Re "move the requisite funds into a Thai bank so that you qualify for a 12 month extension" ... actually, he has to move the funds into a Thai bak before he can apply for the O-visa.
Try reading what I wrote and stop lecturing me about basic concepts that I fully understand. I never suggested that he could register a business in his name. I said that SHE could register a business in HER name and then EMPLOY HIM... with a work permit. No Thai employee quota is required.
Re: "if her husband wants to be active in the business, he needs a work permit, hence the minimum thai staff" ... not true. He can be active in the business without any Thai staff ... if it is not a corporation.
I don't know why you brought the Amity treaty into this.
Read her post and replies. She was under the misapprehension that you "have to open a company" (her words).
Kool Breeze and I had already moved on to discussing how her husband can get a work permit on a marriage visa ... this avoiding the need to set up a company.
There is no capital requirement - that is for companies. There is also regulation regarding minimum salary, but in practice they want to see a minimum of 40K per month.
Yes, you can legally work in Thailand as a freelancer if you work under a BOI umbrella organization like IGLU. They invoice your clients for you and handle income tax requirements. You'll need a B-visa. Talk to them about it first.
Also, if you only work online and do not have any Thai customers, that would be illegal but it doesn't usually have any repercussions.