I use Gusto. I have out of state employees for the first time this year. Gusto is super affordable and they take care of all the out of state taxes and filing all the paperwork with that state.

10000% you should be talking to a lawyer (or several lawyers) right now and not Reddit.

If he doesn’t want to make you an offer, what’s preventing you from selling your half of the business to someone else? If that’s possible, take a look around for a better offer.

That alone might bring him to make a reasonable offer… he probably won’t want to risk potentially having to share his business with someone he doesn’t know, who could potentially be a wild card.

October has been the best month in my companies history (started May 2015).