Part of why he ruins them is because I think deep down he doesn’t want me to work and have a way to pay for things, but if it wasn’t for me, we would be living out on the streets! Seriously!
OK, here is my read: Your husband probably doesn't want you to work because (#1) he wants you available to serve him and shower him with attention. When you work, he might feel you are "abandoning" him. But even when you are at home, he'll probably ignore you most of the time . . . he just wants you to be available, on call. Does that sound about right? I think that's reflects the the "abandonment" fears of BPD, because deep down he's really insecure. He feels like he's competing with your job for your attention.
But here's my other guess: (#2) he doesn't like the fact that you're earning money, because you are upstaging him. He probably thinks the man should be the provider, and so your employment might feel emasculating to him. Again, this hits the emotional insecurity side of BPD.
A related issue (#3) is when you work and earn money, you are basically "reminding" your husband that he's probably not working hard enough himself. In a bizarre way, when you work, you're making him feel bad, just by comparison. He feels bad enough as it is, and you are "rubbing it in" when you work.
Additionally, (#4) he wants your money, and for you to pay the bills, but he doesn't want to be reminded of everything you pay for, because it makes him feel inferior. Besides, anything you pay for doesn't "count" in his household accounting. I bet he thinks he pays for most "everything," because he's basically in denial about what you pay for, and he really only values what he pays for. The only cash outflow he appreciates is what comes out of his own pocket. Let me guess, does he go on an on about paying a small bill, while ignoring/"discounting" all the other bills you covered in the last month/year? Does that sound about right?
Finally (#5) he's uber controlling, probably because he feels a lack of control over his own life. He wants to tell you not to work, not to hire a babysitter, and he wants to come and go as he pleases--but not reciprocate. He wants to decide and barely gives you input. Let me guess, he has all sorts of rules for you which don't apply for him. He can do anything he wants, but he expects you to do everything he wants too. Does that sound about right?
All this creates a huge cognitive dissonance--him wanting to have more money, but not acknowledge where it's coming from, and refusing to pay bills in the hopes that they'll just disappear (because you pay for them yourself), all in a vain attempt to maintain a delusion that he's in control and doing all the work. Meanwhile you're exhausted trying to juggle finances, hours and kids' schedules, plus your partner's unpredictable emotional outbursts and unreliability. Maybe he'll be reasonable/responsible sometimes, but more often than not, you feel used and abused. Yes?
If the foregoing sounds about right, I'm not sure what the solution really is. On the one hand, I think you might just accept that his thinking patterns are highly emotional and governed by insecurities. I don't know how to make someone feel more secure except to use constant praise and to try to manage his "energy." This might be off-base, but it sounds to me like your husband really needs a job where he's actually going to a workplace and interacting with other people in person, which would take some of the focus off you and what you're doing, as well as bolster his confidence and identity. If he can "work from home" while watching kids or changing up locations, my guess is that he's not working very hard (I could be wrong, that's just my read based on the short post you wrote). Based on my experience with BPD, where volatile emotions get in the way of maintaining focus, reading social cues and staying on task, it seems to me that working from home would be a set-up that is simply too challenging. My guess is that a "regular" job with stable hours, a predictable location and a lack of distractions would actually decrease stress.
Just my two cents.