I know I'll get flamed for this but I don't get it when couples only have joint finances and nothing separate.
Me and DH have a joint account to cover joint expenses (house, cars childcare) etc. We each put same in each month as earn similar.
We also have joint saving pots for certain things where we put certain amount into eg holiday, emergency fund, kids stuff.
That's it. Anything left stays in our separate personal accounts for whatever we please.
This seems like a logical way to do it. All joint obligations are sorted together but we still retain independence with what's left.
A friend of mine only does joint. She only works part time so a different situation to us but husband monitors every penny in and out. If she buys something he doesn't agree with or that she didn't clear with him first, he brings it up.
I told her my arrangement and she just said 'yes well we like to manage all the money together, as a team'. Right ok, sounds more like financial abuse than team work but hey ho