Hmm an offer of 5%-10% when they have nothing with no salary is exceedingly low. Especially since they only an idea…. If you join, you’ll be working together fo

Hmm an offer of 5%-10% when they have nothing with no salary is exceedingly low. Especially since they only an idea…. If you join, you’ll be working together for the next 3-5 years to get this off the ground and you might end up resenting such a small amount of equity. Either take a small equity stake (5-10%) and a below market salary. It sounds like you are happy with no salary (I guess they are too), in that case I think 25%-33% would be more reasonable. If you and the brother go with 30% each, the idea guy would get 40% so 33% more than you. If you both go 25%, then he would get 50% so double what you guys have… With regards to him putting in cash, agree a pre-funding equity split and valuation then adjust it for the cash investment shares amongst the co-founders. I like what another poster said. If you earn $100k pa then that is roughly your market value and you ought to get equity equivalent in lieu of that. It’s a good way of making your case for 33%!! Ultimately only accept what you would feel happy with in 1-2 years time when the going gets tough and it’s hard and you feel down.