Skip to content
Michael Porter
Written by
Michael Porter
Last updated
July 13, 2026

Tracking 7 Core KPIs for Your Online Custom Products Store


Frequently Asked Questions

The Contribution Margin (CM) is defintely the most critical, as it shows if each sale covers variable costs (175% in 2026) You need a high CM (825%) to offset fixed costs, which start around $974 monthly plus wages

Michael Porter
About the author

Michael Porter

Entrepreneurship Researcher

Michael Porter is an entrepreneurship researcher at Financial Models Lab who helps founders opening a new small business turn big questions into clear planning steps. He focuses on expense and revenue planning for the first year, keeping attention on useful numbers and realistic expectations. His work gives business plan writers practical guidance without sugarcoating the challenges ahead.