David Skok has noted that there is a problem with using this formula, as you may have several expensive people in the team that should scale to handle a larger number of customers as you grow. In this case, your CAC will be too high. David suggested making�a very simple adjustment to the Sales & Marketing expenses to take only a portion of those salaries and expenses in the early days. This will provide�a better indication of how CAC will look in the future when you are at scale.
More SaaS + Software Stats
The median average contract length is 1.3 years and the average billing term is seven months in advance in 2016. Comparable to 2015, with average contract length shortening from 1.5 to 1.3 years and average billing period increasing by one month from 2015 to 7 months