins include not having a budget at all, reducing the budget when business picks up, waiting until business is slow to allocate a budget, having a budget but not funding it fully, having a budget but not allocating it properly, having a budget but not calculating return on investment, and letting others dictate the budget. It emphasizes that marketing should have consistent long-term funding and provides a formula for calculating an appropriate budget range as 5% of previous revenues to 5% of goal revenues.