This document discusses how to calculate the true costs and returns of nurture marketing programs for SaaS companies. It outlines common nurture campaigns, associated fixed and variable costs, and how to forecast returns. It recommends separating costs, choosing an attribution model to fairly assign revenue from multiple touchpoints, and calculating the break even point for customers needed to cover program costs based on average customer lifetime value. The goal is for nurture programs to break even or provide a positive return on investment.