Sorry but if your US LLC has only foreign income, and does not conduct business with mainland UAE how can this be subject to CT
"Foreign income" means different things to different people but in most circumstances if I do some business then the income is local to where I do the business, regardless of where my company is registered or where the customers are.
If a business has its workers in the UAE, or the people who exercise management functions are in the UAE or the people who conclude contracts are in the UAE then that business has a Permanent Establishment in the UAE. This permanent establishment is a UAE business; is it exempt from mainland CT?
If you have shares in an offshore business then OK, there's no CFC rule as far as I know. If you are not running the business from UAE (management, entering into contracts, working, etc.) then you can receive "foreign income" from it untaxed because you're not doing the business in the UAE.
Or you can use a FZ which covers you to run the business with tax exemption in UAE.
Also the US LLC as a disregarded entity is a transparent entity and from a taxation standpoint, the taxation is on the member of the LLC which if it is a person is personal income taxation.
If the natural person living in the UAE is conducting business from UAE mainland, then (s)he can be subject to CT above AED 375,000. The US LLC's tax transparency avoids US taxation in many cases but it doesn't protect you from personal income tax where you live, or from running a Permanent Establishment outside the US.
@hireblade89 I'm trying to see your angle but I already lived in Thailand. Permanent Establishment has a similar meaning there. Now I'm in Georgia, again similar (and people do get in trouble here for interpreting "foreign source" income incorrectly). Also being a natural person doesn't exclude you from business taxes, else we can all just not register a company and trade tax-free.
You talk about enforcement and I agree with you. It seems unlikely that the UAE tax authorities are going to chase you for for running a small business in the USA while living in UAE. Same in Thailand, immigration and Revenue Department officials released a bunch of freelancers in Chiang Mai and said they didn't need to pay the tax. But this is just being nice, if they felt differently another day then the law would not protect them.
There are plenty of places to go for lack of enforcement (does anyone pay in Greece?
). The advantage of FZ is that it is written and intended to apply to running a business from UAE, which gives a sense of security rather than running an illegal tax evasion scheme and relying purely on lack of enforcement.