We are a small tech startup in very early stage we have a product partially built and had a beta going to validate our idea. Currently we are expanding our team. Also, we are changing the roles of a few key team members. We are really struggling to decide how to split the equity.

Our leading founder is taking a passive role now due to several unfortunate visa issues, and a new addition to the team is bringing high value proposition to the team. However, it is very hard to quantify value each member is bringing to the team and give it a number. How did you decide to split your company? How do you quantify each team member’s contribution even before we launch the product?

Please point me to a good resource where I can learn about how to go about finding answers to these questions.