You *can* escape. You just need to learn how.
You can start by getting a job and having a bank account that's just your own. He says he doesn't want you working because it's to his advantage from a tax perspective. It's actually more than that. It allows him to keep you dependent. It allows him to keep a power imbalance in play where he is the "adult" in the relationship and you are the "child" - that's clear from the way he expects certain behaviour of you and throws a hissy fit when you are disobedient or 'disloyal' in his estimation.
Take courses. Widen your circle of friends. Become involved in your community as a volunteer. There are lots of options. But whatever you do, do not allow him (and his JW relatives and friends) to isolate you by compelling you to associate with only JWs. Isolation is their most useful tool - it creates a situation whereby their behaviour becomes "normal" when it isn't - you become accustomed to it and accept it. If you keep a broad range of friendships, you'll have someone there who can tell you "Hey Kari, that's messed up! Don't let them do that to you!"
Take small steps toward growing independence - he doesn't have to like you having a job. He has to accept your decision to work or go to school or whatever, and the tax implications that go with it. Tell him you think it will be good for your self esteem, or that you're becoming bored, or that you feel it's important for you to take care of your own expenses. What if he decides to run off with someone else? You'll need to have the skills to support yourself, because he sounds like the kind of guy who will try to weasel out of spousal support payments (do you have a pre-nup agreement?) Worst case scenario, what if he were to die suddenly? Where would that leave you financially? It's important for you to have marketable skills so you'll be able to be self-sufficient in the event you become single again. What about starting a small business from home - do you have talents like cooking or baking or making jewelry that you could sell? There are tax advantages to being self employed, perhaps that's angle he hasn't considered.