Something closer to 50/50 is what Paul Graham always advise for later co-founders. Forget the past, imagine how both of you will work equally hard from now on.

Something closer to 50/50 is what Paul Graham always advise for later co-founders. Forget the past, imagine how both of you will work equally hard from now on. But remember that he is talking about startups that aim high. Maybe a billion dollar company, at least worth tens of millions. If this is also your ambition, to get your company from bootstrapped regular income to a $100 million dollar company, then go for a 60/40 deal (I am not convinced 50/50 is really desirable). But remember to have a good lawyer and take all precautions about vesting and if this person it really the right one. But if you aim at a good, healthy, profitable small company; I would just hire someone. Even if it is another more junior person.