Work it out this way: founder's round is the first round. That's before any cash goes in. Who is going to be quitting their job is usually the best indicator. I

Work it out this way: founder's round is the first round. That's before any cash goes in. Who is going to be quitting their job is usually the best indicator. If everyone is quitting their job, and everyone has technical skills to offer, and everyone is 100% focused then presumably it's a 33/33/33 split. After that has been done, money goes in either as a loan or for equity at a price agreed by the company. So if a founder put in $100,000 for 10% of the company, all the founder's round equity would be diluted (33*0.9=29.7%).