“ At say a valuation of 20 x the average salary, I was thinking of 10% i.e. two years of an average salary. ” If you take that tack you’re going to end up with

“ At say a valuation of 20 x the average salary, I was thinking of 10% i.e. two years of an average salary. ” If you take that tack you’re going to end up with the short end of the stick. I realize you’re just asking for info but you should state this more positively. “My value to this company is $XXX as sales went from $A to $B and I can continue to grow it” Just that simple update changes the power dynamic and also puts you in a better mindset. Because I can guarantee you’ll crumble in negotiations when the buyer says “20 times a yearly salary! That’s far too high!” And you, as a software dev that probably undervalues your worth, will likely agree. Now you are on the back foot trying to justify your 15x, then 10x, then 5x, then some sort of rev share as they keep on chipping away.