Originally Posted by j.man
I mean there's about 1000 miles of distance between the two.
I would never agree to any deal that didn't involve either of us having our own accounts to play or contribute with at our own leisure. Still, we combine for costs we're both responsible for.
What I will say, and this sounds like what your partner has planned, is we do have a brokerage account that I solely handle and which she contributes extra funds for me to invest when she can and wants to. The problem with your situation is it sounds like you two aren't married, which could involve what would be considered taxable gifts either between him transferring his assets into a joint tenancy or you two eventually not working out and having to cash out between each other. I'm not intimately familiar with that aspect, and I'm sure the accountant in this thread could correct me on everything, but do know the tax is rarely ever cheap, and there are a whole lot of other implications with a joint brokerage account than there are with a joint bank account, especially those non-spousal. I also think there are hurdles that hinder effective liquidity if a decision needs to be made straight away in a non-spousal joint tenancy. That's not to say I'd take him up on it in your shoes, but that there are reasons it'd solely be in his name were you to go down the road of investing the extra money as a means to save for a home.
There are ways to contractually work around issues, but I wouldn't mess with de facto joint assets. I'd get married first, and that's not because I'm a romantic. As to the more general question, "control" tends to operate on a sliding scale, but access to joint funds and assets should be equal, with the more financially responsible party trusting their partner pretty much not to **** anything up.